Treatment options in patients with chylothorax

Performance of the ENSEAL X1 Curved Jaw Tissue Sealer in thoracic procedures in a Japanese cohort: a case series report

BACKGROUND

Advanced vessel sealing electrosurgical systems have been widely adopted for grasping, cutting, and sealing vessels. Data remain sparse with regard to its use in thoracic procedures. Thus, a prospective case series, utilizing the ENSEAL X1 Curved Jaw Tissue Sealer (X1CJ) and its companion energy source, the Generator 11 (GEN11), in thoracic procedures was performed in a Japanese cohort.

METHODS

Subjects were recruited at two Japanese surgical sites. The primary endpoint of this post-market study was the achievement of hemostasis (≤ Grade 3) for each thoracic vessel transection. Performance endpoints included scores for tasks completed with X1CJ (adhesiolysis, lymphatics or tissue bundles divided, tissue grasping, tissue cutting, or tissue dissection); hemostasis grading vessel transected; additional products required to achieve hemostasis for Grade 4 vessel transections. Safety was evaluated by evaluating device-related adverse events. All endpoint data were summarized.

RESULTS

Forty subjects (50.0% female) of Asian ethnicity with a mean age of 67.6 ± 11.3 years underwent a lung resection. Estimated mean blood loss was 39.5 mL. Hemostasis was achieved in 97.5% of vessel transections. Thirty-seven vessel sealings resulted in a hemostatic Grade 1 (92.5%). All surgeons reported satisfaction/neutral in terms of tissue grasping (100.0%) while most reported satisfaction/neutral with tissue cutting (95.7%). One device-related serious adverse event was reported (2.5%), a chylothorax requiring an extension of hospitalization. There was no post-operative bleeding or deaths reported during the study period.

CONCLUSION

The X1CJ demonstrated safe and effective performance without any reports of significant intra-operative or post-operative hemorrhage in thoracic vessel sealing.

Successful Percutaneous Thoracic Duct Embolization for Chylothorax After Total Arch Replacement

Chylothorax after cardiac surgery is a rare complication associated with severe morbidity and mortality. This report documents successful treatment with percutaneous thoracic duct embolization for chylothorax after total arch replacement. A 69-year-old man underwent replacement of the aortic arch to treat a ruptured aortic aneurysm. After surgery, the left thoracic drain discharged 2,000 to 3,000 mL serosanguineous fluid per day, even though the patient took nothing orally and was administered subcutaneous octreotide therapy. On postoperative day 9, percutaneous thoracic duct embolization was performed, and the drain could be removed. The chylothorax did not recur, and the patient was discharged on postoperative day 17.

Interventional treatment of refractory non-traumatic chylous effusions in patients with lymphoproliferative disorders

To report results of interventional treatment of refractory non-traumatic abdomino-thoracic chylous effusions in patients with lymphoproliferative disorders. 17 patients (10 male; mean age 66.7 years) with lymphoproliferative disorders suffered from non-traumatic chylous effusions (chylothorax n = 11, chylous ascites n = 3, combined abdomino-thoracic effusion n = 3) refractory to chemotherapy and conservative therapy. All underwent x-ray lymphangiography with iodized-oil to evaluate for and at the same time treat lymphatic abnormalities (leakage, chylo-lymphatic reflux with/without obstruction of central drainage). In patients with identifiable active leakage additional lymph-vessel embolization was performed. Resolution of effusions was deemed as clinical success. Lymphangiography showed reflux in 8/17 (47%), leakage in 2/17 (11.8%), combined leakage and reflux in 3/17 (17.6%), lymphatic obstruction in 2/17 (11.8%) and normal findings in 2/17 cases (11.8%). 12/17 patients (70.6%) were treated by lymphangiography alone; 5/17 (29.4%) with leakage received additional embolization (all technically successful). Effusions resolved in 15/17 cases (88.2%); 10/12 (83.3%) resolved after lymphangiography alone and in 5/5 patients (100%) after embolization. Time-to-resolution of leakage was significantly shorter after embolization (within one day in all cases) than lymphangiography (median 9 [range 4-30] days; p = 0.001). There was no recurrence of symptoms or post-interventional complications during follow-up (median 445 [40-1555] days). Interventional-radiological treatment of refractory, non-traumatic lymphoma-induced chylous effusions is safe and effective. Lymphangiography identifies lymphatic abnormalities in the majority of patients and leads to resolution of effusions in > 80% of cases. Active leakage is found in only a third of patients and can be managed by additional embolization.

