Multi-domain neurocognitive impairment following definitive intensity-modulated radiotherapy for nasopharyngeal cancer: A cross-sectional study

INTRODUCTION

Neurocognitive impairment from inadvertent brain irradiation is common following intensity-modulated radiotherapy (IMRT) for nasopharyngeal carcinoma (NPC). This study aimed to determine the prevalence, pattern, and radiation dose-toxicity relationship of this late complication.

MATERIALS AND METHODS

We undertook a cross-sectional study of 190 post-IMRT NPC survivors. Neurocognitive function was screened using the Montreal Cognitive Assessment-Hong Kong (HK-MoCA). Detailed assessments of eight distinct neurocognitive domains were conducted: intellectual capacity (WAIS-IV), attention span (Digit Span and Visual Spatial Span), visual memory (Visual Reproduction Span), verbal memory (Auditory Verbal Learning Test), processing speed (Color Trail Test), executive function (Stroop Test), motor dexterity (Grooved Pegboard Test) and language ability (Verbal Fluency Test). The mean percentiles and Z-scores were compared with normative population data. Associations between radiation dose and brain substructures were explored using multivariable logistic regression.

RESULTS

The median post-IMRT interval was 7.0 years. The prevalence of impaired HK-MoCA was 25.3 % (48/190). Among the participants, 151 (79.4 %) exhibited impairments in at least one neurocognitive domain. The predominantly impaired domains included verbal memory (short-term: mean Z-score, -0.56, p < 0.001; long-term: mean Z-score, -0.70, p < 0.001), processing speed (basic: mean Z-score, -1.04, p < 0.001; advanced: mean Z-score, -0.38, p < 0.001), executive function (mean Z-score, -1.90, p < 0.001), and motor dexterity (dominant hand: mean Z-score, -0.97, p < 0.001). Radiation dose to the whole brain, hippocampus, and temporal lobe was associated with impairments in executive function, verbal memory, processing speed, and motor dexterity.

CONCLUSIONS

Neurocognitive impairment is prevalent and profound in post-IMRT NPC survivors. Cognitive assessment and rehabilitation should be considered part of survivorship care.

Late complications of cochlear implant: a case report of necrotizing meningoencephalitis similar to a CPA tumor

OBJECTIVE

Report a case of localized necrotizing meningoencephalitis as the cause of functional hearing loss after cochlear implant (CI) surgery.

CASE REPORT

A 12-year-old with bilateral CI presented to our quaternary center due to severe functional hearing loss after 11 years since left ear CI surgery. CT with contrast was conducted showing a CPA tumor-like mass. Pre-operative computed tomography (CT) scans and magnetic resonance imaging (MRI) performed at the age of 1 year showed no inner ear abnormalities and in particular no evidence of a tumor in the cerebellopontine angle (CPA).

CONCLUSION

Following removal of the CI and the mass, histopathological, immunohistochemical and cultural examinations revealed a necrotizing meningoencephalitis, with the CI electrode as the focus.

Current treatment strategies for postoperative intrahepatic bile duct stones in congenital biliary dilatation: a single center retrospective study

BACKGROUND

Intrahepatic bile duct (IHBD) stones are one of the most common late complications of Roux-en-Y hepaticojejunostomy for congenital biliary dilatation (CBD). We report the current treatment strategies for IHBD stones and their outcomes in our institute.

METHODS

Between 1983 and 2021, 117 patients with CBD were surgically treated in our institute. Our treatment strategies included oral ursodeoxycholic acid (UDCA), double-balloon endoscopic retrograde cholangiography (DB-ERC), percutaneous cholangio-drainage (PTCD), and open surgery. A retrospective study was conducted using medical charts.

RESULTS

Postoperative IHBD stones were identified in 12 of 117 patients with CBD (10.2%). Five patients received UDCA, and small stones were successfully resolved in two cases. DB-ERC was performed eight times in five patients, but the endoscope could not reach the porta hepatis due to a long jejunal loop in two of five patients. One patient presented with severe acute pancreatitis induced by prolonged DB-ERC. PTCD was performed in three patients, two of whom finally underwent open surgery due to unsuccessful lithotomy. Open surgery was eventually performed in three patients. Lithotomy was performed in one patient; lithotomy with strictureplasty was performed in another patient. The other patient was diagnosed with intrahepatic cholelithiasis with adenocarcinoma. He underwent left lobectomy and died of carcinomatous peritonitis.

CONCLUSIONS

Oral UDCA may be effective for small stones. Although DB-ERC should be considered as a first-line interventional therapy for lithotomy, it may not be feasible due to a long jejunal loop, and pancreatitis may occur. Long-term follow-up and early detection and treatment for IHBD stones may yield a good prognosis.

Factors affecting late complications of percutaneous endoscopic gastrostomy tube replacement

BACKGROUND

Late complications associated with percutaneous endoscopic gastrostomy (PEG) tube in patients are common occurrences. We aimed to identify risk factors associated with PEG-related late complications.

METHODS

Patients who underwent PEG exchange were retrospectively collected from electronic medical records between January 2015 and November 2020. Medical records were reviewed longitudinally from the PEG replacement date until the first complication event, death, or the end of the study. The late complication was defined as the PEG-related complications six months after the initial PEG placement. Potential risk factors were tested using Cox proportional hazard.

RESULTS

A total of 116 patients (mean age 80.5 ± 17.6 years, 52.6% male) were enrolled with a 12 (4-23) months median follow-up. The indications were mostly neurologic disease (89.7%). Non-balloon PEG was used in 93 (80.2%) patients with balloon-type in 23 (19.8%) patients. PEG-related late complications developed in 35 (30.2%) patients with a median time of 9 (4-23) months. In the multivariate analysis, the PEG-related late complication rate was significantly higher in patients with balloon-type PEG tube (HR 5.54; 95%CI, 2.55-12.05; p < 0.001) and also showed a significantly higher cumulative incidence of developing complications (54.9% vs. 12.8% at one year and 76% vs. 22.8% at two years, p < 0.001). The most common complication was PEG dislodgement (n = 14, 40%).

CONCLUSION

Late-onset of PEG tube-associated complications is a common problem. The significant factor associated with PEG tube complication was balloon-type PEG placement.

