Comparison of open posterior versus transperitoneal laparoscopic adrenalectomy

Robot-assisted vs laparoscopic lateral transabdominal adrenalectomy: a propensity score matching analysis

BACKGROUND

Laparoscopic adrenalectomy (LA) is the gold standard treatment for adrenal lesions. Robot-assisted adrenalectomy (RAA) is a safe approach, associated with higher costs in absence of clear-cut benefits. Several series reported some advantages of RAA over LA in challenging cases, but definitive conclusions are lacking. We evaluated the cost effectiveness and outcomes of robotic (R-LTA) and laparoscopic (L-LTA) approach for lateral transabdominal adrenalectomy in a high-volume center.

METHODS

Among 356 minimally invasive adrenalectomies (January 2012-August 2021), 286 were performed with a lateral transabdominal approach: 191 L-LTA and 95 R-LTA. The R-LTA and L-LTA patients were matched for lesion side and size, hormone secretion, and BMI with propensity score matching (PSM) analysis. Postoperative complications, operative time (OT), postoperative stay (POS), and costs were compared.

RESULTS

PSM analysis identified 184 patients, 92 in R-LTA and 92 in L-LTA group. The two groups were well matched. The median lesion size was 4 cm in both groups (p = 0.533). Hormonal hypersecretion was detected in 55 and 54 patients of R-LTA and L-LTA group, respectively (p = 1). Median OT was significantly longer in R-LTA group (90.0 vs 65.0 min) (p < 0.001). No conversion was registered. Median POS was similar (4.0 vs 3.0 days in the R-LTA and L-LTA) (p = 0.467). No difference in postoperative complications was found (p = 1). The cost margin analysis showed a positive income for both procedures (3137 vs 3968 € for R-LTA and L-LTA). In the multiple logistic regression analysis, independent risk factors for postoperative complications were hypercortisolism (OR = 3.926, p = 0.049) and OT > 75 min (OR = 8.177, p = 0.048).

CONCLUSIONS

The postoperative outcomes of R-LTA and L-TLA were similar in our experience. Despite the higher cost, RAA appears to be cost effective and economically sustainable in a high-volume center (60 adrenalectomies/year), especially if performed in challenging cases, including patients with large (> 6 cm) and/or functioning tumors.

Comparison of the effectiveness and safety of robotic-assisted and laparoscopic in adrenalectomy: A systematic review and meta-analysis

OBJECTIVE

To compare the safety and effectiveness of robot-assisted adrenalectomy (RA) and laparoscopic adrenalectomy (LA).

METHODS

We performed a systematic review and cumulative meta-analysis of the primary outcomes of interest according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) and AMSTAR (Assessing the Methodological Quality of Systematic Reviews) Guidelines. Five databases, including Medline, PubMed, Cochrane Library, Scopus, and Web of Science, were systematically searched. The search timeframe was set from the creation of the database to December 2021.

RESULTS

There were 26 studies including 2985 patients. Our study found that the robotic technique was superior to conventional laparoscopy for estimated blood loss (WMD = -18.25, 95% CI [-27.85, -8.65], P < 0.01), length of stay (WMD = -0.45, 95% CI [-0.57, -0.33], P < 0.01), and conversion to open (OR = 0.31, 95% CI [0.12, 0.78], P = 0.01), while complications and readmissions were comparable. Interestingly, there was no difference in operative time between the two surgical modalities, but subgroup analysis found that the retroperitoneal route robotic technique took longer (WMD = 14.64, 95% CI [0.04, 29.24], P < 0.05), whereas the study of the mixed surgical modality (RA versus LA with mixed transabdominal and retroperitoneal surgical routes) found that the robot required less time (WMD = -12.29, 95% CI [-22.86, -1.72], P < 0.05). For pheochromocytoma, RA was superior to LA in terms of length of stay (WMD = -0.49, 95% CI [-0.83, -0.15], P < 0.01), with no difference in other indicators.

CONCLUSION

robotic-assisted adrenalectomy is a superior technique to conventional laparoscopy in managing adrenal tumors, even in the case of a specific adrenal tumor - pheochromocytoma.

Factors associated with postoperative complications and costs for adrenalectomy in benign adrenal disorders

BACKGROUND

The incidence of adrenal incidentaloma has been increasing, and indications of and approaches to adrenalectomy are diverse. Drivers of complications and costs are not well identified.

METHODS

The 2016 National Inpatient Sample data were used to identify patients who underwent adrenalectomy for benign adrenal disorders, such as Cushing syndrome, primary hyperaldosteronism, pheochromocytoma, and other benign neoplasms defined using the 10th Revision of the International Classification of Diseases. The primary outcome was determining the factors associated with clinical outcomes, perioperative complications, and hospitalization costs.

RESULTS

Using weighted estimates of the national sample data, 5,140 patients were identified. The mean age was 55 years. The majority of adrenalectomies were performed laparoscopically (48.5%) followed by a robotic approach (32.7%). The postoperative complication rate was 7.6%. In adjusted multivariable analyses, independent risk factors for perioperative complications included Hispanic race (odds ratio, 2.5; P = .01), and perioperative comorbid heart failure (odds ratio, 6.3; P < .001) and respiratory failure (odds ratio, 9.9; P < .001). The mean cost was $18,122. Independent risk factors associated with decrease of cost were female sex and primary hyperaldosteronism; factors associated with increased cost were pheochromocytoma, intraoperative complications, perioperative underlying comorbid respiratory failure and heart failure, and postoperative complications (P < .001).

CONCLUSION

Among patients undergoing adrenalectomy for benign adrenal disorders, underlying comorbidities, including heart and respiratory failure, should be considered when recommending adrenalectomy, as these may increase the postoperative complication rates and hospitalization costs.

New predictive factors for prolonged operation time of laparoscopic posterior retroperitoneal adrenalectomy; retrospective cohort study

BACKGROUND

Laparoscopic adrenalectomy is a standard surgical procedure for benign adrenal diseases. Laparoscopic posterior retroperitoneal adrenalectomy (LPRA) has many benefits. However, it is associated with factors such as prolong operation time. The aim of the study was to determine the predictive factors associated with prolonged operation time in LPRA.

MATERIALS AND METHODS

This study retrospectively analyzed data from 284 patients who underwent LPRA between 2014 and 2019 at Asan Medical Center. Then, we analyzed the predictive factors prolonging operation time using multivariate logistic regression analysis and classified the differences according to the learning curve using cumulative sum analysis.

RESULTS

In multivariate logistic regression analysis, the following were determined as factors associated with prolonged operation time: male sex (OR, 2.540; 95% CI, 1.225-5.266), pheochromocytoma (OR, 3.669; 95% CI, 1.548-8.694), right site (OR, 2.499; 95% CI, 1.086-5.748), surgeon A (OR, 3.293; 95% CI, 1.522-7.122), depth of descended adrenal tumor location to kidney (OR, 3.793; 95% CI, 1.660-8.667), large periadrenal fat volume (OR, 2.366; 95% CI, 1.120-4.996), and posterior adiposity index (PAI) (OR, 2.171; 95% CI, 1.090-4.324) (all p < 0.05). However, in the period after the learning curve, periadrenal fat volume was not a significant predictor of surgery time prolongation.

CONCLUSION

This study demonstrates that depth of descended adrenal tumor location to kidney is a new and important independent predictive factor for prolonged operation time in LPRA. In addition, periadrenal fat volume is a predictor of surgery time prolongation for beginner surgeons before the learning curve.

How to handle oligometastatic disease in nonsmall cell lung cancer

Patients with nonsmall cell lung cancer and limited metastatic disease have been defined as oligometastatic if local ablative therapy of all lesions is amenable. Evidence from different clinical retrospective series suggests that this subgroup harbours better prognosis than other stage IV patients. However, most reports have included patients with inconsistent numbers of metastases in different locations treated by a variety of invasive and noninvasive therapies. As long as further results from randomised clinical trials are awaited, treatment decision follows an interdisciplinary debate in each individual case. Surgery and radiotherapy should capture a dominant role in the treatment course offering the option of a curative-intended local therapy in combination with a systemic therapy based on an interdisciplinary decision. This review summarises the current treatment standard in oligometastatic lung cancer with focus on an ablative therapy for both lung primary and distant metastases in prognostically favourable locations.

