Octreotide and chylothorax

Chylothorax in thoracic oncology: diagnostic challenges and management strategies

Chylothorax is a distinctive form of pleural effusion characterized by the accumulation of chyle within the pleural space. We conducted an analysis of published evidence concerning oncological chylothorax, encompassing complications following thoracic surgery or spontaneous occurrences directly linked to thoracic malignancies. Diagnosis can be established based on clinical features of the pleural effusion and through analysis of pleural fluid. The presence of chylomicrons, measured by lipoprotein electrophoresis, triglyceride levels, and cholesterol content are indicative factors. In cases of spontaneous chylothorax, the identification of pleural effusion on CT scans showing suspicious oncological masses, such as lymphomas, prompts pleural drainage for confirmation of chylothorax. Conversely, post-surgical chylothorax diagnoses are immediate due to the pre-existing pleural drainage. In our last 10 years of experience, we have had only 18 cases of chylothorax: 28% underwent successful redo-surgery and 72% were conservatively treated. All the patients recovered well, and none experienced life-threatening situations. Conservative approaches involve hypo/alipidic diets, total parenteral nutrition, and pharmacological interventions. In persistent and challenging cases of chylothorax where drainage output is excessive, redo-surgery is recommended.

Post-Traumatic Chylous Wrist Effusion: A Case Report

Chylous joint effusion is a rare condition characterized by the presence of a milky, viscous synovial fluid with abnormal lipid concentrations. The thorax is the most common site of involvement. Only a handful of cases have been reported in the field of orthopedic surgery and even fewer have been reported involving uncommon locations such as the knee. Treatment of chylous joint effusion may require surgical intervention along with the use of somatostatin or octreotide and a low-fat diet. We present herein a case of post-traumatic chylous effusion in the wrist treated with surgical incision and drainage, octreotide, and a low-fat diet. There have been few reports of chylous effusion in the knee; however, to our knowledge, this is the first report of post-traumatic chylous effusion in the wrist.

[Chylothorax]

Chylothorax is a serious and potentially life-threatening condition of diverse etiology. This article provides a detailed overview of anatomy, physiology, etiology, diagnosis, and therapeutic options in the context of chylothorax.

Recurrent bilateral idiopathic chylothorax: a therapeutic challenge

Chylothorax is a rare condition caused by pleural effusion resulting from thoracic duct injury. Recurrent chylothorax is often resistant to conservative treatment and presents a clinical conundrum in its management. Here, we report a compelling case of recurrent chylothorax that persisted despite the administration of total parenteral nutrition, octreotide and thoracic duct embolisation. The patient eventually required thoracic duct ligation and talc pleurodesis, which resulted in the resolution of the effusion. Our case is an illustrative example of the effective multidisciplinary management of recurrent bilateral idiopathic chylothorax.

Cough-induced chylothorax in a two-year-old boy - case report and review of the literature

BACKGROUND

Chylothorax is a very rare form of pleural effusion in children, especially after the neonatal period, and predominantly occurs secondary to cardiothoracic surgery. It can lead to significant respiratory distress, immunodeficiency, and malnutrition. Effective treatment strategies are therefore required to reduce morbidity.

CASE PRESENTATION

A previously healthy two-year old boy was admitted with history of heavy coughing followed by progressive dyspnea. The chest X-ray showed an extensive opacification of the right lung. Ultrasound studies revealed a large pleural effusion of the right hemithorax. Pleural fluid analysis delivered the unusual diagnosis of chylothorax, most likely induced by preceded excessive coughing. After an unsuccessful treatment attempt with a fat-free diet and continuous pleural drainage for two weeks, therapy with octreotide was initiated. This led to complete and permanent resolution of his pleural effusion within 15 days, without any side effects.

CONCLUSIONS

Severe cough may be a rare cause of chylothorax in young children. Octreotide seems to be an effective and safe treatment of spontaneous or traumatic chylothorax in children. There is, however, a lack of comprehensive studies for chylothorax in children and many issues concerning diagnostic strategies and treatment algorithms remain.