Purpura as a late complication of covid-19 infection that should not be ignored: Case report and brief review

Introduction and importance

The SARS COV2 infection is a challenging pandemic that has affected millions of people with a very high mortality rate. In addition to the typical respiratory symptoms, it can also cause variable skin lesions, such as vascular purpura in some exceptional cases.

Case presentation

We report the case of a 60-year-old woman who was admitted for a SARS COV2 infection, the evolution was marked by the appearance of a vascular purpura at D20 after the beginning of the symptoms.

Discussion

The cutaneous manifestations associated with the SARS COV2 infection are polymorphic. Vascular purpura is one of them. Its diagnosis is retained in the light of a combination of arguments, which makes it a real challenge for the physician to diagnose it. The management of the disease is based on a symptomatic treatment. The clinical evolution is, in general, favorable.

Conclusion

Although rare and still not fully explained, skin involvement during SARS COV2 infection has been described. It should not be neglected and it should be diagnosed early and treated appropriately, especially in asymptomatic patients.

•

Infection with the COVID-19 virus can be manifested by clinical signs of varying severity, sometimes fatal.

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Being a systemic disease, SARS COV2 infection may be revealed, in addition to respiratory symptoms, by skin lesions including vascular purpura

•

We report a case of vascular purpura occurring post-infection

Late onset penile abscess after 4 years from hyaluronic acid injection. A rare case report

Penile Augmentation is a debatable issue among men community. Even though Self-conviction of penile size affected by many Factors. Many men seek it just to get confident. Although fillers gain popularity in soft tissue augmentation nowadays, there is no enough study trace these elements as long term follow up in this field. To our knowledge, we describe a rare case of late onset abscess after penile augmentation using hyaluronic acids (HAs) after 4 years without any risk factors.

Incidence of anastomotic stricture after hepaticojejunostomy with continuous sutures in patients who underwent laparoscopic pancreaticoduodenectomy

PURPOSE

Laparoscopic hepatojejunostomy (HJ) with continuous sutures is commonly performed in laparoscopic pancreaticoduodenectomy (LPD). This study aimed to investigate the long-term surgical outcomes of HJ in LPD.

METHODS

We retrospectively evaluated 103 consecutive patients who underwent pancreaticoduodenectomy via laparoscopic HJ with continuous suturing using multifilament (n = 48) or monofilament-absorbable sutures (n = 47).

RESULTS

During follow-up, anastomotic stricture of HJ was identified in 8 (7.8%) patients via balloon enteroscopy-assisted cholangiography. The median time from surgery to confirmation of stricture formation was 7.6 months (range 3.6-19.4). The incidence of HJ stricture was significantly higher in patients with a thin bile duct (diameter < 6.0 mm) than in those with a thick bile duct (diameter ≥ 6.0 mm) [7/27 (25.9%) vs. 1/76 (1.3%), respectively, p < 0.01]. Similarly, it was significantly higher in the monofilament group than in the multifilament group [7/54 (13.0%) vs. 1/49 (2.0%), respectively, p = 0.04]. In the monofilament suture group, 37.5% of patients with thin bile ducts developed stricture after HJ. A multivariate analysis revealed that a thin bile duct was an independent risk factor for HJ stricture (hazard ratio: 25.3, p < 0.01).

CONCLUSIONS

Stricture after laparoscopic HJ using continuous sutures frequently occurs in patients with thin bile ducts, particularly when monofilament-absorbable suture is used.

Myocardial ischemia 10 years after a modified Cabrol procedure in a 42-year-old patient with Marfan syndrome

Background

Marfan syndrome, a genetic disorder of the connective tissue, may cause aortic root dilation with aortic insufficiency, aortic dissection and mitral prolapse with mitral insufficiency. We present a case of a late complication of the modified Cabrol procedure that included replacing the ascending aorta with a composite graft.

Case presentation

In February 2019, a 42-year-old female patient with Marfan syndrome who presented with chest pain was sent to the Emergency Department. She had undergone the modified Cabrol procedure 10 years prior. Upon presenting, laboratory analysis revealed elevated troponin-I levels. Electrocardiogram showed new inverted T waves over lead I, aVL and V4 to V6. Contrast computed tomography (CT) revealed thrombosis in the Dacron graft. Percutaneous coronary angiography was conducted, and a large thrombus in the graft was noted. Thrombolytic therapy and percutaneous coronary intervention were performed, after which the patient had no more symptoms and was discharged without complications.

Conclusions

Aortic root surgery, including the Cabrol or modified Cabrol procedure, is necessary for complicated cases of aortic dilations, such as in patients with Marfan syndrome, even though the Cabrol or modified Cabrol procedure has a high complication rate. Regarding this case, we were surprised by the timing of the myocardial ischemia and the position of the thrombus, which differed from other cases. To better manage such a patient’s condition and to detect the formation of thrombus early, completeness of the graft and possible stenosis of the anastomosis site to avoid preventable myocardial ischemia, we suggest that patients should have regular image follow-up, even years after the Cabrol or modified Cabrol procedure.

Long-term results of additional pulmonary blood flow with bidirectional cavopulmonary shunt

Objective

We evaluated additional pulmonary blood flow at the time of bidirectional cavopulmonary shunt and its effects on the Fontan procedure and long-term outcome of Fontan circulation and liver function.

Methods

We included 22 patients (16 boys, 6 girls) having undergone bidirectional cavopulmonary shunt with additional pulmonary blood flow between April 2002 and January 2016. Mean age and body weight were 20 ± 13 months and 7.5 ± 6.5 kg, respectively. We retrospectively evaluated the patients’ clinical data, including cardiac catheterization data, liver function, and liver fibrosis markers.

Results

All patients were alive with a New York Heart Association status of I at the long-term follow-up. Changes between pre-bidirectional cavopulmonary shunt and 101 months after the Fontan procedure included the following: the cardiothoracic ratio of chest X-ray decreased from 52.2 ± 3.9% to 41.8 ± 5.9% (p < 0.001); systemic ventricle end-diastolic pressure decreased from 11.4 ± 3.2 mmHg to 6.9 ± 3.6 mmHg (p < 0.001); and the pulmonary artery index decreased from 485.1 ± 272.3 to 269.5 ± 100.5 (p = 0.02). Type IV collagen, hyaluronic acid, and procollagen levels increased over the normal range 116 months after the Fontan procedure.