Safety and feasibility of reduced-port site surgery for robotic posterior retroperitoneal adrenalectomy

BACKGROUND

Minimally invasive surgery, such as laparoscopic adrenalectomy and robotic adrenalectomy, has become a treatment of choice for benign adrenal tumors. Efforts are ongoing to minimize the invasiveness of the procedure and to reduce the number of port sites. The primary endpoint of this study was the safety and feasibility of a reduced-port site technique for robotic posterior retroperitoneal adrenalectomy (RPRA).

METHODS

This study retrospectively analyzed 74 RPRAs performed by a single surgeon, including 30 conventional three-port site early-phase RPRAs, 30 three-port site late-phase RPRAs, and 14 reduced-port site RPRAs. Reduced-port site RRPA was defined as using two port sites: one for a multi-glove port and one for an additional side port. The clinicopathological features and surgical outcomes were compared in these three groups.

RESULTS

No major complications were observed following RPRA in the three groups of patients. Operation time, pain score, and hospital stay did not differ significantly among these three groups.

CONCLUSIONS

RPRA using a reduced-port site system was safe and feasible and may be a good alternative to conventional three-port site RPRA for benign adrenal tumors in certain situations.

International multicentre review of perioperative management and outcome for catecholamine-producing tumours

BACKGROUND

Surgery for catecholamine-producing tumours can be complicated by intraoperative and postoperative haemodynamic instability. Several perioperative management strategies have emerged but none has been evaluated in randomized trials. To assess this issue, contemporary perioperative management and outcome data from 21 centres were collected.

METHODS

Twenty-one centres contributed outcome data from patients who had surgery for phaeochromocytoma and paraganglioma between 2000 and 2017. The data included the number of patients with and without α-receptor blockade, surgical and anaesthetic techniques, complications and perioperative mortality.

RESULTS

Across all centres, data were reported on 1860 patients with phaeochromocytoma or paraganglioma, of whom 343 underwent surgery without α-receptor blockade. The majority of operations (78·9 per cent) were performed using minimally invasive techniques, including 16·1 per cent adrenal cortex-sparing procedures. The cardiovascular complication rate was 5·0 per cent overall: 5·9 per cent (90 of 1517) in patients with preoperative α-receptor blockade and 0·9 per cent (3 of 343) among patients without α-receptor blockade. The mortality rate was 0·5 per cent overall (9 of 1860): 0·5 per cent (8 of 517) in pretreated and 0·3 per cent (1 of 343) in non-pretreated patients.

CONCLUSION

There is substantial variability in the perioperative management of catecholamine-producing tumours, yet the overall complication rate is low. Further studies are needed to better define the optimal management approach, and reappraisal of international perioperative guidelines appears desirable.

Evolution of adrenal surgery in a tertiary referral centre

BACKGROUND

Laparoscopic transperitoneal and retroperitoneoscopic adrenalectomy have largely replaced open adrenal surgery, particularly in benign disease. Laparoscopic surgery results in less post-operative pain, fewer surgical site complications and reduced length of hospital stay. The aim of this retrospective study was to analyse the characteristics of patients and evolution of surgical technique in adrenal surgery at Cork University Hospital over a 12-year period.

METHODS

All cases of adrenalectomy between January 1st, 2007 and December 31st, 2018 were retrospectively reviewed. Patient demographics, diagnosis, surgical approach, length of hospital stay, histology and complications were evaluated. Comparisons were made between open, laparoscopic transperitoneal and retroperitoneoscopic adrenalectomy cases.

RESULTS

There were 57 adrenalectomies performed on 55 patients over the 12-year period. Twenty-six patients (46%) were male, and the mean age was 49 years (range 14-84 years). Twenty-two (39%) right-sided adrenalectomies were performed, 33 (57%) left sided and 2 (4%) patients underwent bilateral surgery. Seventeen adrenalectomies were performed using an open transperitoneal approach, 30 via a laparoscopic transperitoneal approach and 10 using the retroperitoneoscopic technique. Adenoma and pheochromocytoma were the most common indications for surgery (42% and 40%, respectively). Seven percent were performed for malignancy and 5% for other benign indications. The complication rate for open adrenalectomy was 18% versus 10% in laparoscopic transperitoneal adrenalectomy and 0% for retroperitoneoscopic adrenalectomy. Two patients (7%) undergoing laparoscopic transperitoneal surgery required conversion to an open procedure. There were no 30-day mortalities and no disease recurrence within the study time frame. The mean length of hospital stay was 7.6 days in the open group, 5.8 days for the laparoscopic transperitoneal group and 3 days for the retroperitoneoscopic group (p = 0.03).

CONCLUSIONS

Adrenalectomy is a safe procedure and in our setting was primarily performed for pheochromocytoma and non-functioning adenomas. Minimally invasive adrenalectomy has become the standard of care internationally and is associated with fewer complications, shorter hospital stay and a low conversion rate.

Comparing the efficacy and safety of laparoscopic and robotic adrenalectomy: a meta-analysis and trial sequential analysis

PURPOSE

A systematic literature review and a meta-analysis were designed and conducted, in order to provide an up-to-date comparison of the robotic (RA) and laparoscopic (LA) adrenalectomy in terms of perioperative efficacy and safety.

METHODS

The present meta-analysis was completed in accordance with the guidelines provided by the PRISMA study group and the Cochrane Handbook for Systematic Reviews of Interventions. The electronic scholar databases (Medline, Web of Science, Scopus) were screened. For the reduction of type I errors, a trial sequential analysis (TSA) was performed.

RESULTS

Overall, 21 studies and 2997 patients were included in this study. RA was associated with a significantly lower open conversion rate (OR: 1.79; 95%CI: 1.10, 2.92) and length of hospitalization (LOS WMD: 0.52; 95%CI: 0.2, 0.84). Marginal results regarding blood loss were recorded (WMD: 2.02; 95%CI: 0.0, 4.03). TSA could not validate the superiority of RA in open conversion rate and blood loss. LA and RA were similar in terms of operative duration (P = 0.18) and positive margin (P = 0.81), complications (P = 0.94) and mortality rate (P = 0.45).

CONCLUSIONS

Even though RA and LA were equivalent regarding perioperative safety, RA was associated with a favorable LOS.

Laparoscopic adrenalectomy

In the last three decades, endoscopic adrenalectomy has become the gold standard for the surgical treatment of most adrenal diseases. Gagner et al., first reported in 1992, the lateral trans-abdominal laparoscopic approach to adrenalectomy. Afterwards, several retrospective and comparative studies addressed the advantages of minimally invasive adrenalectomy specifically consistent in less postoperative pain, improved patients' satisfaction, shorter hospital stay and recovery time when compared to open adrenalectomy. The lateral transabdominal approach to the adrenals is currently one of the most widely used, since it allows an optimal comprehensive view of the adrenal region and surrounding structures, and provides and adequate working space. On the other hand, from a technical point of view, essential requirements for a successful laparoscopic adrenalectomy are an appropriate knowledge of retroperitoneal anatomy, a gentle tissue manipulation and a precise haemostasis technique in order to identify appropriately the structures of interest and avoid the troublesome 'oozing' that could complicate the surgical procedure.

Comparison of retroperitoneal laparoscopic versus open adrenalectomy for large pheochromocytoma: a single-center retrospective study

Background

It remains unclear whether retroperitoneal laparoscopic adrenalectomy (RLA) is safe and effective for the treatment of large pheochromocytoma (PHEO). This retrospective study aimed to identify the advantages and disadvantages of RLA compared to open adrenalectomy (OA).

Methods

This study included 147 patients who underwent RLA (n = 101) or OA (n = 46) for PHEO larger than 5 cm. Groups were balanced by propensity score matching (PSM) into 46 pairs. Perioperative variables and long-term follow-up results were compared between the two groups.