Chylothorax: A Late Complication of Disseminated Mycobacterium avium Complex (MAC) Infection

Chylothorax is a rare cause of pleural effusion and occurs due to leakage of chyle into the pleural space. In most cases, it results from trauma, with malignancy accounting for most of the non-traumatic causes. Chylothorax resulting from immune reconstitution inflammatory syndrome (IRIS), during treatment of Mycobacterium avium complex (MAC) infection, is an extremely infrequent cause of chylothorax, with only a handful of cases reported in the literature.

Multidisciplinary Management of Chylothorax

Chylothorax, the accumulation of chyle in the pleural space, is usually caused by the disruption of the thoracic duct or its tributaries. Etiologies are broadly divided into traumatic, including postsurgical, and nontraumatic, most commonly in the setting of malignancy. The management of chylothorax largely depends on the cause and includes dietary modification and drainage of the pleural space. A definitive intervention, whether surgical or a percutaneous lymphatic intervention, should be considered in patients with a persistently high volume of chylous output and in those with a prolonged leak, before complications such as malnutrition ensue. No methodologically robust clinical trials guiding management are currently available. In this article, we review the current literature and propose a stepwise, evidence-based multidisciplinary approach to the management of patients with both traumatic and nontraumatic chylothorax.

Role of Octreotide in Conservative Management of Chyle Leak Post Neck Dissection in Cases of Head Neck Cancer: A Retrospective Analysis

Chyle leak is a dreadful complication in patients undergoing neck dissections. Octreotide has been used in the management of chyle leak post neck dissections in head and neck cancer patients. Currently there is no consensus and practice guidelines on the same. (1) To study the role of octreotide in early cessation of post neck dissection chyle leak. (2) To study incidence of intra-operative and post-operative CL, its relation to the extent of nodal disease and neck dissection, prior radiotherapy. Retrospective analysis of 16 patients out of 529 neck dissection over a period of 03 years between Jan 2016 and Dec 2019 who developed post-operative chyle leak. All patients who had post-operative chyle leak were administered octreotide. Time taken for chyle leak to stop was primary outcome. Secondary outcomes were duration of hospitalization post-operatively, incidence of intra-operative and post-operative chyle leak, its relation to the extent of nodal disease, prior radiotherapy and type of neck dissection. 59 of 529 neck dissections (11.15%) were noted to have intra-operative chyle leak. 16 of 529 neck dissections (3.02%) developed post-operative chyle leak. On applying chi square test, prior multimodality and N plus neck were found to be significant risk factors in developing postoperative chyle leak. Considering only RT versus no RT in prior multimodality treated group, the difference was insignificant. Onset of chyle leak varied from 1 to 5 post-op day (mean 2.68 days). 15 (93.75%) patients responded to octreotide. Chyle leak resolved between 3 and 10 days (mean 5.18 days) and octreotide was given for 5-12 days (mean-7.18 days). Overall duration of hospitalization ranged from 09 to 18 days (mean 12.18 days). 01 patient (6.25%) had to be re-explored due to high volume leak despite using octreotide. Adverse effects of octreotide were minimal and tolerable. Octreotide is effective in reducing the duration of chyle leak, hospital stay and need for surgical intervention. It may be considered as suitable adjunct to conservative measures in the management for post-operative chyle leak.

Spontaneous closure of a metachronous brochopleural fistula after omentoplasty for a preceding fistula: Case report

Introduction

A bronchopleural fistula (BPF) after an anatomical lung resection commonly arises singly. We report a case of a metachronous BPF, which developed after omentoplasty of a preceding fistula and subsequently closed without any intervention.

Case presentation

A 77-year-old patient underwent omentoplasty for a brochopleural fistula (BPF) following a right lower lobectomy. A sudden massive air leak developed from the novel BPF approximately 1 cm proximal to the preceding fistula 3 days later. The air leak resolved spontaneously without any intervention one week later. The corresponding fistula was found to be completely closed. Computed tomography showed the omental flap covered both fistulae.

Conclusion

The present case suggested that a metachronous BPF could develop and a harvested omental flap might migrate even after being anchored.

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A metachronous bronchopleural fistula (BPF) developed 3 days after an omentoplasty for a preceding fistula following a right lower lobectomy.

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The BPF was closed spontaneously without any subsequent intervention and a computed tomography revealed that the omental flap covered both fistulae.

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A metachronous BPF could develop and a harvested omental flap might migrate even after being anchored.