Conclusions

The additional pulmonary blood flow at the time of bidirectional cavopulmonary shunt may contribute to pulmonary arterial growth at the Fontan procedure with low pulmonary arterial resistance and without ventricle volume overload. The Fontan circulation was well-maintained at the long-term follow-up, while liver fibrosis markers were above their normal values.

Late presentation of left atrial appendage erosion and perforation by an Amplatzer™ Amulet™ closure device: a case report

Background

Percutaneous left atrial appendage (LAA) closure may reduce the risk of cardioembolic stroke in patients with non-valvular atrial fibrillation. Given the prophylactic nature of the procedure, identifying and managing complications are paramount.

Case summary

A 73-year-old man presented 14 months after percutaneous LAA closure with syncope and acute pericardial tamponade which required surgical exploration and haemostasis; the most temporally remote account of this complication albeit amongst very few case reports. Tissue erosion by the Amplatzer™ Amulet™ LAA closure device (Abbott, Plymouth, MN, USA) was noted at two separate anatomical locations, corresponding to the device disc and lobe, which has not been described previously.

Discussion

This case report highlights the anatomical relationship between the LAA and its surrounding structures, and the importance of recognizing the risk of late device erosion.

Obstructive pneumonia owing to migration of a Teflon pledget at 8 years after surgery for a pulmonary carcinoid tumor: a case report

Background

It is uncommon for a bronchial stump-related complication to develop during the remote postoperative period in a case of obstructive pneumonia owing to migration of the suture material. Here, we describe a case of bronchial obstructive pneumonia that developed owing to migration of the suture material in the airway 8 years after pulmonary resection.

Case presentation

A 34-year-old woman underwent left lower lobectomy for a pulmonary carcinoid tumor (pT1bN0M0-stage IA) in 2010. She experienced obstructive pneumonia, and chest computed tomography revealed a mass protruding from the bronchial stump to the bronchial lumen in 2018. After treatment for pneumonia, flexible bronchoscopy showed the presence of a fibrous suture material (Teflon pledget) completely obstructing the left second carina. A week later, the Teflon pledget obstructing the bronchial lumen was removed using a flexible bronchoscope with the patient under general anesthesia. The procedure was completed without removing the small amount of granulation tissue because the bronchial lumen opened after removing the Teflon pledget. She has remained asymptomatic for 1 year after removal.

Conclusions

In this case, the complication of obstructive pneumonia developed owing to migration of the non-absorbable suture materials used to suture the bronchial stump. Bronchoscopic management of this rare complication comprised endobronchial removal with the patient under general anesthesia. Given our experience with this case, we believe that such conservative management should allow for excellent results in most instances and avoid the need for reoperation.

Very late-onset flap margin corneal ulcer following laser in situ keratomileusis

PURPOSE

To report and characterize cases of very late onset (5 years or more after surgery) flap margin corneal ulcers after laser in situ keratomileusis (LASIK) procedure.

METHODS

A retrospective case series of consecutive patients who were diagnosed with very late flap margin corneal ulcers following LASIK, between January 2014 and July 2017. All patients were treated with topical antibiotics and were followed up until complete resolution.

RESULTS

A total of eight patients, with a mean age of 46.5 ± 11 years, (range 31-64 years), were included in this study. All patients underwent uneventful myopic LASIK 13.3 ± 3 (range 10-20) years before presentation. Patients best corrected visual acuity (BCVA) at presentation was 0.20 ± 0.15 logMAR compared to a final BCVA of 0.10 ± 0.10 logMAR (p = 0.28). The ulcer was located in the bottom two clock hours of the flap margin (5-7 o'clock) in six (75%) patients and superior (11 o'clock) in the remaining two patients (p = 0.048). Seven patients (87.5%) suffered from blepharitis, and only one did not.

CONCLUSIONS

LASIK may be associated with an increased risk of late-onset corneal ulcer occurring years after the procedure. Instability of the flap margin, blepharitis and dry eye are possible causes of epithelial disturbance and may account for this complication.

Late complications after hybrid aortic arch repair

OBJECTIVE

Although hybrid arch repair has gained widespread application as an alternative option for high-risk patients, concerns about its long-term durability remain an important issue. The aim of this study was to investigate late complications after hybrid arch repair.

METHODS

From January 2002 to December 2017, hybrid arch repair was performed in 65 patients with aortic arch disease (median age, 66.1 years; range, 41-86 years). Hybrid arch repair was defined as debranching involving at least one supra-aortic vessel bypass and simultaneous or staged endovascular thoracic stent grafting. We retrospectively analyzed late complications including reintervention, open conversion, and aortic-related death. The median follow-up period was 60.1 months (range, 1-170 months).

RESULTS

The in-hospital mortality rate was 6% (4/65). Except for early death (n = 4) and early open conversion (n = 2), late complications were observed in 25 patients (25/59 [42%]). The median time interval between the initial procedure and late complication was 36.6 months (range, 1-92 months). Late complications included delayed type I endoleak (n = 8), distal stent-induced new entry (n = 3), stent migration (n = 3), retrograde type A dissection (n = 2), aortopulmonary fistula (n = 2), aortoesophageal fistula (n = 1), stent fracture (n = 1), infection (n = 1), and sudden death (n = 4). Six of these patients (10%) underwent late open conversion. The overall survival rates at 3 years and 6 years were 71.1 ± 7.4% and 57.2 ± 11.3%, respectively. The aortic event-free rates at 3 years and 6 years were 52.1 ± 7.3% and 39.4 ± 10.3%, respectively.

CONCLUSIONS

Late complications in hybrid arch repair occurred in a substantial proportion of patients during midterm follow-up. Regardless of zone type, the incidence of late complications was relatively high. This study suggests that timely reintervention and open conversion are important for rescuing patients, but repeated reinterventions and conservative strategies are not recommended. Aggressive management and life-long surveillance after hybrid arch repair are mandatory for better outcomes.

Is intensity-modulated radiotherapy superior to conventional techniques to prevent late ear complications of nasopharyngeal cancer?