Results

After PSM, patients in the RLA group had a shorter operative time (218 vs. 245 min, P = 0.040), quicker bowel recovery (2 vs. 3 days, P = 0.046), and a shorter hospital stay (8 vs. 9 days, P = 0.010) compared to the OA group. The results of multiple linear regression analyses showed that the operative method (OA vs. RLA) had an influence on the above three postoperative variables (β = 31.84, P = 0.046; β = 0.76, P = 0.044; and β = 1.25, P = 0.025, respectively). There was no significant difference in the proportion of patients with improved blood pressure (82.61% vs. 69.57%, P = 0.143) between the two groups.

Conclusions

Both RLA and OA provide similar perioperative and long-term outcomes for the surgical management of large PHEO. RLA is an efficacious and safe surgical method for patients with PHEO larger than 5 cm in diameter.

Comparison of Robotic Posterior Retroperitoneal Adrenalectomy over Laparoscopic Posterior Retroperitoneal Adrenalectomy: A Single Tertiary Center Experience

BACKGROUND

The aim of this study is to compare the clinical outcomes of laparoscopic posterior retroperitoneal adrenalectomy (LPRA) and robotic posterior retroperitoneal adrenalectomy (RPRA) and determine the differences that could affect the outcomes.

METHODS

We retrospectively analyzed 230 adrenalectomy cases from 2014 to 2017. There were 169 LPRA and 61 RPRA cases, and their clinicopathological features and surgical outcomes were compared.

RESULTS

In LPRA, there was a positive relationship between operation time and male gender, early period of experience, adrenal tumor size, and pheochromocytoma. In RPRA, adrenal tumor size and pheochromocytoma were the factors affecting the operation time. When the adrenal tumor size was ≤5.5 cm, the operation time of LPRA was shorter than that of RPRA (p=0.001). When the tumor size was >5.5 cm, there was no significant difference in the operation times of LPRA and RPRA (p=0.102).

CONCLUSIONS

RPRA is a feasible and technically safe approach for benign adrenal diseases. The use of RPRA could benefit patients and provide comfort by overcoming the factors contributing to a longer operation time in the laparoscopic technique, such as male gender and high BMI.

Evaluation of Open and Minimally Invasive Adrenalectomy: A Systematic Review and Network Meta-analysis

BACKGROUND

Adrenalectomy can be performed via open and various minimally invasive approaches. The aim of this systematic review was to summarize the current evidence on surgical techniques of adrenalectomy.

METHODS

Systematic literature searches (MEDLINE, EMBASE, Web of Science, Cochrane Library) were conducted to identify randomized controlled trials (RCTs) and controlled clinical trials (CCTs) comparing at least two surgical procedures for adrenalectomy. Statistical analyses were performed, and meta-analyses were conducted. Furthermore, an indirect comparison of RCTs and a network meta-analysis of CCTs were carried out for each outcome.

RESULTS

Twenty-six trials (1710 patients) were included. Postoperative complication rates did not show differences for open and minimally invasive techniques. Operation time was significantly shorter for open adrenalectomy than for the robotic approach (p < 0.001). No differences were found between laparoscopic and robotic approaches. Network meta-analysis showed open adrenalectomy to be the fastest technique. Blood loss was significantly reduced in the robotic arm compared with open and laparoscopic adrenalectomy (p = 0.01). Length of hospital stay (LOS) was significantly lower after conventional laparoscopy than open adrenalectomy in CCTs (p < 0.001). Furthermore, both retroperitoneoscopic (p < 0.001) and robotic access (p < 0.001) led to another significant reduction of LOS compared with conventional laparoscopy. This difference was not consistent in RCTs. Network meta-analysis revealed the lowest LOS after retroperitoneoscopic adrenalectomy.

CONCLUSION

Minimally invasive adrenalectomy is safe and should be preferred over open adrenalectomy due to shorter LOS, lower blood loss, and equivalent complication rates. The retroperitoneoscopic access features the shortest LOS and operating time. Further high-quality RCTs are warranted, especially to compare the posterior retroperitoneoscopic and the transperitoneal robotic approach.

Adrenal surgery in England: better outcomes in high-volume practices

AIMS AND BACKGROUND

Adrenal surgery is performed by a variety of surgical specialities in differing environments and volumes. International data suggest that there is a correlation between adrenal surgery volume and outcomes but there are no UK data to support this or UK surgical guidelines. A multidisciplinary team representing the stakeholders in adrenal disease is preparing a national guidance on adrenal surgery. A review of the outcomes for adrenal surgery in England was performed to correlate outcomes with the volume of surgeon practice.

METHODS

Hospital Episode Statistics (HES) data for the National Health Service (NHS) in England in the tax year 2013-2014 were examined for adrenal surgery. Length of hospital stay and rate of postoperative readmission were assessed as surrogate quality markers and a comparison made between 'high-' and 'low-' volume surgeons.

RESULTS

A total of 795 adult adrenalectomies were performed by 222 different surgeons with a range of between 1 and 34 adrenalectomies performed per surgeon. Only thirty-six (16%) adrenal surgeons performed 6 or more adrenalectomies. A total of 186 surgeons (84%) performed a median of one adrenalectomy a year. Length of stay and readmission rate within thirty days of operation was 60% longer and 47% higher, respectively, when performed by low-volume surgeons.

CONCLUSION

The current provision of adrenal surgery in the UK is not in the best interests of patients and is not cost-effective for the NHS. Adrenal surgery is best performed by higher volume surgeons in centres with dedicated adrenal multidisciplinary teams expert in all aspects of care of the adrenal patient.

Spleen assessment after laparoscopic transperitoneal left adrenalectomy: preliminary results

BACKGROUND

Several laparoscopic approaches to the adrenal gland have been described. We prefer the lateral transabdominal approach. The aim of this study is to evaluate prospectively the presence of any anatomical and dynamic changes in the spleen after laparoscopic transperitoneal left adrenalectomy (LTLA), which can cause an increased risk of early and late complications.

METHODS

We have evaluated 21 patients before and 6 months after surgery in order to verify the possible presence of a wandering spleen. A clinical and instrumental follow-up [ultrasound (US), magnetic resonance (MR)] were performed. During US protocol, in supine, right lateral, and orthostatic position, the longitudinal and anteroposterior diameter of the spleen and the resistive index within 3 cm of the origin of the splenic artery in three different measurements averaged were measured. MR protocol evaluated, in supine and right lateral position, the splenic volume and its distances from the diaphragm dome and the lateral margin of the costal arch.

RESULTS

p Values calculated for each parameter were not statistically significant. Our results confirm the absence of any anatomical and dynamic changes in the spleen after LTLA.

CONCLUSIONS

The most common complications after laparoscopic adrenalectomy are well known and widely described. Our experience does not exclude the occurrence of a wandering spleen, but allows us to state that a rightful mobilization of the pancreaticosplenic block can avoid this event, and in agreement with other authors, the presence of a wandering spleen remains an isolated complication.

Laparoscopic Adrenalectomy for Large Adrenocortical Carcinoma

Background:

Adrenocortical cancer (ACC) is a rare disease that is difficult to treat. Laparoscopic adrenalectomy (LA) is performed, even for large adrenocortical carcinomas. However, the oncological effectiveness of LA remains unclear. This review presents the current knowledge of the feasibility and oncological effectiveness of laparoscopic surgery for ACC, with an analysis of data for outcomes and other parameters.

Database:

A systematic review of the literature was performed by searching the PubMed and Medline databases for all relevant articles in English, published between January 1992 and August 2014 on LA for adrenocortical carcinoma.

Discussion:

The search resulted in retrieval of 29 studies, of which 10 addressed the outcome of LA versus open adrenalectomy (OA) and included 844 patients eligible for this review. Among these, 206 patients had undergone LA approaches, and 638 patients had undergone OA. Among the 10 studies that compared the outcomes obtained with LA and OA for ACC, 5 noted no statistically significant difference between the 2 groups in the oncological outcomes of recurrence and disease-free survival, whereas the remaining 5 reported inferior outcomes in the LA group. Using a paired t test for statistical analysis, except for tumor size, we found no significant difference in local recurrence, peritoneal carcinomatosis, positive resection margin, and time to recurrence between the LA and OA groups. The overall mean tumor size in patients undergoing LA and OA was 7.1 and 11.2 cm, respectively (P = .0003), and the mean overall recurrence was 61.5 and 57.9%, respectively. The outcome of LA is believed to depend to a large extent on the size and stage of the lesion (I and II being favorable) and the surgical expertise in the center where the patient undergoes the operation. However, the present review shows no difference in the outcome between the 2 approaches across all stages. A poor outcome is likely to result from inadequate surgery, irrespective of whether the approach is open or laparoscopic.