Paediatric acute respiratory distress syndrome: consider the role of lymphatics

We present a case of a 7-day-old male infant with severe respiratory disease requiring venoarterial extracorporeal membrane oxygenation therapy with evidence of lymphangiectasia on lung biopsy. Differentiating primary versus secondary lymphangiectasis in this patient remains a riddle despite extensive investigations including an infective screen, lung biopsy and whole-genome sequencing. In addition to the standard therapies used in paediatric acute respiratory distress syndrome, such as lung-protective ventilation, permissive hypoxaemia and hypercarbia, nursing in the prone position, early use of muscle relaxants, rescue intravenous corticosteroids and broad-spectrum antibiotics, the patient was also given octreotide despite the absence of a chylothorax based on the theoretical benefit of altering the lymphatic flow. His case raises an interesting discussion around the role of lymphatics in the pathophysiology of paediatric and adult respiratory distress syndrome and prompts the exploration of novel agents which may affect lymphatic vessels used as an adjunctive therapy.

Non-traumatic chylothorax: diagnostic and therapeutic strategies

Non-traumatic chylothorax refers to accumulation of chyle in the pleural space in the absence of any traumatic disruption to the thoracic duct. Chyle originates from the intestines and is transported via the thoracic duct into systemic circulation. The anatomical course of the thoracic duct is complex with considerable variation; therefore, development of chylothorax is dependent on the site and level of the thoracic duct defect. Non-traumatic chylothorax is associated with a wide range of medical disorders, but malignancy accounts for three-quarters of cases. In up to 9% of cases, the aetiology remains unknown (termed idiopathic chylothorax). Gross appearance of pleural fluid is neither sensitive nor specific enough to diagnose chylothorax; therefore, biochemical analysis of the pleural fluid is required. Pleural fluid triglyceride level >1.24 mmol·L⁻¹ (110 mg·dL⁻¹) with a cholesterol level <5.18 mmol·L⁻¹ (200 mg·dL⁻¹) is diagnostic of chylothorax. In borderline cases, lipoprotein electrophoresis can help confirm the diagnosis by detecting chylomicrons in the pleural fluid.

Once the diagnosis of chylothorax is confirmed, the next step is to find the cause and identify the leakage point, for which various lymphatic specific radiological investigations may have an important role. There is paucity of data on the most suitable approach to manage non-traumatic chylothoraces and treatment often depends on the underlying cause. In general, conservative treatment is tried first, usually for a limited time, before considering more invasive measures. A multidisciplinary approach is recommended with close liaison among the respiratory physicians, thoracic surgeons, oncologists, interventional radiologists, dietitians and pharmacists.

Non-traumatic chylothorax is associated with a myriad of medical disorders. Lipid analysis of pleural fluid is required to confirm the diagnosis. A multidisciplinary approach is recommended for the effective management of non-traumatic chylothorax. https://bit.ly/3Nssb7n

The utility of gallium-68 DOTATOC PET/CT in lymphangioleiomyomatosis

Somatostatin receptor functional imaging is of limited utility as an imaging biomarker in LAM, but other PET/CT modalities may be of use https://bit.ly/3l6BVZp.

Chylothorax Due to Superior Vena Cava Obstruction in a Patient With Complex Congenital Heart Disease

Obstruction of the superior vena cava represents an under-recognized cause of chylothorax in the adult population. Our case report describes the successful conservative management of chylothorax due to bilateral superior vena cava obstruction in an adult patient with complex congenital heart disease. (Level of Difficulty: Beginner.)

Refractory IgG4-related Pleural Disease with Chylothorax: A Case Report and Literature Review

We herein report a rare case of a 66-year-old man with refractory chylothorax. Although he had been treated with moderate doses of prednisolone (PSL) on suspicion of pleuritis with Sjögren syndrome, the pleural effusion expanded after the reduction of PSL. Further workup including histopathological examinations of pleura led to the diagnosis of IgG4-RD with bilateral chylothorax without any leakage from the thoracic duct. Combination therapy with high-dose PSL plus rituximab successfully decreased the pleural effusion. This is a very rare case of IgG4-related pleuritis with chylothorax and the first report of its successful treatment with rituximab.