PURPOSE

This study analyzed the late ear complications of radiotherapy for nasopharyngeal cancer (NPC) and compared the conventional and intensity-modulated radiotherapy (2D-RT and IMRT, respectively).

METHODS

At 2-21 years after the end of NPC treatment, 104 ears of 52 patients were evaluated with the otoscopic examination, pure tone audiometry test, tympanometry, and subjective complaints by being blinded to the radiotherapy technique.

RESULTS

There were no differences in terms of the pathology of the external, middle or inner ear, air and bone-conduction hearing thresholds, and the air-bone (A-B) gap at 500, 1000, 2000, and 4000 Hz, and tympanometry types between 2D-RT and IMRT groups (p > 0.05). There were positive correlations between the values of A500 and A1000 thresholds; gap 500, 4000, and mean cochlear RT dose (p < 0.05). There were positive correlations between the values of A500, A1000, and A4000 thresholds; gap 500, 1000, 2000, 4000, and maximum cochlear RT dose (p < 0.05).

CONCLUSION

IMRT was not found to be superior to 2D-RT to prevent RT-induced ear complications. The solution of the middle ear problems must be the goal of the strategies for complications treatment.

Long-term survival and late complications of intensity-modulated radiotherapy for recurrent nasopharyngeal carcinoma

BACKGROUND

To evaluate the effectiveness and toxicities of intensity-modulated radiotherapy (IMRT) for locally recurrent nasopharyngeal carcinoma (NPC).

METHODS

One hundred and eighty-four previously irradiated NPC patients with recurrent disease and re-irradiated by IMRT between February 2005 to May 2013 had been reviewed. The disease was re-staged I in 33, II in 27, III in 70 and IV in 54 patients. Seventy-five percent of the patients received cisplatin-based chemotherapy.

RESULTS

The median survival time was 33 months. The 3-year actuarial rates of local recurrence-free survival (LRFS), distant metastases-free survival (DMFS), and overall survival (OS) rates were 85.1, 91.1, and 46.0%, respectively. About 53% of the patients experienced Grade 3-4 late toxicities. Forty-four patients died of massive hemorrhage of the nasopharynx caused by radiation induced mucosal necrosis. Multivariate analysis indicated that chemotherapy and time interval between initial radiotherapy and re-irradiation were independent predictors for DMFS.

CONCLUSION

IMRT is an effective method for patients with locally recurrent NPC. Massive hemorrhage of the nasopharynx is the major sever late complication and also the leading cause of death. Early recurrence is negative factor for DMFS. Combination of chemotherapy can improve DMFS, but not for OS. Optimal salvage treatment strategies focusing on improvement of survival and minimization of late toxicities are warranted.

Late Pancreatic Anastomosis Stricture Following Pancreaticoduodenectomy: a Systematic Review

BACKGROUND

With an increasing postoperative survival and prolonged follow-up, late complications following pancreaticoduodenectomy (PD) have yet to be thoroughly described and analyzed. Among those, pancreatic anastomosis stricture may lead to severe consequences.

METHODS

A systematic review focusing on pancreaticojejunostomy anastomosis (PJA) stricture.

RESULTS

PJA stricture incidence reached 1.4-11.4% with a median time interval of 34 months after PD. No risk factor was identified. PJA stricture repercussions were inconsistent but postprandial abdominal pain and recurrent acute pancreatitis were the most common symptoms, followed by impaired pancreatic function. To confirm diagnosis, secretin-enhanced magnetic resonance cholangiopancreatography (SMRCP) sensitivity reached 56-100%. As impaired pancreatic function is not improved by any procedure, only PJA stricture leading to abdominal pain or acute pancreatitis should be considered for treatment. Endoscopic techniques (mainly ultrasound-assisted "rendezvous") should be proposed prior to surgical repair, with a morbidity, an overall technical and clinical success reaching 16.5-33% and 28.6-100% and 33-100%, respectively. Regarding surgical repair, overall morbidity varied between 14.3 and 33%, with a clinical success reaching 26.1-100%. Finally, total pancreatectomy with islet auto-transplantation should be considered only for pain intractable to medical management and recurrent acute pancreatitis which has failed medical, endoscopic, and traditional surgical management strategies.

CONCLUSION

PJA stricture following PD is a late, unusual, and potentially serious complication. When there is currently no clear consensus, PJA stricture leading to abdominal pain or acute pancreatitis should be considered treatment. With increasing survival after PD, further studies should focus on late complications.

CORE TIP

Stricture of pancraticojejunostomy is a late and potentially serious complication after pancreaticoduodenectomy. Incidence reaches 1.4-11.4% and no risk factor is identified. Symptoms are inconsistent but postprandial abdominal pain, recurrent acute pancreatitis, and impaired pancreatic function are the most frequent. To confirm diagnosis, secretin-enhanced magnetic resonance cholangiopancreatography is the best modality. Only PJA stricture leading to abdominal pain or acute pancreatitis should be considered for treatment. Endoscopic techniques (mainly ultrasound-assisted "rendezvous") should be proposed prior to surgical repair. Finally, total pancreatectomy with islet auto-transplantation should be considered only for pain intractable to medical management and recurrent acute pancreatitis which has failed medical, endoscopic, and traditional surgical management strategies.

Predictive factors affecting the prognosis and late complications of 73 consecutive cases of esophageal atresia at 2 centers

PURPOSE

While the diagnosis and outcomes of esophageal atresia (EA) have improved, associated anomalies, the management of late complications and growth remain major issues. We analyzed factors that affected the prognosis, late complications and growth.

METHODS

We retrospectively reviewed EA patients treated at two centers from 1984 to 2016. Patient characteristics, complications (gastroesophageal reflux [GER], anastomotic stenosis, tracheomalacia, dysphagia) and growth were evaluated.

RESULTS

Seventy-three EA patients were treated (overall survival rate:80.8%). The mean birth weight was 2514 ± 509 g in the surviving group, and 2453 ± 567 g in the fatal group excluded chromosomal abnormality (p = 0.76). Cardiac and chromosomal anomalies significantly affected mortality. Postoperative GER and anastomotic stenosis each occurred in 39% of the patients. Only GER was significantly affected by the Gross classification. The standard deviation (SD) values of the EA patients' growth were all lower than in the normal population. The SD of body weight was significantly lower in patients with extremity anomalies.