Laparoscopic transhiatal en-mass thoracic duct ligation for persistent bilateral spontaneous Chylothorax: A case report

Chylothorax is a rare entity associated with morbidity. Surgical thoracic duct ligation (TDL) by thoracoscopic approach is the recommended choice for persistent chylothorax. However, thoracoscopy is not feasible in case of previous pleurodesis. We describe a successful laparoscopic transhiatal en-mass TDL in a 61-year-old lady for persistent spontaneous chylothorax after failed optimal conservative management and three sessions of pleurodesis. The study shows that laparoscopic transhiatal thoracic duct ligation is an effective alternative in a case where thoracoscopy is not feasible due to various reasons.

Chylothorax: pathophysiology, diagnosis, and management-a comprehensive review

Chylothorax is a rare condition characterized by the accumulation of chyle in the pleural space. While it accounts for a small percentage of pleural effusions, chylothorax can lead to significant morbidity and mortality. This article provides a comprehensive overview of chylothorax, covering its relevant anatomy, aetiology, pathophysiology, clinical features, diagnosis, and management. Injury or disruption to the thoracic duct (which is responsible for chyle transport) leads to the development of chylothorax. This may result from trauma, such as iatrogenic injury during surgery, or non-traumatic causes, including malignancy, lymphatic disorders, and heart failure. Recognition of the underlying cause is essential to tailor management. Clinical presentation varies, with symptoms linked to rate of chyle accumulation and the causative condition. Diagnosis relies on pleural fluid analysis, with demonstration of elevated triglyceride levels (>110 mg/dL) and reduced cholesterol levels (<200 mg/dL) being the key diagnostic criteria employed in clinical practice. Various imaging modalities, including computed tomography (CT) scans and lymphatic-specific investigations, may be utilised to aid identification of the site of chyle leak, as well as determine the likely underlying cause. Chylothorax management is multifaceted, with conservative approaches such as dietary modification and pharmacological interventions often initiated as first-line treatment. Drainage of chylous effusion may be necessary for symptom relief. When conservative methods fail, interventional procedures like thoracic duct ligation or embolization can be considered. Due to the diverse aetiological factors and patient characteristics associated with chylothorax, individualized management strategies are recommended. Nonetheless, management of chylothorax is an evolving field with a paucity of high-quality evidence or standardized guidelines, highlighting the importance of ongoing research and a multidisciplinary approach to optimize individual patient care.

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.

Impact of fluorescent thoracic duct lymphography via intranodal approach in minimal access esophageal cancer surgery

PURPOSE

Chyle leak resulting from thoracic duct (TD) injury poses significant morbidity and mortality challenges. We assessed the feasibility of using near-infrared (NIR) indocyanine green (ICG) imaging for intraoperative fluorescence TD lymphography during minimal access esophagectomy (MAE) in a semiprone position with inguinal nodal injection of ICG dye.

METHODS

Ninety-nine patients with esophageal or gastroesophageal junctional cancer undergoing MAE received inguinal node injections of 2.5 mg ICG dye (total 5 mg) under sonographic guidance during anesthesia induction. Stryker's 1688 AIM HD system was used in 76 cases, Karl Storz OPAL 1 S in 20, and in three cases the Karl Storz Rubina.

RESULTS

In 93 patients (94%), the TD was clearly delineated along its entire length; it was not visualized in 6 patients (6%). Fluorescence guidance facilitated TD ligation in 16 cases, while 3 cases required clipping of duct tributaries for oncological considerations. Twenty-eight patients exhibited minor duct variations. Fluorescence was sustained throughout surgery (median observation time 60 min post-injection; range 30-330). No patient experienced any chyle leak within 30 days post-surgery and no adverse reactions to ICG was evident.