Management of Chylous Ascites After Laparoscopic Nephrectomy for Living Kidney Donor: A Case Report and Literature Review

Kidney transplant is currently the elective treatment of choice for end-stage renal disease. Laparoscopic living donor nephrectomy (LLDN) has substantial advantages over open nephrectomy. Chylous ascites (CA) is a rare surgical complication after the LLDN; there are few reports in the literature. We present a case report of a 58-year-old woman who started CA on the 21st day post operation. The recommended initial therapeutic approach to suspend the fat in the diet and place percutaneous drainage was not enough. It was decided to jointly introduce fasting and total parenteral nutrition with the administration of octreotide, resolving the complication completely in 15 days with no need for the patient to undergo surgery. The conservative management, during the first 4 to 8 weeks after the diagnosis is the best option. Surgery is generally recommended if conservative management fails. The prevalence of CA varied between 0% and 6.2% of LLDNs. In our experience of 87 LLDNs, we only presented 1.15% for this complication. There are 62 cases reported in the international literature. The mean presentation was 14 days after LLDN. All patients underwent conservative treatment, and only 15 patients (24%) went to surgery after the failure of conservative management. It would be highly useful, considering the disparity of the prevalence, if the bibliographic reports detail what hemostatic and sealing techniques are used in an LLDN. In this way it would be possible to identify which factor affects a complication like this one.

Recurrent non-traumatic idiopathic chylothorax: a diagnostic dilemma with therapeutic challenge

Chylothorax is an uncommon pleural effusion characterized by the presence of chyle in the pleural space. Malignancy, trauma, and infections such as tuberculosis and filariasis can result in chylothorax. The chyle is an odourless and white liquid; however, around 50% of chylothorax is not milky (serosanguineous) and 10% of chylothorax is idiopathic which can pose a diagnostic dilemma. We propose a systematic approach which includes pleural fluid triglycerides and cholesterol for all undiagnosed pleural effusion. The case highlights the diagnostic dilemma as well as therapeutic challenges.

Management options for post-esophagectomy chylothorax

Chylothorax, although an uncommon complication of esophagectomy, is associated with high morbidity and mortality if not treated promptly. Consequently, knowledge of the thoracic duct (TD) anatomy is essential to prevent its inadvertent injury during surgery. If the TD is injured, early diagnosis and immediate intervention are of paramount importance; however, there is still no universal consensus about the management of post-operative chylothorax. With increasing advances in the spheres of interventional radiology and minimally invasive surgery, there are now several options for managing TD injury. We review this topic in detail to provide a comprehensive and practical overview to help surgeons manage this challenging complication. In particular, we discuss an appropriate step-up approach to prevent the morbidity associated with open surgery as well as the metabolic, nutritional, and immunological disorders that accompany a prolonged illness.

Propranolol for the Treatment of Lymphatic Malformations in a Neonate - A Case Report and Review of Literature

Lymphatic malformations in neonates often manifest as a chylothorax, and although rare, morbidity and mortality can be significant. First-line treatment with medium-chain triglyceride-enriched formulas, or enteric rest with total parenteral nutrition, are not always successful. We describe the case of a premature neonate with trisomy 21 who presented with bilateral pleural effusions and a pericardial effusion that worsened with the initiation of enteral nutrition. Clinical improvement was not seen until the initiation of treatment with oral propranolol at a maximum dosage of 0.5 mg/kg/day divided every 8 hours with extubation 8 days after propranolol initiation. Two case reports have described the use of propranolol in similar patients receiving 2 mg/kg/day; however, our experience is the first to report treatment success at a much lower dose. A review of the literature for alternative medication treatments uncovered numerous case reports and series documenting variable results with incongruent definitions of treatment success in a diverse patient population. The rarity of this disease state makes accrual of patients difficult and more robust treatment data unlikely. Therefore, selection of the optimal adjunctive treatment must be based on individual patient and disease state characteristics as well as safety and efficacy profile of the medication.

Chylothorax as a complication of extensive spontaneous left arm DVT

We present a case of right sided chylothorax in the setting of cirrhosis believed to be secondary to extensive venous thromboembolism of the left upper extremity and exacerbated by chylous ascites. Our patient responded to conservative management with anticoagulation and a repeat thoracentesis revealed transformation of the fluid back to straw coloured transudate. We also include a brief discussion of the diagnosis and management of chylothorax.