CONCLUSIONS

Associated cardiac and chromosomal anomalies significantly affected the prognosis. GER and anastomotic stenosis were the most common late complications. The growth of the surviving cases was insufficient. These factors will help optimize the therapeutic strategies and postoperative management for EA.

Development of a normal tissue complication probability (NTCP) model for radiation-induced hypothyroidism in nasopharyngeal carcinoma patients

BACKGROUND

The objectives of this study were to build a normal tissue complication probability (NTCP) model of radiation-induced hypothyroidism (RHT) for nasopharyngeal carcinoma (NPC) patients and to compare it with other four published NTCP models to evaluate its efficacy.

METHODS

Medical notes of 174 NPC patients after radiotherapy were reviewed. Biochemical hypothyroidism was defined as an elevated level of serum thyroid-stimulating hormone (TSH) value with a normal or decreased level of serum free thyroxine (fT4) after radiotherapy. Logistic regression with leave-one-out cross-validation was performed to establish the NTCP model. Model performance was evaluated and compared by the area under the receiver operating characteristic curve (AUC) in our NPC cohort.

RESULTS

With a median follow-up of 24 months, 39 (22.4%) patients developed biochemical hypothyroidism. Gender, chemotherapy, the percentage thyroid volume receiving more than 50 Gy (V50), and the maximum dose of the pituitary (Pmax) were identified as the most predictive factors for RHT. A NTCP model based on these four parameters were developed. The model comparison was made in our NPC cohort and our NTCP model performed better in RHT prediction than the other four models.

CONCLUSIONS

This study developed a four-variable NTCP model for biochemical hypothyroidism in NPC patients post-radiotherapy. Our NTCP model for RHT presents a high prediction capability.

TRIAL REGISTRATION

This is a retrospective study without registration.

Long-term outcomes of surgery for choledochal cysts: a single-institution study focusing on follow-up and late complications

PURPOSE

The late postoperative complications of choledochal cyst (CC) surgery are serious and include intrahepatic stones and biliary carcinoma; therefore, long-term follow-up is crucial.

METHODS

The subjects of this retrospective study were patients who underwent surgery for CC at Kagoshima University Hospital between April, 1984 and December, 2016. We analyzed the operative results, early and late postoperative complications, and postoperative follow-up rate.

RESULTS

The study population comprised 110 CC patients (male/female: 33/77) with a median age at surgery of 4 years, 3 months (range 12 days-17 years). The patients underwent hepaticoduodenostomy (n = 1; 0.9%) or hepaticojejunostomy (n = 109; 99.1%). Late complications included intrahepatic bile duct (IHBD) dilatation (n = 1; 0.9%), IHBD stones (n = 3; 2.7%), and adhesive ileus (n = 4; 3.6%). There was no incidence of biliary carcinoma in this series. The rates of follow-up at our institute within 10 years of surgery and more than 20 years after surgery were 69.2% (18 of 26) and 14.5% (8 of 55), respectively.

CONCLUSIONS

The follow-up rate after definitive surgery declined with time. Late complications were observed within 20 years, but biliary carcinoma was not observed. The follow-up rate should be increased to detect late complications. Moreover, patient education on long-term follow up is essential to prevent life-threatening events after definitive surgery for CC.

Recurrent esophageal perforation after anterior cervical spine surgery: case report

PURPOSE

Delayed esophageal perforation after anterior cervical discectomy and fusion (ACDF) is an extremely rare cause of infection such as spondylodiscitis. We present a rare case in which a patient had two delayed esophageal perforations occurring 20 and 25 years after ACDF. By sharing our experience of this rare case, we hope to provide new information related to delayed esophageal perforation.

METHODS

We present the case of a 72-year-old patient who underwent ACDF due to cervical spondylosis 25 years ago. Delayed esophageal perforation occurred 20 years postoperatively and healed spontaneously with conservative treatment.

RESULTS

Five years later, a second esophageal perforation occurred, which required surgical intervention and involved recurrent infection.

CONCLUSIONS

We suggest that it is important to consider follow-up in patients with spontaneously healed esophageal perforations. Furthermore, any patient with symptoms subsequent to a spontaneously healed esophageal perforation, even after an interval of several years, should receive a thorough evaluation for possible recurrent esophageal perforation.

Predictive factors of late cholangitis in patients undergoing pancreaticoduodenectomy

Background

Because the survival rate for patients experiencing late complications after pancreaticoduodenectomy (PD) is increasing, late complications should receive as much attention as early complications do.

Methods

Between April 2007 and August 2016, 133 patients underwent PD at our institution. We analyzed their cases to determine the predictors of late cholangitis after PD.

Results

Of the 133 patients, 28 (21.1%) were diagnosed with postoperative cholangitis. A multivariate analysis showed that abnormal postoperative values of alkaline phosphatase were independently associated with postoperative cholangitis (odds ratio, 3.81; 95% confidence interval, 1.519–9.553; P = 0.004). The optimal cut-off value for postoperative alkaline phosphatase calculated from the receiver operating characteristic curve was 410 IU/L (sensitivity, 76.2%; specificity, 67.9%; area under the curve, 0.73). A univariate analysis to identify risk factors showed that pneumobilia was significantly related to a postoperative alkaline phosphatase value ≥ 410 IU/L (P = 0.041).

Conclusion

This study suggests that an alkaline phosphatase level ≥ 410 IU/L is a predictor of late postoperative cholangitis. In addition, pneumobilia is also related to the postoperative alkaline phosphatase level. Therefore, alkaline phosphatase levels should be carefully monitored in patients with postoperative pneumobilia in the late postoperative course.

Altered bone density and stress distribution patterns in long-standing cubitus varus deformity and their effect during early osteoarthritis of the elbow

OBJECTIVE

To quantify the bone density and stress distribution patterns in long-standing cubitus varus and clarify the effects of the deformity on bone density.