CONCLUSIONS

Intraoperative fluorescence TD lymphography using ICG during MAE in a semiprone position with inguinal nodal injection proved safe, feasible, and effective, allowing clear visualization of the TD in almost all cases. This approach aids safe ligation and reduces chyle leak risk. It offers real-time imaging of TD anatomy and variations, providing valuable feedback to surgeons for managing TD injuries during MAE procedures and represents an excellent educational tool.

Post-interventional infectious complications in percutaneous transabdominal lymphatic interventions: an observational study

The purpose of this retrospective study was to evaluate the occurrence of infectious complications and inflammatory reactions after transabdominal lymphatic-interventions. 63 lymphatic-interventions were performed in 60 patients (male/female: 35/25; mean age 56 [9-85] years) [chylothorax n = 48, chylous ascites n = 7, combined chylothorax/chylous ascites n = 5]. Post-interventional clinical course and laboratory findings were analyzed in the whole cohort as well as subgroups without (group A; n = 35) and with peri-interventional antibiotics (group B; n = 25) (pneumonia n = 16, drainage-catheter inflammation n = 5, colitis n = 1, cystitis n = 1, transcolonic-access n = 2). No septic complications associated with the intervention occurred. Leucocytes increased significantly, peaking on post-interventional day-1 (8.6 ± 3.9 × 106 cells/mL vs. 9.8 ± 4.7 × 106 cells/mL; p = 0.009) and decreased thereafter (day-10: 7.3 ± 2.7 × 106 cells/mL, p = 0.005). CRP-values were pathological in 89.5% of patients already at baseline (40.1 ± 63.9 mg/L) and increased significant on day-3 (77.0 ± 78.8 mg/L, p < 0.001). Values decreased thereafter (day-15: 25.3 ± 34.4 mg/L, p = 0.04). In subgroup B, 13/25 patients had febrile episodes post-interventionally (pneumonia n = 11, cystitis n = 1, drainage-catheter inflammation n = 1). One patient developed biliary peritonitis despite continued antibiotics and underwent cholecystectomy. Baseline leucocytes and CRP-levels were higher in group B than A, but with comparable post-interventional profiles. Clinically relevant infectious complications associated with transabdominal lymphatic-interventions are rare irrespective of peri-interventional antibiotic use. Post-interventional elevation of leucocytes and CRP are observed with normalization over 10-15 days.

Tuberculous chylothorax in paediatric population-a case report and systematic review of the literature

Background

Chylothorax as part of the clinical spectrum of tuberculosis (TB) is a rare entity, especially among children. However, it is crucial for clinicians to be able to identify, correlate, and diagnose chylothorax as it poses significant morbidity to patients.

Case Description

We report on a paediatric case of pleural TB complicated with complex chylothorax, and systematically reviewing the literature for cases of tuberculous chylothorax among children particularly looking at the (I) demographic, (II) clinical presentations, (III) radiological findings, and (IV) investigations among this cohort of patients. The systematic review complied to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We used three separate databases, namely PubMed, Ovid, and Scopus to search for articles with terms "chylothorax", "tuberculosis", and "children". We included article reporting on: (I) children aged below 18; (II) infected by Mycobacterium TB, and (III) written in English only. We reviewed the publications from the inception up to August 2022. After an extensive search, 7 articles were reviewed. We included 10 patients from all the reports. Most common symptoms reported were intermittent fever (n=6) and chronic cough (n=5). Other symptoms include shortness of breath and chest discomfort due to fluid accumulation and/or effusion. Typical TB symptoms like night sweat, loss of weight, and loss of appetite were present in some of the reported patients. Chest radiography was the most used diagnostic imaging modality, in which all of the reported cases noted presence of pleural effusion, with some cases proceeded with computer tomography (CT) of thorax to aid in the diagnosis. Most of the patients had lymphadenopathies and all patients underwent pleural tapping for analysis and symptomatic relief. From the pleural fluid milky appearance and biochemistry correlation, the diagnosis of chylothorax was established in all 10 patients. Every patient was tested positive for TB infection.