Acute hypercortisolism: what can the surgeon offer?

Rapid onset or acute hypercortisolism is a rare critical illness requiring emergency management. The majority of patients will have underlying malignancy with surgery an obvious choice in the minority with resectable disease. For those with unresectable disease, medical management alone has been the traditional approach. However, this often proves inadequate raising interest in the role of surgery as palliation in this setting. Patient selection, timing of surgery and optimal surgical technique are areas of current controversy with little literature available to provide answers. Decisions regarding management of patients with acute hypercortisolism are complex, and these patients are best managed in a subspecialized setting.

[Preoperative α-receptor block in patients with pheochromocytoma? Against]

Perioperative mortality regarding the resection of catecholamine-producing tumors has been markedly improved. This improvement has been attributed to the preoperative treatment with α-receptor blocking agents. An α-receptor block is still recommended prior to the resection of pheochromocytoma or paraganglioma. However, the effect has never been tested in a randomized clinical trial. Despite an assumed effective α-receptor block, many centers report systolic blood pressure increases beyond 200 mmHg. Out of 200 consecutive resections of catecholamine-producing tumors, 73 patients without an α-receptor blockade were treated. There was no significant difference in the maximum systolic blood pressure or in the incidence of hypertensive episodes. There was no correlation between the individual dose of phenoxybenzamine and the maximum blood pressure. Overall it can be concluded that with the improvement of surgical techniques, diagnostic tools and highly effective short acting substances to control hemodynamics intraoperatively, the question must be raised whether a time-consuming, unreliable pretreatment burdened with significant side effects is still required.

Meta-analysis of trials comparing laparoscopic transperitoneal and retroperitoneal adrenalectomy

BACKGROUND

Laparoscopic adrenalectomies are being performed increasingly, either with transperitoneal or retroperitoneal approaches. Studies comparing the 2 approaches have not shown the superiority of either technique, but these studies are limited by small sample sizes and single-institution designs. To overcome these limitations, we performed a meta-analysis of studies comparing lateral transperitoneal adrenalectomy and retroperitoneal adrenalectomy.

METHODS

A systematic review of studies comparing lateral transperitoneal adrenalectomy and retroperitoneal adrenalectomy was conducted. Study endpoints included perioperative outcomes and measures of postoperative recovery. Meta-analysis was performed using a random effects model, pooling variables evaluated by more than 3 studies.

RESULTS

Twenty-one studies comparing a total of 1,205 lateral transperitoneal adrenalectomies and 688 retroperitoneal adrenalectomies were suitable for meta-analysis. Patients in the 2 groups were similar in term of age, sex, body mass index, lesion size and location, and rates of malignancy. There were no statistically significant differences between lateral transperitoneal adrenalectomy and retroperitoneal adrenalectomy in terms of operative time, blood loss, hospital stay, time to oral intake, overall and major morbidity, and mortality.

CONCLUSION

Both lateral transperitoneal adrenalectomy and retroperitoneal adrenalectomy are associated with very low rates of perioperative complications. According to our meta-analysis, clinical outcomes after either technique are similar. For most adrenal lesions requiring operation, minimally invasive adrenalectomy can be performed safely and effectively with either transperitoneal or the retroperitoneal approach. Additional studies may be needed to analyze if any difference in long-term results exist.

[Laparoscopic adrenalectomy in giant masses]

BACKGROUND

Laparoscopic adrenalectomy is considered the treatment of choice in the surgical management of the most majority of the adrenal diseases. Nevertheless, one of the much discussed topics is the dimensional cut-off for the laparoscopic treatment and it is not clear if laparoscopy should be used in large adrenal masses.Introduction. Laparoscopic adrenalectomy is the goal standard in benign adrenal masses smaller than 6 cm, while its advantages in masses larger than this cut-off and in malignant lesions is still discussed.

MATERIALS AND METHODS

We present six cases of laparoscopic adrenalectomy since November 2008 for masses between 7 and 15 cm; 4 men and 2 women. 3 right and 3 left. A complete adrenal endocrinological evaluation demonstrated that the lesions were not secreting tumors. All patients were studied with CT scan.The technique was performed using a flank approach with a 45° tilt. We used 5 trocars in patients who had the masses on the right side, and 4 in those who had the lesions on the left side. After creating an adequate pneumoperitoneum through an open access, the posterior peritoneum cutting, mobilization of the colon, medial dissection of the adrenal gland, and ligation of the main adrenal vein were performed. The adrenal gland was carefully dissected by Ultracision. The mass was extracted by endobag through an additional subcostal port. The mean operative time was 120 minutes. Blood loss was about 50 cc. The drainage was removed on day 2 after surgery and the patient was discharged on day 3. No postoperative complication occurred. The anatomopathologic exam gave evidence of myelolipoma and hemorrhagic cyst.

DISCUSSION

The benefits of the laparoscopic approach are widely demonstrated and consist of a shorter hospital stay, reduced morbility, decreased analgesic requirement, and reduced intraoperative blood loss. One of the most discussed topics is the dimensional cut-off and it is not clear if the laparoscopy approach should be used in large adrenal masses (considering the longer operative time and increasing blood loss). Many surgeons performed laparoscopic adrenalectomy for masses of up to 13 cm, thus demonstrating that this procedure is safe and effective. A limitation of laparoscopic approach for adrenal giant masses is the increased risk to treat an adrenal cortical carcinoma.

CONCLUSIONS

Our experience, supported by the literature, demonstrates that the laparoscopic adrenalectomy is a feasible and effective surgical technique also in the case of giant masses. Preoperative diagnosis has a predominant role to determine the contraindication of this technique (invasive adrenal carcinoma).

Adrenocortical carcinoma: which surgical approach?

INTRODUCTION

There are no randomised studies comparing open and laparoscopic approaches foradrenalectomy in patients with adrenal cortical carcinoma.

METHODS

There is evidence of postoperative benefit for the patients undergoing laparoscopic adrenalectomy compared to open adrenalectomy (level B).

RESULTS

Results from comparison of oncological outcomes in ACC between open and laparoscopic approaches are equivocal: increasedrisk of local recurrence and peritoneal carcinomatosis by the laparoscopic route (level D), and identical results between the two approaches in terms of survival, recurrence and peritoneal carcinomatosis (level C).

CONCLUSION

An open approach is recommended in case of local invasion, with a view to achieving an R0 resection (level D). Laparoscopic resection of ACC/potentially malignant tumours, which includes removal of surrounding periadrenal fat and results in an R0 resection without tumour capsule rupture, may be performed for preoperative and intraoperative stage 1-2 ACC and tumours with a diameter < 10 cm (level C).

[Flaccid paraplegia revealing an adenoma of Conn: a case report]

We report the case of Conn's adenoma in a 36-year-old woman, revealed by low extremities weakness. The patient had hypertension at 170/90 mmHg. Her initial potassium level was low i.e., 1.5 mmol/L. The diagnosis, confirmed by hormonal investigation, showed an elevation of plasma aldosterone and lower plasma renin activity. Abdominal MRI revealed a lesion in left adrenal gland, measuring 1.8 cm in diameter and taking contrast in periphery, compatible with an adrenal adenoma. The patient underwent a left laparoscopic adrenalectomy and microscopic examination confirmed the diagnosis. The postoperative course was uneventful with normalization of serum potassium level and blood pressure.

Risk factors for conversion and complications after unilateral laparoscopic adrenalectomy

BACKGROUND

Laparoscopic adrenalectomy (LA) is the procedure of choice for surgical management of most benign adrenal tumours, with a reported overall complication rate around 10 per cent. The aim of this study was to determine predictive factors for postoperative complications and conversion to open surgery after unilateral LA.