DESIGN

We created three-dimensional computed tomography (CT) elbow models from 21 patients with long-standing cubitus varus deformities without advanced osteoarthritis (OA) and assessed the deformity by superimposing the affected humerus onto a mirror-image of the contralateral normal. Elbows were divided into 13 regions before measuring the bone density of each region and comparing the percentage of high-density volume (%HDV) between affected and normal sides. We constructed finite element models and quantitatively analyzed stress distribution.

RESULTS

Average degrees of deformities were 20.1° of varus, 6.4° of extension, and 12.7° of internal rotation. The medial side of the affected humerus and ulna, Anteromedial trochlea (P < 0.001), Medial coronoid (P = 0.004), and Medial olecranon (P = 0.049) had significantly higher %HDVs than their normal counterparts. Conversely, %HDVs on the affected lateral side, Capitellum (P < 0.001), Anterolateral trochlea (P = 0.010), Posterolateral trochlea (P < 0.001), Lateral coronoid (P = 0.007), and Lateral olecranon (P < 0.001) were significantly lower than the normal side. The affected radial head %HDVs at Anterolateral and Posteromedial quadrants were high (P = 0.007) and low (P = 0.007), respectively. The bone density distribution coincided with stress distribution patterns revealed by finite element analysis (FEA), except in the lateral region influenced by forearm rotation.

CONCLUSIONS

Repetitive stress on the medial elbow may alter bone density distribution patterns, probably presenting from early stage of OA.

The efficacy of resection of intrahepatic bile duct stenosis-causing membrane or septum for preventing hepatolithiasis after choledochal cyst excision

BACKGROUND/PURPOSE

We previously found that many patients who developed hepatolithiasis after choledochal cyst excisions had intrahepatic bile duct stenosis (IHBDS). In 1992, we started resection of the membrane or septum which was found at the site of IHBDS during choledochal cyst excisions. Since intrahepatic stones usually take years to form, the efficacy of this procedure has not been proved.

METHODS

The records of patients who had IHBDS-causing membrane or septum and underwent choledochal cyst excision with Roux-Y hepaticojejunostomy between January 1979 and December 2006 were retrospectively analyzed. The patients who underwent surgical treatment for IHBDS-causing membrane or septum were compared with those who did not undergo the procedure.

RESULTS

Sixty-nine patients met the criteria, and seven patients who were followed up for less than 5years were excluded from the study. Thirty-three patients underwent surgical treatment for IHBDS, and three of them developed intrahepatic stones. Meanwhile, 10 of 29 patients who did not undergo the procedure developed intrahepatic stones. A statistically significant difference in intrahepatic stone formation was observed between the two groups in a log-rank test (P=0.016).

CONCLUSIONS

Meticulous probing and excision of the IHBDS-causing membrane or septum are effective for preventing hepatolithiasis after choledochal cyst excisions.

TYPE OF STUDY

Retrospective Comparative Study.

LEVEL OF EVIDENCE

Level III.

Endoscopic shielding technique, a new method in therapeutic endoscopy

Prevention of late complications after large endoscopic resection is inefficient with current methods. Endoscopic shielding, as a simple and safe technique, has been proposed to improve the incidence of these events. Different methods, sheets or hydrogels, have showed proven efficacy in the prevention of late bleeding and perforation, as well as the improvement of tissue repair, in experimental models and in clinical practice.

Fistula formation following repair of a pseudoaneurysm of the mitral-aortic intervalvular fibrosa - A rare complication

The mitral-aortic intervalvular fibrosa is an avascular fibrous structure connecting the mitral and aortic annuli that is prone to pseudoaneurysm formation. Pseudoaneurysm of the mitral-aortic intervalvular fibrosa is a known complication of many conditions such as infective endocarditis and valvular surgery. It requires surgical correction. Its long-term consequences are little known. We present in this report the case of a 62-year-old male with history of pseudoaneurysm of the mitral-aortic intervalvular fibrosa repair and redo mitral and aortic prosthetic valve replacements. After five years of asymptomatic follow-up, the patient presented with sudden-onset heart failure. Echocardiographic investigation demonstrated two aorto-atrial fistulae at the site of his previous repair and adequate function of both prosthetic valves. The fistulae were repaired and the prosthetic valves were left in place. This represents a potential late surgical complication of pseudoaneurysm of the mitral-aortic intervalvular fibrosa. <Learning Objectives: This case report describes a rare complication occurring many years after the repair of a pseudoaneurysm of the mitral-aortic intervalvular fibrosa. Surgical and follow-up history is discussed to familiarize clinicians with this atypical presentation type.>.

Gallstone-related abdominal cystic mass presenting 6 years after laparoscopic cholecystectomy: A case report

INTRODUCTION

Although gallbladder perforation and gallstones spillage are common complications during laparoscopic cholecystectomy (LC), clinically significant complications resulting from stones left in the peritoneum are extremely uncommon. We report a rare case of spilled gallstones complication with a late and uncharacteristic presentation.

PRESENTATION OF THE CASE

A 44-year-old Caucasian female presented with a complaint of a mass in the right upper quadrant associated with a cramping pain for the last 6 months. Her past surgical history included a laparoscopic cholecystectomy performed six years ago. Abdominal computed tomography demonstrated an intra-abdominal cystic mass. On open exploration, a cystic mass adhered to the abdominal wall was excised containing two gallstones. The patient tolerated the procedure well and had uneventful postoperative recovery.

DISCUSSION

Although unretrieved gallstones are considered harmless, serious complications can occur early or late. The most frequent complication is the formation of abscesses in different locations.

CONCLUSION

The diagnosis of gallstone abscess after years of LC is usually a diagnostic challenge. Obtaining a comprehensive past surgical history still plays an important role in the assessment of patients presenting with unusual findings.