Clinical approach and review of causes of a chylothorax

A chylothorax, also known as chylous pleural effusion, is an uncommon cause of pleural effusion with a wide differential diagnosis characterized by the accumulation of bacteriostatic chyle in the pleural space. The pleural fluid will have either or both triglycerides >110 mg/dL and the presence of chylomicrons. It may be encountered following a surgical intervention, usually in the chest, or underlying disease process. Management of a chylothorax requires a multidisciplinary approach employing medical therapy and possibly surgical intervention for post-operative patients and patients who have failed medical therapy. In this review, we aim to discuss the anatomy, fluid characteristics, etiology, and approach to the diagnosis of a chylothorax.

A transudative chylothorax associated with superior vena cava syndrome

The chylothorax is a lymphocyte predominant protein-discordant exudative pleural effusions with low lactate dehydrogenase and elevated triglyceride levels. Transudative chylothoraces associated with Superior Cava syndrome (SVC) are an extremely rare clinical entity. In this manuscript, we describe a case of transudative chylothorax due to SVC obstruction secondary to thrombosis of a peripheral inserted central venous catheter, which ultimately resolved after endovascular intervention. In our review of the literature, only five cases of transudative chylothorax associated with SVC syndrome were identified with 60% of cases associated with thrombosis and complications due to catheters in the central venous circulation. Treatment of the underlying cause is key to resolution of the chylothorax. Thoracentesis is an initial intervention for diagnostic and therapeutic purposes. Endovascular intervention is the primary mode of treatment for SVC thrombosis and stenting is preferred for malignant causes, however anticoagulation alone has been reported in the resolution of chylothorax. In patients with recurrent chylothorax despite of relief of SVC obstruction, a medium-chain triglyceride diet and octreotide can be prescribed in order to decrease the chyle flow in the thoracic duct. Surgical ligation of the thoracic duct can be considered if medical management and endovascular treatment fails.

Chylous Cardiac Tamponade with Chylothoraces Secondary to Hodgkin's Lymphoma: Octreotide in Conjuncture with Standard of Care Dietary Fat Restriction

Chylous effusions are a well-known complication from a variety of etiologies including trauma, malignancies, and anatomic defects, with the most common location being in the pleural space. A pericardial chylous effusion (chylopericardium) is uncommon, and a chylopericardium with concomitant bilateral chylous pleural effusions (chylothoraces) has only been reported in less than a handful of case reports. Our patient presented with bilateral chylothoraces and a chylopericardium with tamponade physiology secondary to Hodgkin's Lymphoma. In this article, we discuss our treatment of this patient with the somatostatin analogue octreotide, as well as the standard of care dietary fat restriction, in order to control these effusions until the patient's chemotherapy took effect.

Refractory chyle leakage after laparoscopic cholecystectomy for gallstone disease: A case report and literature review

RATIONALE

Gallstone disease is commonly worldwide and safely treated by laparoscopic cholecystectomy. Chylous ascites is a rare but serious complication of many abdominal operations.

PATIENT CONCERNS

We present a rare case of refractory chyle leakage post-LC for acute cholecystitis that is successfully treated in a 40-year-old man, and review current literature on the prevalence, diagnosis, and management of this complication.

DIAGNOSES

Refractory chyle leakage post-LC, a rare but serious complication after laparoscopic cholecystectomy.

INTERVENTIONS

Conservative treatment was given initially; however, the outcome was frustrating. Surgical intervention was given without further delay.

OUTCOMES

After the reoperation, conservative treatment was still maintained. After nearly 8 months of treatment, the patient recovered and then was discharged.

LESSONS

This case represents a previously unreported complication of refractory and high flow chyle leakage after laparoscopic cholecystectomy, which did not improve alter conservative management with dietary changes and other measures. So we suggest that surgical intervention should be given for refractory cases without further delay. It can not only shorten the disease progression, but also alleviate the sufferings of the patient.

A 44-year-old, Caucasian, male nonsmoker with worsening difficulty in breathing and decreased exercise tolerance

Can you diagnose this patient and identify the uncommon cause of his illness? http://ow.ly/t4nX30bzJFz.