METHODS

From 1994 to 2009, consecutive patients undergoing unilateral LA by the lateral transabdominal approach were analysed from a prospectively maintained database. A mass larger than 12 cm in diameter and suspected primary adrenal carcinoma were considered contraindications to LA. Predictive factors for postoperative complications and conversion to open surgery were analysed.

RESULTS

Some 462 patients were analysed. There were no postoperative deaths. Postoperative complications occurred in 53 patients (11·5 per cent), medical complications in 28, and surgical complications in 33 patients. Six patients underwent reoperation for complications. Multivariable logistic regression analysis showed that conversion to open surgery (odds ratio (OR) 6·20, 95 per cent confidence interval 2·08 to 18·53; P = 0·001) and left-sided tumour (OR 1·89, 1·02 to 3·52; P = 0·044) were independent predictive factors for overall complications. Conversion to open surgery was the only independent predictive factor for medical complications (OR 12·88, 4·21 to 39·41; P = 0·001), and left-sided LA was the only predictive factor for surgical complications (OR 2·22, 1·01 to 4·89; P = 0·047). No factor was predictive of conversion to open surgery.

CONCLUSION

In this single-institution study, conversion to open surgery and left-sided tumours were independent predictive factors for overall complications, but none of the variables analysed was predictive of conversion.

Laparoscopic resection of large adrenal tumors

Results of this study suggest that laparoscopic adrenalectomy should be the treatment of choice for benign adrenal tumors. However, experience in advanced laparoscopic and open abdominal surgery is necessary in the management of large adrenal tumors.

Background:

Laparoscopic adrenalectomy has rapidly replaced open adrenalectomy as the procedure of choice for benign adrenal tumors. It still remains to be clarified whether the laparoscopic resection of large (≥8cm) or potentially malignant tumors is appropriate or not due to technical difficulties and concern about local recurrence. The aim of this study was to evaluate the short- and long-term outcome of 174 consecutive laparoscopic and open adrenalectomies performed in our surgical unit.

Methods:

Our data come from a retrospective analysis of 174 consecutive adrenalectomies performed on 166 patients from May 1997 to December 2008. Fifteen patients with tumors ≥8cm underwent laparoscopic adrenalectomy. Sixty-five patients were men and 101 were women, aged 16 years to 80 years. Nine patients underwent either synchronous or metachronous bilateral adrenalectomy. Tumor size ranged from 3.2cm to 27cm. The largest laparoscopically excised tumors were a ganglioneuroma with a mean diameter of 13cm and a myelolipoma of 14cm.

Results:

In 135 patients, a laparoscopic procedure was completed successfully, whereas in 14 patients the laparoscopic procedure was converted to open. Seventeen patients were treated with an open approach from the start. There were no conversions in the group of patients with tumors >8cm. Operative time for laparoscopic adrenalectomies ranged from 65 minutes to 240 minutes. In the large adrenal tumor group, operative time for laparoscopic resection ranged from 150 minutes to 240 minutes. The postoperative hospital stay for laparoscopic adrenalectomy ranged from 1 day to 2 days (mean, 1.5) and from 5 days to 20 days for patients undergoing the open or converted procedure. The mean postoperative stay was 2 days for the group with large tumors resected by laparoscopy.

Conclusion:

Laparoscopic resection of large (≥8cm) adrenal tumors is feasible and safe. Short- and long-term results did not differ in the 2 groups.

Minimally Invasive Adrenalectomy: A Multicenter Comparison of Transperitoneal and Retroperitoneal Approaches

Minimally invasive adrenalectomy (MIA) is both feasible and safe with either transperitoneal or retroperitoneal entry. However, only a few studies have rigorously compared these two techniques. The aim of the current study is to compare transperitoneal and retroperitoneal adrenalectomy to detect significant differences in patient selection and perioperative outcomes. Between 1995 and 2009, 171 patients underwent MIA through transperitoneal (n = 127) or retroperitoneal access (n = 44). The respective cohorts were then examined retrospectively through matched and unmatched comparisons. Multivariate analyses of intraoperative blood loss, postoperative morbidity, and length of hospital stay were performed. Surgical indications were benign lesions (70.2%), malignant tumors (11.1%), and pheochromocytomas (18.7%). The postoperative morbidity rate was 15.8 per cent, but mortality was null. The rate of conversion to open surgery was 5.3 per cent. Blood loss and operative time were significantly lower with the transperitoneal approach, whereas time to oral intake was shorter for the retroperitoneal group. Tumor size less than 4.5 cm was associated with less blood loss, shorter hospital stay, and lower postoperative morbidity. Laparoscopic and retroperitoneal routes are both effective and safe for excising adrenal lesions. In the present study, however, laparoscopic adrenalectomy demonstrated shorter operative times with less blood loss. Regardless of this, we remain cautious in recommending one procedure preferentially. Other important measures of clinical outcome such as required pain control, ease of patient recovery, and cost considerations were not included in this analysis. Further randomized trials, with large patient numbers, are therefore desirable for defining an optimal surgical method.

Adrenocortical carcinoma: is the surgical approach a risk factor of peritoneal carcinomatosis?

CONTEXT

Peritoneal carcinomatosis (PC) is a rare site of distant metastases in patients with adrenocortical cancer (ACC). One preliminary study suggests an increased risk of PC after laparoscopic adrenalectomy (LA) for ACC.

OBJECTIVE

The objective of the study was to search for risk factors of PC including surgical approach.

DESIGN

This was a retrospective cohort study conducted in an institutional practice.

PATIENTS

Sixty-four consecutive patients with ACC seen at our institution between 2003 and 2009 were included. Mean tumor size was 132 mm. Patients had stage I disease in 2 cases, stage II disease in 32 cases, stage III disease in 7 cases, stage IV disease in 21 cases, and unknown stage disease in 2 cases. Surgery was open in 58 cases and laparoscopic in 6 cases.

MAIN OUTCOME

The main outcome was the risk factors of PC.

RESULTS

PC occurred in 18 (28%) patients. It was present at initial diagnosis in three cases and occurred during follow-up in 15 cases. The only risk factor of PC occurring during follow-up was the surgical approach with a 4-year rate of PC of 67% (95% confidence interval (CI), 30-90%) for LA and 27% (95% CI, 15-44%) for open adrenalectomy (P=0.016). Neither tumor size, stage, functional status, completeness of surgery, nor plasma level of op'DDD was associated with the occurrence of PC.

CONCLUSION

We found an increased risk of PC after LA for ACC. Whether this is related to an inappropriate surgical approach or to insufficient experience in ACC surgery should be clarified by a prospective program.

Comparison of laparoscopic transabdominal lateral versus posterior retroperitoneal adrenalectomy

BACKGROUND

For the past 14 years, we have been performing laparoscopic adrenalectomy via the lateral transabdominal as well as the posterior retroperitoneal approach. The aim of this study is to describe patient selection criteria for each approach with comparison of perioperative outcomes.

METHODS

In patients with smaller tumors, low body mass index (BMI), history of previous abdominal operations, appropriate body habitus, and bilateral pathology, we have performed preferentially the posterior approach. Data regarding clinical pathology, tumor size, BMI, estimated blood loss (EBL), operating time (OT), morbidity, mortality, and duration of stay were analyzed retrospectively. Data are expressed as mean +/- standard error of the mean (SEM).