Chronic Expanding Hematoma Following Abdominoplasty

Chronic expanding hematoma (CEH) is a relatively rare complication of trauma or surgery. We report a patient with CEH as a late complication of abdominoplasty. A 58-year-old woman underwent conventional abdominoplasty and thereafter refused to use a compression binder, citing discomfort. One month postoperatively, she presented with a gradually enlarging, painful abdominal mass. The results of ultrasonography and computed tomography were highly suspicious for CEH. The lesion was completely removed, together with surrounding fibrous tissue. Histopathology revealed a chronic hemorrhage collection with a fibrous capsule, consistent with CEH. This condition as a late complication of abdominoplasty has not previously been reported in the literature. However, an online medical consultation site features several abdominoplasty patients asking about persistent hematomas that sound suspicious for CEH. CEH might be underdiagnosed by surgeons. Although a postoperative binder may increase the risk of skin necrosis and deep vein thrombosis, appropriate compression treatment is necessary to prevent hematoma formation. Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Acquired aortocameral fistula occurring late after infective endocarditis: An emblematic case and review of 38 reported cases

AIM

To delineate the features and current therapeutic option of congenital and acquired aortocameral fistulas (ACF) secondary to iatrogenic or infectious disorders.

METHODS

From a PubMed search using the term "aortocameral fistula", 30 suitable papers for the current review were retrieved. Reviews, case series and case reports published in English were considered. Abstracts and reports from scientific meetings were not included. A total of 38 reviewed subjects were collected and analyzed. In addition, another case - an adult male who presented with ACF between commissures of the right and non-coronary sinuses and right atrium as a late complication of Staphylococcus aureus infective endocarditis of the AV - is added, the world literature is briefly reviewed.

RESULTS

A total of thirty-eight subjects producing 39 fistulas were reviewed, analyzed and stratified into either congenital (47%) or acquired (53%) according to their etiology. Of all subjects, 11% were asymptomatic and 89% were symptomatic with dyspnea (21 ×) as the most common presentation. Diagnosis was established by a multidiagnostic approach in 23 (60%), single method in 14 (37%) (echocardiography in 12 and catheterization in 2), and at autopsy in 2 (3%) of the subjects. Treatment options included percutaneous transcatheter closure in 12 (30%) with the deployment of the Amplatzer duct or septal occluder and Gianturco coil and surgical correction in 24 (63%).

CONCLUSION

Acquired ACF is an infrequent entity which may occur late after an episode of endocarditis of the native AV. The management of ACF is generally by surgical correction but non-surgical device intervention has recently been introduced as a safe alternative.

Differentiation of severe bilateral panuveitis following phacoemulsification: a case report

BACKGROUND

Cataract surgery typically offers instant visual rehabilitation with rare postoperative complications. However, if complications occur, these complications may be confusing and threatening. We present a case of severe bilateral panuveitis following phacoemulsification and intraocular lens implantation and discuss the importance of a correct diagnosis and management.

CASE PRESENTATION

A 75-year-old Asian male with bilateral phacoemulsification and intraocular lens implantation developed severe inflammation with sharp vision loss in both eyes after the surgeries. Physical examination indicated bilateral panuveitis. With a presumptive diagnosis of suppurative endophthalmitis and a history of effective treatment with intravenous antibiotics plus ofloxacin and steroid drops, intravenous ceftazidime and vancomycin were administered. However, the effects were minimal. With a supplemental history of recurrent oral, perineal, and gastrointestinal ulcers, a diagnosis of Behcet's disease was made, and systemic immune inhibitors were prescribed instead of invasive treatments, which might exacerbate the condition. After 5 days of medication, the inflammation was markedly relieved, and no recurrence was observed 2 weeks later.

CONCLUSION

Correct differentiation of confusing conditions is crucial to implement appropriate management. Postoperative complications of cataract surgery should be differentiated carefully, and perioperative management in patients with autoimmune uveitis should be provided with caution.

Medial subclavicular musculotendinous complex and insulation break: Rare cause of late pacemaker lead malfunction

Insulation break in a permanent pacemaker lead is a rare long-term complication. We describe an elderly male with a VVIR pacemaker, who presented with an episode of presyncope more than 3 years after the initial implantation procedure, attributed to insulation break possibly caused by lead entrapment in components of the medial subclavicular musculotendinous complex (MSMC) and repeated compressive damage over time during ipsilateral arm movement requiring lead replacement. The differential diagnosis of a clinical presentation when pacing stimuli are present with failure to capture and the role of the MSMC in causing lead damage late after implantation are discussed.

Huge saphenous vein graft aneurysm presenting as non-ST elevation myocardial infarction and compressing the heart

Coronary artery bypass grafting (CABG) surgery maintains an important role in the treatment of coronary artery disease. The huge saphenous vein graft aneurysm (HSVGA) is rare and occurs as a late complication after CABG. Here, we reported a case of HSVGA presenting as non-ST elevation myocardial infarction.

Results of extracardiac conduit total cavopulmonary connection in 500 patients

OBJECTIVES

This single-institution study aimed to evaluate the early to mid-term outcomes of extracardiac conduit total cavopulmonary connection (EC-TCPC).

METHODS

Between March 1994 and March 2014, 500 patients (median age, 3.4 years) underwent EC-TCPC at our hospital. One hundred and twenty-three patients (24.6%) showed heterotaxy, and fenestration was created in 6 patients (1.2%). The standard institutional treatment policy included postoperative anticoagulation and individualized cardiovascular medication. The mortality and morbidity rates, haemodynamic status, cardiopulmonary exercise capacity and liver examination results during the follow-up period (median, 6.7 years) were retrospectively reviewed.

RESULTS

There were 2 early and 17 late deaths. The Kaplan-Meier estimated survival rate was 96.2% at 10 years and 92.8% at 15 years. Bradyarrhythmia and tachyarrhythmia occurred in 19 and 13 patients, respectively. Other late-occurring morbidities included protein-losing enteropathy in 8, thromboembolism in 5, bleeding complications in 6 and liver cirrhosis in 1 patient. The rate of freedom from late-occurring morbidities was 82.1% at 15 years. In the multivariate analysis, heterotaxy was found to be a predictor for mortality (P = 0.02), whereas age at operation was a predictor for new-onset arrhythmias (P = 0.048). In the cardiopulmonary exercise test (n = 312), the peak VO2 was 84.9 ± 17.3% of the predicted value, which tended to decrease with age (R(2) = 0.32) and elapsed time since operation (R(2) = 0.21). Postoperative cardiac catheterization (n = 468; time from surgery, 3.6 ± 4.3 years) showed central venous pressure of 9.9 ± 2.4 mmHg, ventricular end-diastolic pressure of 5.2 ± 3.3 mmHg, cardiac index of 3.4 ± 0.8 l/min/m(2) and arterial oxygen saturation of 94.2 ± 4.8%. In 101 patients who were followed up for ≥10 years, amino-terminal type III procollagen peptide and collagen type IV levels exceeded the normal ranges in 52.9 and 75.2% of patients, respectively, and liver ultrasonography revealed hyper-echoic spots in 43.3% of patients.