Treatment of chylothorax developed after congenital heart disease surgery: a case report

Chylothorax is defined as the accumulation of lymphatic fluid or chyle in the pleural space. Chylothorax treatment is composed of conservative; pleural drainage, termination of enteral feeding, total parenteral nutrition and supplementation with medium- chain triglycerides and surgical therapies; ductus thoracicus ligation, pleuroperitoneal shunts or pleuredesis. Nowadays, for cases among which conservative therapies fail, treatment with octreotide has been reported to be beneficial with promising results. A neonate who developed chylothorax after surgery performed for congenital heart disease was treated successfully with octreotide.

A case of chylothorax in a patient with sarcoidosis: a rare and potentially fatal complication

Obstruction of the thoracic duct may lead to accumulation of a lymphatic fluid rich in triglycerides named chyle. When chyle accumulates in the pleural cavity, it becomes a chylothorax. Malignancy, particularly lymphoma, is the most common cause of chylothorax; however, any pathology leading to obstruction or destruction of the thoracic duct can lead to a chylothorax. This particular case investigates an incidence of chylothorax in sarcoidosis. A 54-year-old African American woman with a medical history of sarcoidosis, congestive heart failure, and smoking presented to the emergency department with complaints of bilateral foot swelling and exertional shortness of breath 3 days in duration. Physical examination was positive for bilateral crepitations with decreased air entry, abdominal ascites, and bilateral 2+ pitting edema. Both chest X-ray and chest CT were positive for stable bilateral pleural effusions (when compared to imaging done 3 years previously), and thoracocentesis and paracentesis were positive for chylous fluid accumulation. Chylothorax was diagnosed, and based on the previous medical history, the lymphadenopathy of sarcoidosis was determined to cause the occlusion of the thoracic duct. Lymphoscintigraphy and surgical intervention were advised; however, the family decided on conservative management and the patient expired intubated in the ICU. Chylothorax is a rare manifestation of sarcoidosis and high index of suspicion should be there to diagnose this, as there is high morbidity and mortality associated with it.

Transudative chylothorax in a patient with liver cirrhosis: A rare association

Chylothorax is an unusual type of pleural effusion which results from the accumulation of chyle in the pleural cavity. High triglyceride content and presence of chylomicrons in the chyle give this fluid a characteristic milky appearance. Chylothorax most commonly results from the obstruction of the thoracic duct by a malignant lesion or from its traumatic disruption. Liver cirrhosis is an uncommon and frequently underappreciated cause of chylothorax. Pleural effusion in chylothorax is typically described as a lymphocytic predominant, exudative type and it is exceedingly rare to encounter a transudative type of chylothorax. To date, very few cases of transudative chylothoraces have been described in the literature, most commonly in association with liver cirrhosis. Only a limited range of other clinical settings have been linked to transudative chylothorax and timely recognition of these associations can prevent unnecessary, expensive and sometimes invasive workup in this patient population.

Pleural Disorders

This chapter provides an overview of both benign and malignant pleural disorders, starting with the relevant anatomy and physiology. The focus is on the management of pneumothoraces and pleural effusions—conditions that are commonly encountered on a general thoracic surgery service. The pleural cavity is lined by parietal and visceral pleura, which are smooth membranes that are continuous with one another at the hilum and pulmonary ligaments. Parietal Pleura: innermost chest wall layer, divided into cervical, costal, mediastinal and diaphragmatic pleura.

Chylothorax in infants and children

Chylothorax, the accumulation of chyle in the pleural space, is a relatively rare cause of pleural effusion in children. It can cause significant respiratory morbidity, as well as lead to malnutrition and immunodeficiency. Thus, a chylothorax requires timely diagnosis and treatment. This review will first discuss the anatomy and physiology of the lymphatic system and discuss various causes that can lead to development of a chylothorax in infants and children. Then, methods of diagnosis and treatment will be reviewed. Finally, complications of chylothorax will be reviewed.

The role for tunneled indwelling pleural catheters in patients with persistent benign chylothorax

BACKGROUND

Utilization of tunneled indwelling pleural catheters (TIPCs) for persistent pleural effusions is increasingly more common; however, the presence of chylothorax is generally considered a contraindication for utilization of a TIPC due to concerns regarding potential nutritional, immunologic and hemodynamic complications. Therefore, in this study, a cohort of patients with persistent benign chylothorax managed with TIPCs is described.