RESULTS

One hundred seventy-two laparoscopic adrenalectomy procedures were performed in 159 patients between 1994 and 2008. The lateral approach was used in 69 patients (right side: 39%, left side: 55%, bilateral: 6%) and the posterior approach in 90 patients (right side: 42%, left side: 48%, bilateral: 10%). The incidence of prior abdominal surgery was greater in the posterior group (26% vs 19%, NS). The lateral approach was used in 9% (3/34) of aldosteronoma, 38% (9/24) of Cushing's disease/syndrome, 47% (18/38) of nonsecreting cortical adenoma, 66% (23/35) of pheochromocytoma, 41% (7/17) of malignant lesions, and 73% (8/11) of others. Thirty percent of the bilateral adrenalectomies were performed via lateral and 70% via posterior approach. Two patients in the posterior approach were converted to the laparoscopic lateral approach, and 2 patients in the lateral approach were converted to open. Overall, patient age and sex were similar between groups. BMI was higher in patients undergoing adrenalectomy via lateral vs posterior approach (32.4 vs 28.4; P = .005). Tumor size was larger than 6 cm in 11 (16%) and 1 (1%) of the patients in the lateral and posterior groups, respectively. On univariate analysis, mean OT for lateral and posterior approaches was similar for unilateral cases (157 +/- 7 vs 138 +/- 6 min, respectively; P = NS). This was also true on multivariate analysis when corrected for patient selection factors. EBL was 35 +/- 7 mL for lateral versus 25 +/- 6 mL for posterior approach (P = .05). The duration of stay in lateral and posterior approaches was 1 day in 56% vs 82%, 2 days in 29% vs 13%, and more than 2 days in 15% vs 5% of the patients, respectively. Two patients in the lateral group died postoperatively because of cardiac and pulmonary causes, and 2 patients in the posterior group developed temporary neuralgia.

CONCLUSION

This series compares 2 different approaches for laparoscopic adrenalectomy. Our study shows that the lateral and posterior techniques have a similar peri-operative outcome when patients are selected for each option based on certain criteria.

The change in the principle of performing laparoscopic adrenalectomy from small to large masses

BACKGROUND

Laparoscopic adrenalectomy has become the gold standard in most patients with adrenal tumors. It is unclear; however, at what size an adrenal neoplasm should be resected by means of an open or a laparoscopic approach. The aim of the present study was to compare the outcomes of laparoscopic adrenalectomy for large tumors with smaller tumors.

METHODS

A prospective study of patients who underwent adrenalectomy during the period 2006-2009 was undertaken. The patients were divided into 2 groups according to the tumor size. Group 1 (n=29) consisted of patients presenting tumors smaller than 5 cm in diameter; group 2 (n=31) consisted of patients with tumors larger than 5 cm in diameter.

RESULTS

Two of the 29 tumors in group 1 (6.8%) were malignant at final histology. However, 11 of the 31 tumors in group 2 (35.4%) were malignant. There were no significant differences between operating time and complications of groups 1 and 2. The intra-operative blood loss was significantly lower in group 1 than in group 2.

CONCLUSION

Laparoscopic adrenalectomy is a reasonable procedure for selected large adrenal tumors when a complete resection is technically feasible and there is no evidence of local invasion.

Experience in identifying the venous drainage of the adrenal gland during laparoscopic adrenalectomy

Laparoscopic adrenalectomy (LA) is the procedure of choice for most adrenal tumors. An important part of LA is the early identification and ligation of the adrenal veins. The venous drainage from each adrenal gland is usually via a single vein: the right vein draining into the inferior vena cava (IVC) and the left vein into the left renal vein. Although infrequent, variable venous drainage has been documented. The aim of the study was to clarify if LA identified venous drainage and its variants. Between January 1999 and January 2008, 142 consecutive patients underwent LA. Adrenal vein anatomy was documented on a prospective database. In total, 142 patients underwent 162 LA (right = 62, left = 66, bilateral = 17). All adrenal veins were identified at the time of laparoscopy. For 157 LA, the adrenal venous drainage was constant: right vein drained into the IVC and left vein drained into left renal vein. Five patients had adrenal vein variants: two right veins draining separately into IVC (n = 1), two right veins draining into the IVC and right renal vein (n = 1), and two left veins draining separately into the left renal vein (n = 3). Adrenal vein variants were present in patients with phaeochromocytomas (n = 4) or adrenocortical carcinoma (n = 1). The laparoscopic approach allowed an excellent view of the main adrenal venous anatomy. This has helped confirm the constant nature of the venous drainage and successfully identify variant adrenal veins.

[Abdominal preoperation. No contraindication for laparoscopic transabdominal adrenalectomy]

Benign adrenal gland tumors smaller than 6 cm are nowadays the indication for minimally invasive surgery. Until now there has been no significant difference between retroperitoneoscopic and transabdominal adrenalectomy. Intestinal adhesions could be a contraindication against transabdominal laparoscopic adrenalectomy, and therefore the retroperitoneoscopic approach could be an advantage in these cases. A prospective study concerning this question has not been published yet. Our clinical investigation here includes 114 adrenalectomies during the last 5 years. We show that in any case of abdominal preoperation, laparoscopic adrenalectomy can be performed by transabdominal approach and without conversion to open surgery. Discussed are the different indications for laparoscopic adrenalectomy, operating time, conversion rate to open surgery, and amount and type of abdominal preoperation. We compared patients with and without abdominal preoperations.

Safety of laparoscopic adrenalectomy in patients with large pheochromocytomas: a single institution review

BACKGROUND

Laparoscopic adrenalectomy is the procedure of choice for small adrenal tumors, but some concerns have been voiced when this approach is adopted for larger tumors and pheochromocytomas. The aim of this study was to examine the results of the laparoscopic resection of large pheochromocytomas.

METHODS

A retrospective review of adrenalectomies performed for adrenal pheochromocytomas>6 cm in diameter. We compiled and analyzed the early operative complications, histologic findings, and cure rates with a minimum of 1 year of follow-up after surgery.

RESULTS

From 1996 to 2005, a total of 445 laparoscopic adrenalectomies were performed in our institution using the anterolateral transperitoneal approach. From this series we identified 18 procedures for pheochromocytomas with an average diameter on imaging of 78.2 mm (range 60-130 mm). All patients were rendered safe with a standard departmental protocol involving calcium-channel blockade initiated at least 2 weeks prior to surgery. The average peak intraoperative blood pressure was 187 mmHg. Capsular disruption occurred in two cases. One patient required an intraoperative blood transfusion due to intraoperative blood loss. No immediate conversions to an open procedure were required, but one patient underwent a delayed laparotomy for hematoma formation. Histologically, four of the adrenal tumors displayed evidence of vascular invasion. Biochemical cure was achieved in all patients after a median follow-up of 58 months (16-122 months).

CONCLUSIONS

Laparoscopic adrenalectomy appears to be a safe and effective approach for large pheochromocytomas when no preoperative or intraoperative evidence of local invasion is present.

Whether adrenal mass more than 5 cm can pose problem in laparoscopic adrenalectomy? An evaluation of 22 patients

OBJECTIVES

To evaluate technical feasibility and analyze outcome of laparoscopic adrenalectomy (LA) for large adrenal masses more than 5 cm.

METHODS

The data of 22 patients (8 men, 14 women), who underwent LA for adrenal masses >5 cm between January 1995 and July 2007 were analyzed for this study.

RESULTS

Twenty-two patients with a mean age of 42.5 years underwent LA for large adrenal masses (>5 cm) between January 1995 and July 2007. Transperitoneal and retroperitoneal laparoscopic adrenalectomy (TPLA and RPLA) was performed in 15 and 7 patients, respectively. The mean-operative time, blood loss, tumor size and hospital stay were 149.33 and 132.1 min, 132.33 and 94.28 ml, 7.85 and 5.85 cm and 3.5 and 3.28 days, respectively. Histopathological examination of the specimen confirmed adrenal carcinoma in 5, pheochromocytoma in 14, myelolipoma in 2 and adenoma in 1 patient. Two patients of pheochromocytoma had required open conversion, one from each group (TPLA and RPLA). Three patients had postoperative complications (wound infection 1, pneumonitis with fever 1 and retroperitoneal collection 1).

CONCLUSIONS

The size of an adrenal mass on preoperative imaging studies alone should not be the primary factor in determining whether LA should be performed. LA for adrenocortical cancers could be performed safely and effectively in the selected group. Transperitoneal approach is most suitable and recommended for large adrenal tumor and adrenal carcinoma to employ laparoscopy. One approach (TP or RP) over the other also does not lead to the substantial benefits either to the patients or to the surgeon.