CONCLUSIONS

The early to mid-term outcomes of post-EC-TCPC patients managed with individualized pharmacotherapy were excellent, with low mortality and morbidity rates; however, development of late-occurring morbidities specific to Fontan physiology, including exercise intolerance and liver disease, must be carefully monitored during the long-term follow-up.

Late infection from anterior cervical discectomy and fusion after twenty years

Anterior cervical discectomy and fusion (ACDF) has been performed for degenerative and traumatic cervical diseases to improve pain and neurologic symptoms including sensory change and motor weakness. Infection, however, is a rare complication of ACDF, and late infection is even much rarer. We present a case of late Infection from ACDF C4-5 using Biocompatible Osteoconductive Polymer (BOP) after twenty years in the absence of an esophageal perforation, Zenker's diverticulum, or recent surgery or bacteremia. Late infection from ACDF after 20 years is extremely rare in the literature. However, possibility of such a late complication should be appreciated during the follow-up period and surgical resection will be required for proper treatment.

Late Complications and Stone Recurrence Rates after Bile Duct Stone Removal by Endoscopic Sphincterotomy and Large Balloon Dilation are Similar to Those after Endoscopic Sphincterotomy Alone

Background/Aims

Between endoscopic sphincterotomy (ES) alone and combined endoscopic sphincterotomy and large balloon dilation (ES-LBD) groups, efficacy and long-term complications, difference in biliary stone recurrence rate, and risk factors of stone recurrence were compared.

Methods

Medical records of 222 patients who underwent ERCP for biliary stone removal were retrospectively reviewed. Patients with dilated CBD ≥11 mm and follow-up longer than 6 months were included.

Results

There were 101 patients in ES-LBD group and 121 patients in ES group. Mean follow-up duration was 25.0 (6-48) months and 13.0 (6-43) months, respectively (p=0.001). There was no difference in number of ERCP sessions, brown pigment stones, angle between mid and distal common bile duct (CBD angle) <135°, and lithotripsy rate. Complete retrieval success rate was excellent in both groups (100% vs. 99%). Early complication rate of ES-LBD and ES alone group was 4 and 4.1%, respectively (p=1.000). One patient in ES-LBD group died from delayed bleeding. Late complication rate was 5.9 and 3.3%, respectively (p=1.000). Stone recurrence rate was 6.9% and 5.8%, respectively (p=0.984). The only Independent risk factor of stone recurrence was presence of periampullary diverticulum.

Conclusions

Late complication and stone recurrence rates were similar between ES-LBD and ES alone groups.

Sick sinus syndrome as a late complication after ventricular septal defect surgery

Ventricular septal defect is a common congenital heart disease for which patch closure technique using cardiopulmonary bypass has been applied for a few decades, resulting in a low incidence of perioperative complications. We report a 26-year-old woman with bradycardia of 25-30 beats per minute, which was considered to be a late-onset complication of surgical closure of an isolated ventricular septal defect performed 21 years earlier. She has been stable for more than 9 months without an implanted pacemaker, although her heart rate was always around 40 beats per minute in scheduled follow-up visits. <Learning objective: We experienced a 26-year-old woman with bradycardia of 25-30 beats per minute, which was considered to be a late-onset complication of surgical closure of an isolated ventricular septal defect performed 21 years earlier. Our case highlights the importance of close follow-up for patients who underwent successful surgical closure of a ventricular septal defect and have shown nonsignificant bradycardia, even though they have no symptoms.>.

Lower eyelid swelling as a late complication of Bio-Alcamid filler into the malar area

PURPOSE

To report the late complications associated with permanent filler injections into the malar area for rejuvenation.

METHODS

A retrospective case series of three patients who presented with lower eyelid swelling several years following injection of polyalkylimide (Bio-Alcamid) into the malar area.

RESULTS

All patients presented with lower eyelid swelling which developed as a result of spontaneous migration of filler to the lower eyelid. Iatrogenic migration of the filler from the lower eyelid following a trial to remove resulted in an abscess formation which further complicated the removal.

CONCLUSIONS

Lower eyelid swelling may be one of the late complications associated with the permanent fillers into the malar area. An attempt at removal of filler by aspiration or bimanual expression may result in late migration of the product and the development of eyelid swelling.

Huge extrahepatic portal vein aneurysm as a late complication of liver transplantation

A 60-year-old male underwent orthotopic liver transplantation because of hepatitis C virus related cirrhosis. After 12 d, the patient underwent re-transplantation due to primary graft non function. One year later the patient developed a thrombosis of the main portal vein needing a surgical revision. After 11 years the patient was operated on because of a clinical picture of intestinal occlusion. As an incidental finding, a large aneurysm of the main portal vein was diagnosed. The incidence of intra- and extrahepatic Portal vein aneurysms (PVAs) is not clear. To the best of our knowledge, only one case of intrahepatic PVA in a liver transplant has been reported in the literature. In addition, we have found no documented cases of extrahepatic PVAs in liver transplanted patients.

Development of 'De novo' Aneurysm after Therapeutic Carotid Occlusion

Carotid occlusion is an inevitable therapeutic modality for the treatment of complex aneurysms such as giant, traumatic, and intracavernous aneurysms. Late complications of carotid occlusion include 'de novo' aneurysm formation at a distant site because of hemodynamic changes in the circle of Willis. We report a case of de novo aneurysm in a vessel that appeared to be normal on initial angiography. The patient developed an anterior communicating artery aneurysm and marked growth of a basilar bifurcation aneurysm 9 years after trapping of the left internal carotid artery for the treatment of a ruptured large saccular aneurysm involving ophthalmic and cavernous segments. We propose that patients who undergo therapeutic carotid occlusion should be periodically followed by magnetic resonance angiography or computed tomographic angiography to evaluate the possibility of de novo aneurysm formation; this advice is in line with previous reports.