METHODS

A retrospective analysis of patients with persistent benign chylothorax managed with a TIPC at the study center between January 1, 2008, and March 1, 2012, was completed. Extracted data included patient characteristics, chylothorax etiologies, prior interventions, outcomes and complications.

RESULTS

Eleven patients (14 hemithoraces) had persistent benign chylothorax treated with placement of a TIPC during the inclusion time frame. Etiology of the chylothorax was nontraumatic in 8 of the 11 patients, with the remaining 3 secondary to thoracic surgery. Pleurodesis was achieved in 9 of the 14 hemithoraces, with a median time to pleurodesis of 176 days. All procedures were well tolerated, and no immediate periprocedural complications were reported. One serious complication was encountered in the form of a postoperative pulmonary embolism after replacement of an occluded TIPC, resulting in the patient's death. Two patients had transient occlusions of their TIPCs successfully treated with intracatheter thrombolytic therapy. No significant adverse nutritional, hemodynamic or immunologic outcomes were reported during follow-up for any included patient.

CONCLUSIONS

Utilization of a TIPC for the management of persistent benign chylothorax should be considered early because pleurodesis may be frequently and safely achieved in this patient population.

IgG4-related pleuritis with chylothorax

Presently, 6 cases of IgG4-related pleuritis have been reported. We encountered a patient who developed chylothorax due to IgG4-related disease. To our knowledge, such patients have not been reported. This patient developed right-sided chylothorax and left-sided non-chylothorax lymphocyte-predominant pleuritis. Elevated serum and pleural IgG4 concentrations and histopathological analysis of pleural biopsy confirmed the diagnosis of IgG4-related pleuritis. Left-sided pleuritis improved with corticosteroid therapy, but right-sided chylothorax persists. IgG4-related disease can be one cause of chylothorax.

Octreotide therapy for the management of refractory chylous ascites after a staging operation for endometrial adenocarcinoma

Chylous ascites after para-aortic lymphadenectomy is caused by a rupture in the retroperitoneal lymphatic channels. The incidence of postoperative chylous ascites is increasing as para-aortic lymphadenectomy for the management of gynecologic malignancies becomes more common. However, management of this condition remains unsatisfactory because some patients do not respond to conservative methods and have to undergo surgical intervention, even though they may be malnourished and immunosuppressed. We report the case of a patient who underwent a standard staging operation for endometrial cancer and experienced a large amount of lymphatic leakage, in spite of treatment with total parenteral nutrition and a low-fat diet for over 40 days. As a step-up approach, octreotide, a somatostatin analog, was added and the disease resolved completely. This case demonstrated that octreotide therapy is highly effective in refractory cases of chylous ascites where a large amount of leakage is observed and cases that are otherwise indicated for surgical intervention.

Tunneled pleural catheters in the management of chylothorax from central venous catheter-related superior vena cava obstruction

Chylothorax is characterized by the accumulation of chyle in the pleural space, of which the most common cause is trauma or neoplasm. Although chylothorax accounts for a small proportion of clinical pleural effusions, prompt recognition is needed to avoid malnutrition, immunodeficiency, and fibrothorax. We report 2 patients with superior vena cava obstruction caused by tunneled venous catheters resulting in chylothorax and demonstrate the potential safety of tunneled pleural catheters for prolonged chylothorax drainage in an outpatient setting with rigorous follow-up. Changes in pleural fluid chemistries of the effusions and the possible pathophysiology were assessed with a review of the literature on pleural fluid chemistries in superior vena cava obstruction.

Defying gravity: subdiaphragmatic causes of pleural effusions

Intra-abdominal fluid may migrate readily into the pleural space through naturally occurring holes in the diaphragm or intradiaphragmatic lymphatics. Although any type of fluid in the abdomen may migrate, additional pathologic mechanisms are involved in the development of chylous ascites/chylothorax, yellow nail syndrome, urinothorax, pancreaticopleural fistulas, or other connections. In the differential diagnosis of the large list of potential pleural fluid causes, intra-abdominal sources should be entertained by the practicing physician in the right clinical context.