The role of laparoscopic adrenalectomy for adrenal tumours of 6 cm or greater

BACKGROUND

Laparoscopic adrenalectomy (LA) has been shown to reduce hospital stay and morbidity when compared to open adrenalectomy (OA). It is uncertain if the laparoscopic resection of large (>/=6 cm) potentially malignant adrenal tumours is appropriate due to concern over incomplete resection and local recurrence. The aim of the present study was to compare the outcomes of LA for tumours >/=6 cm with those < 6 cm.

METHODS

Details of all patients referred with adrenal tumours between January 1999 and January 2006 had been recorded prospectively on a database. LA was performed using a lateral transabdominal approach. Contraindications to LA were local invasion requiring en bloc resection of adjacent organs or the requirement of additional open procedures.

RESULTS

103 patients were referred for adrenal resection. Three with metastatic adrenal carcinoma and two with severe cardiorespiratory disease were deemed unsuitable for operation. One hundred and eleven adrenalectomies were performed: 101 LAs and 10 OAs. Thirty-nine LA were for tumours >/=6 cm while nine OA were for tumours >/=6 cm. There were no significant differences between the median total anaesthetic time, postoperative complications or postoperative stay for patients undergoing LA for tumours >/=6 cm versus tumours <6 cm. Of the six conversions, five were performed for adrenal tumours >/=6 cm [local invasion (n = 3), adhesions (n = 1), primary renal carcinoma (n = 1)]. All tumours in the LA group were resected with clear margins and at a median follow up of 50 months (range 38-74 months). There has been no evidence of local recurrence.

CONCLUSIONS

In the absence of local invasion, the outcomes of laparoscopic adrenalectomy for patients with tumours >/=6 cm were comparable to those with tumours <6 cm. This has helped confirm a policy of initial laparoscopic resection for all noninvasive adrenal tumours can be applied safely.

Adrenalectomy in Hong Kong: a critical review of adoption of laparoscopic approach

BACKGROUND

A population-based study on adrenal surgery for treatment of adrenal diseases is still lacking. The aim of the present study is to evaluate the practice and the adoption of laparoscopic adrenalectomy (LA) in a stable population, as well as the potential impact of case volume on outcomes.

METHODS

Patients undergoing elective adrenalectomy (n = 486) from 15 Hong Kong public hospitals over a 6-year period were reviewed. Patients undergoing LA (n = 353) were compared to those undergoing open adrenalectomy (n = 133).

RESULTS

The overall number of adrenalectomies and the number and proportion of laparoscopic approach increased progressively during this period. The median operating time was similar but the median blood loss (50 mL vs 300 mL, P < .01) was less and the mean hospital stay (4.4 days vs 9.4 days) was shorter for LA. Smaller lesions tended to be selected for LA. There was no correlation between postoperative outcome with respect to length of stay and case volume for LA.

CONCLUSIONS

The adoption of LA in Hong Kong hospitals was propagating progressively. Patients selected for LA had improved outcome although there seemed to be no significant correlation between postoperative outcome and case volume.

Laparoscopic surgery and corticoadrenalomas

BACKGROUND

Nowadays, laparoscopic adrenalectomy is the "gold standard" procedure for the treatment of benign lesions. However, the situation is not so clearcut when the issue is laparoscopic excision of malignant adrenal tumors. We present our results of laparoscopic adrenalectomy for treating malignant tumors over the past decade.

METHODS

Between October 1995 and June 2004, 131 consecutive laparoscopic adrenalectomies were performed on 120 patients (11 synchronous bilateral procedures). All patients underwent a standardized investigation protocol during their workup for surgery.

RESULTS

There were only two conversions to laparotomy (1.6%). Complications that occurred during the procedure were limited to six patients (5%). Postoperative 30-days mortality was nil. Postoperative complications occurred in five patients (4.7%) during the first 30 days of recovery. The median hospital stay for all patients was 2.5 days (range = 2-10 days). Twelve patients (9%) had a malignant tumor: nine corticoadrenalomas, one pleomorphic sarcoma, one metastatic deposit from a previously excised colonic cancer, and one malignant pheochromocytoma. At mean followup of 34 months, mean survival time was 42.3 months for corticoadrenalomas that had undergone laparoscopy versus 29.7 months for those who had had a laparotomy. Five of the nine patients are alive and well at a mean of 37 months following surgery. One patient developed pulmonary metastases one year postsurgery; they were responsive to mitotane. Five years later, the same patient had a reoperation for an intra-abdominal retrogastric recurrence of her tumor and continues to do well. Another patient developed pulmonary metastases 22 months following adrenalectomy. Two patients died of metastatic intra-abdominal disease 20 and 7 months postsurgery.

CONCLUSION

When laparoscopic surgery is to used for cancer treatment, caution is the rule to maintain the primary objective of securing a survival rate at least as high as that for open surgery, without increased risk of recurrence. Considering the results presented within this study, it seems that the laparoscopic removal of a corticoadrenaloma should not worsen the prognosis, provided the surgeon respects the primary rules of oncologic resectional surgery. Any surgical conditions that would preclude the strict application of these criteria are contraindications to a laparoscopic procedure.

Isolated adrenal metastasis: the role of laparoscopic surgery

BACKGROUND

Solitary adrenal metastases (AM) are rare and their management unclear. Surgery, especially laparoscopic adrenalectomy (LA), is debatable in the management of AM. This retrospective study analysed the feasibility and the results of LA for AM.

METHODS

From 1997 to 2003, 16 patients underwent LA for isolated AM. Completeness of resection, postoperative morbidity and follow-up (FU) were recorded.

RESULTS

There were 10 synchronous AM and 6 metachronous AM. Primary tumours included lung cancer (n = 9), melanoma (n = 3), mesothelioma (n = 1), rhabdomyosarcoma (n = 1), colonic adenocarcinoma (n = 1) and renal cell carcinoma (n = 1). Five patients required conversion to an open procedure. Minor complications occurred in three patients. Pathology confirmed the diagnosis of AM. Mean tumour size was 60 (range: 15-110) mm. Nine patients (56%) had complete resections, 3 had positive margins and 4 had incomplete macroscopic resections. Mean observed FU was 25 (range: 1-68) months. Median overall calculated survival was 23 months. Overall 5-year survival was 33% (Kaplan-Meyer). At the end of study, 8 patients were alive with a mean FU of 35 months (3 without evidence of disease). No patient presented with local relapse or port-site metastasis. We did not identify any predictive factors. All patients with incomplete macroscopic resection died within 24 months.

CONCLUSIONS

LA can achieve an acceptable 5-year survival, comparable to open surgery but with better postoperative comfort. It should be considered for AM with the intention of complete resection. It offers the patient the possibility of tumour resection with the benefit of a laparoscopic approach.

Long-term outcome following laparoscopic adrenalectomy for large solid adrenal cortex tumors

INTRODUCTION

Laparoscopic adrenalectomy (LA) is the procedure of choice for small benign adrenal tumors. In the absence of local invasion or metastases, the preoperative diagnosis of an adrenocortical carcinoma (ACC) is difficult, often leaving size as the principal predictor of malignancy. Large tumors are resectable laparoscopically, but the long-term outcome and therefore appropriateness of LA for cortical tumors > 6 cm is not known.

METHODS

We reviewed the LA experience in our institution since its introduction in June 1994. Patients who underwent LA for solid cortical tumors > or = 60 mm in diameter without preoperative or intraoperative evidence of malignancy were reviewed. Follow-up data, including clinical examination, biochemical analysis, and repeat scans, were reviewed for evidence of local or systemic recurrent disease.

RESULTS

Between 1994 and 2004 a total of 462 adrenalectomies were performed, 391 of which were done laparoscopically. Among them, 19 were solid cortical tumors > or = 60 mm in diameter with no overt malignant preoperative or intraoperative characteristics: 9 nonsecreting tumors, 8 Cushing's syndrome tumors (including 2 virilizing variants), 1 virilizing tumor, and 1 aldosteronoma. The mean age of the patients was 49.9 years (range 22-77 years), and the mean tumor size was 69.0 mm (range 60-80 mm). Histology confirmed a cortical adenoma in eight patients, malignant tumors in three, and indeterminate tumors in eight. The mean follow-up was 34 months (range 4-108 months). Two patients died of systemic recurrent disease (liver metastases) at 10 and 19 months, respectively, following surgery; two other patients died 12 and 21 months, respectively following surgery owing to unrelated cardiovascular and cerebrovascular pathology. One patient underwent surgery for local recurrence 54 months after primary surgery; the remaining 14 patients are well with no clinical or radiologic evidence of recurrent disease.

CONCLUSIONS

Laparoscopic adrenalectomy for large solid cortical tumors without pre- or intraoperative evidence of malignancy is not contraindicated, and it is unlikely to have a deleterious effect on long-term outcome. Each case should be considered individually. We provide an algorithm for the approach to adrenocortical tumors > or = 6 cm.

Laparoscopic adrenalectomy

Laparoscopic adrenalectomy (LA) was first described in the literature in 1992, and has become the preferred method for the removal of benign functioning and non-functioning tumors of the adrenal gland <12 cm. The objectives of the present study are to review the experience of LA gained since it was first done in 1992 and to critically evaluate its effectiveness for the surgical management of endocrine hypertension; specifically pheochromocytoma, aldosteronoma and Cushing's syndrome and disease, as opposed to open adrenalectomy. The benefits of minimally invasive techniques for the removal of the adrenal gland include decreased requirements for analgesics, improved patient satisfaction, shorter hospital stay and recovery time when compared to open surgery. LA can be performed safely for bilateral disease and may become the standard of care for malignant tumors. Current limitations are operator-dependent and not a factor of limitations of minimally invasive techniques. A thorough pre-operative work-up is key for differentiating the various cases of hypertension and adequate pre-operative treatment is paramount when indicated.

Role of laparoscopy in the management of adrenal malignancies

BACKGROUND AND OBJECTIVES

The role of laparoscopic approach for the treatment of malignant adrenal diseases is still controversial. The aim of this study was to verify the results of laparoscopic adrenalectomy (LA) in the management of adrenal malignancies.

METHODS

The medical records of all the patients who underwent laparoscopic procedures for adrenal diseases and in whom malignancy was demonstrated at final histology were reviewed.

RESULTS

Nine patients were included (three malignant pheochromocytomas, four adrenocortical carcinomas, and two adrenal metastases). At a mean follow-up of 23.0 months, all but two patients were alive. One patient died for metastatic disease and the other one for unrelated causes. One patient operated on for an adrenocortical carcinoma developed a pelvic recurrence. One patient operated on for a malignant pheochromocytoma developed multiple intra-abdominal recurrences. No other case of recurrence was observed.

CONCLUSIONS

The results of this study demonstrate that LA can have a role also in case of adrenal malignancies. Conversion to open surgery is mandatory in case of local invasion and when the dissection cannot be as accurate as in conventional operations. A preliminary laparoscopic exploration can be planned in case of suspected malignant lesions to confirm the diagnosis and to evaluate their operability.

Benefits of Laparoscopic Adrenalectomy: A 10-year Single Institution Experience

INTRODUCTION

We aimed to compare the outcomes of laparoscopic and open adrenalectomies and to assess the impact of the availability of advanced laparoscopy on adrenal surgery at our institution.

MATERIALS AND METHODS

A retrospective analysis of data of all patients who underwent adrenalectomy at the University of Massachusetts Medical Center over a 10-year period.

RESULTS

Sixty-four consecutive patients underwent adrenalectomy during the study periods. There were 19 open (OA) and 45 laparoscopic (LA) adrenalectomies performed. There was no significant difference between the average size of adrenal masses removed for the LA and the OA groups [4.3 vs. 5.5 cm, respectively (P=0.23)]. LA proved superior to OA, resulting in shorter operative times (171 vs. 229 min, P=0.02), less blood loss (96 vs. 371 mL, P<0.01), shorter time to regular diet (1.9 vs. 4.4 d, P<0.001), and shorter hospital stay (2.5 vs. 5.8 d, P=0.02). In addition, the average annual number of adrenalectomies increased significantly since the establishment of our advanced laparoscopic program (10.0 vs. 2.0, P=0.02).

CONCLUSIONS

LA offers superior results when compared to OA in terms of operative time, blood loss, return of bowel function, duration of hospital stay, and functional recovery. The availability of advanced laparoscopy has resulted in a significant increase in the number of adrenalectomies performed at our institution without a shift in surgical indications.

Laparoscopic adrenalectomy for functioning and non-functioning adrenal tumors: analysis of surgical aspects based on histological types

BACKGROUND

The aim of this study was to evaluate whether hormonal functions of the tumor influence the operative results of laparoscopic adrenalectomy, and to analyse the clinical outcomes in patients with various hormonally active adrenal tumors.

METHODS

Clinical and pathological records of 68 patients were reviewed. The average age of patients was 40 years (range 20-75); 39 were women and 29 men. For the comparison, patients were divided into the non-functioning tumor group (n = 22) and the functioning tumor group (n = 46).

RESULTS

All laparoscopic adrenalectomies were finished successfully, and no open surgery was necessary. The median operative time and blood loss in the two groups were similar; however, in subgroup analysis, operative time for pheochromocytoma was significantly longer than that for non-functioning tumor (P = 0.044). No difference was noted in intra- and postoperative data between the groups. Of the 22 patients with aldosteronoma, 18 (81.8%) became normotensive and no longer required postoperative blood pressure medications. Adrenalectomy led to an overall reduction in the median number of antihypertensive medications (P < 0.001). All patients with Cushing adenoma had resolution or improvement of the signs and symptoms during follow-up periods. There was no evidence of biochemical or clinical recurrence in any patient with pheochromocytoma.

CONCLUSION

The results of this retrospective review document that laparoscopic adrenalectomy is a safe and effective treatment for functioning as well as non-functioning adrenal tumors, although endocrinologic features may play a significant role.

Bilateral Adrenalectomy for Ectopic Cushing’s Syndrome—Discussions on Technique and Indication

BACKGROUND

Tumors producing adrenocorticotropic hormone (ACTH) or corticotropin releasing hormone (CRH) often remain undiagnosed until severe Cushing's syndrome appears, and it may be difficult to distinguish from Cushing's syndrome due to pituitary tumors. Many patients suffer from disease spread, with metastases in the liver or other locations, and the main symptoms may be mineral disturbances, diabetes mellitus, or psychological symptoms from the severe hypercortisolism. Bilateral adrenalectomy may alleviate this situation, but is sometimes a troublesome procedure in these severely ill patients.

METHODS

We have retrospectively investigated 8 patients with ectopic Cushing's syndrome who have undergone bilateral adrenalectomy at the University Hospital in Uppsala. In addition, another 5 patients who underwent bilateral adrenalectomy for other reasons (recurrent pituitary Mb Cushing or bilateral hyperplasia) were scrutinized for technical considerations. Indications, timing of surgery, and operative procedures were studied to identify signs that may support our approach to management in the future.

RESULTS

Curative surgery was not possible in any of the cases with ectopic Cushing's syndrome. Of the 13 operated patients, handport-assisted laparoscopic adrenalectomy was successfully performed bilaterally in 5 patients and unilaterally in combination with contralateral open surgery in 1 patient; conventional open surgery was performed on 7 patients, 3 of which were conversions from intitial handport-assisted procedures. Non-fatal complications occurred in 4 out of 10 patients.

CONCLUSIONS

We conclude that bilateral handport-assisted laparoscopic adrenalectomy is safe, and that all surgical techniques in these severely ill patients may be troublesome and technically demanding. Early surgical intervention may reduce the technical disadvantages. Moreover, bilateral adrenalectomy can substantially reduce the symptoms of Cushing's syndrome, although effects on mortality are not obvious.

Suprarrenalectomía abierta y laparoscópica. Revisión de 10 años

We present a 10 years open adrenalectomy review in our Service and the beginning of laparoscopic adrenalectomy in the last year as a part of the retroperitoneal laparoscopic program at the Hospital Universitario La Paz . The first laparoscopic adrenalectomy was done after 21 retroperitoneal laparoscopic surgeries. Our initial experience has been so good that we have reduced the contraindications for this technique and we have increased the number of laparoscopic surgery cases.