Transjugular intrahepatic portosystemic shunt in refractory chylothorax due to liver cirrhosis

A pleural effusion containing chylomicrons is termed chylothorax and results from leakage of lymph fluid into the pleural cavity. We report on the case of a 59-year-old woman with severe dyspnea due to a large chylothorax. She was known to have liver cirrhosis but no ascites. There was no history of trauma, cardiac function was normal and thorough diagnostic work-up did not reveal any signs of malignancy. In summary, no other etiology of the chylothorax than portal hypertension could be found. Therapy with diuretics as well as parenteral feeding failed to relieve symptoms. After a transjugular intrahepatic portosystemic shunt (TIPS) had successfully been placed, pleural effusion decreased considerably. Eight months later, TIPS revision had to be performed because of stenosis, resulting in remission from chylothorax. This case shows that even in the absence of ascites, chylothorax might be caused by portal hypertension and that TIPS can be an effective treatment option.

[Efficacy of octreotide in the treatment of chyle fistulas associated with pancreatic disease]

INTRODUCTION

A chyle fistula is an uncommon complication following abdominal and pancreatic surgery, particularly in the retroperitoneal compartment. It can also appear as a complication of a severe acute pancreatitis. Medical treatment is the initial approach, but resolution is often slow. Somatostatin or octreotide can help in accelerating the resolution of fistulae.

PATIENTS AND METHODS

Patients developing a chyle fistula (output > 100ml/24h, normal amylase levels and triglyceride concentrations above 110mg/dl) associated with pancreatic disorders were treated with oral intake restriction and parenteral nutrition, followed by subcutaneous octreotide 0.1mg/8h.

RESULTS

Four female patients from 55 to 80 years old, underwent pancreatic surgery or presented with an acute pancreatitis, were treated. Chyle fistulae ranging from 100 to 2,000ml/24h were treated with octreotide, being resolved within five to seven days. No recurrence has been found in a 2 to 4 years follow up.

CONCLUSIONS

We have found that chyle fistula medical treatment is often related to a slow resolution, somatostatin or octreotide administration dramatically reduces its duration. Other previously reported studies have also shown that the quick onset of such treatment can accelerate the whole process, leading to a shorter recovery and lower hospital costs.

Idiopathic chylothorax in a young man

Chylothorax refers to the presence of chyle in the pleural space owing to disruption or obstruction of the thoracic duct or one of its tributaries. We present a case of non-traumatic, idiopathic chylothorax in an 18-year-old man. Lymphoscintigraphy was used to identify the site of leak. We tried the full armamentarium of available non-surgical therapy on him, including a modified diet, chest tube insertion, total parenteral nutrition and octreotide. Yet, despite optimal medical therapy, his effusion continued to persist. He eventually required thoracic duct ligation, which resulted in resolution of the effusion.

Left-sided neck dissection and chylothorax: a rare complication and its management

Objective:

We present a case of bilateral chylothorax, a rare but life-threatening complication, which developed following a left-sided neck dissection.

Method:

Case report and literature review.

Results:

Chylous leakage fistula is a known complication following neck dissection and occurs in 1 to 2 per cent of patients. After left-sided neck dissection, chylothorax is uncommon and bilateral chylothorax is even rarer. Chylothorax is encountered following certain thoracic procedures, especially superior mediastinal dissection for thyroid cancer treatment. We discuss in detail the successful management of a complicated case.

Conclusion:

We discuss various management options for this condition, and we summarise its successful management within our department.

[Chylothorax as a complication of coronary artery bypass grafting operation]

The authors present the case of a 72-year-old woman who underwent coronary bypass grafting. Left sided chylothorax due to accidental dissection of a thoracic duct branch developed 2 months after sternotomy. As conservative therapy has failed, surgical pleurodesis was performed successfully. Chylothorax is a rare and underestimated complication of coronary bypass grafting. The worldwide increasing number of coronary artery bypass grafting surgeries makes it important to pay attention to this condition. Thus diagnosis of the chyle is relatively easy by its high chylomicron and triglyceride content, but identification of the etiology and its treatment is sometimes challenging for the physician. The treatment of chylothorax is usually conservative. The main goal is to keep the volume of the chyle under control. The number of surgical interventions because of chylothorax is increasing due to an increase of iatrogenic etiology.