Conclusions

Most of the cases showed similar clinical presentation, radiological findings, and laboratory investigations particularly the classic analysis findings of pleural fluid. Even though TB is not a common cause of chylothorax, clinicians should have raised suspicion of it especially after gathering full history and correlating it with the other findings.

Mycobacterial disease causing chylous effusions in two patients living with uncontrolled HIV

Chylous effusions are a rare complication of disseminated non-tuberculous mycobacterial (NTM) infection. This is a case couplet reporting on the treatment challenge of chylous effusions secondary to NTM infection in two individuals living with advanced HIV. Their treatment was complicated by associated immune reconstitution inflammatory syndrome. They both required intermittent paracentesis, steroid treatment and transitioning on to fat-free diets alongside NTM treatment. Only after months of this treatment regimen was successful resolution of the associated chylous effusions achieved. Chylous effusions in immunosuppressed patients living with NTM infection are rarely reported and difficult to manage. This report discusses treatment approaches and highlights the difficulties faced by the treating team.

The application of a medium-chain fatty diet and enteral nutrition in post-operative chylous leakage: analysis of 63 patients

Background

Post-operative chylous leakage (CL) is the pathologic leakage of chylomicron fluid after surgery. This retrospective study was performed to evaluate a uniform oral nutrition management strategy on the post-operative CL.

Methods

We retrospectively reviewed patients who developed post-operative CL and received consultation from a clinical nutritionist in seven departments of the Second Affiliated Hospital of Dalian Medical University from May 2020 to April 2022. We designed the oral nutrition intervention program which mainly standardized the type and amount of foods contained in the medium-chain triglyceride (MCT) diet. The influencing factors of curative efficacy were analyzed. Finally, binary logistic regression analysis was conducted to observe the relationship between curative efficacy and potentially predictive variables, including post-operative albumin, post-operative hemoglobin, surgical procedure, and drainage volume at consultation.

Results

Sixty-three patients with post-operative CL were included in this analysis. Of this number, 58 patients were cured successfully without other treatments. Three patients had a significantly prolonged recovery period, and the remaining two cases were treated by reoperation therapy. The leakage volume at the initiation of enteral intervention had no statistically significant difference in seven surgical departments and surgical sites (left, right, median, and bilateral). The length of stay (LOS) of patients with CL after the intervention was not significantly increased in cardiac, hepatobiliary, gastrointestinal, and urological surgeries. Patients with CL had longer LOS than those without CL in gynecology (P=0.044) and thyroid surgery departments (P=0.008). Each unit increase in post-operative hemoglobin would increase the probability of an effective outcome by 8%, which was statistically significant (P = 0.037).

Conclusion

In treating patients with post-operative CL, we recommend the MCT diet and EN as the first option, rather than fasting, parenteral nutrition (PN), or octreotide.

Transudative chylothorax and frailty: a diagnostic and therapeutic challenge

Transudative chylothoraces are a rare entity and their management in the presence of multiorgan dysfunction and frailty is complex. A woman in her 90s was investigated during acute hospital admission and found unexpectedly to have a transudative chylothorax secondary to cryptogenic cirrhosis. Not all chylothoraces have the classically described milky appearances and a high index of suspicion is vital in determining appropriate investigation and management. Our patient required repeated thoracocentesis and subsequently chose to be discharged from hospital with comfort care. Management of non-malignant pleural effusions can be challenging. Case reports surrounding the management of transudative chylothoraces in particular are scarce. Establishing patient priorities and openly explaining the uncertainty regarding prognosis and potential therapeutic options is paramount in this complex and changing field.

Scourge of tuberculosis: A rare case of simultaneous chylothorax and chylous ascites

Tuberculosis (TB) is a rare cause of chylothorax and chylous ascites. This is a case of simultaneous TB-chylothorax and chylous ascites in a 20-year-old patient who had been diagnosed with disseminated Multi-Drug Resistant (MDR) Tuberculosis two years ago. Abdominal distention with horseshoe-shaped dullness was found on examination. Abdominal ultrasound revealed gross ascites and bilateral gross pleural effusion. Pleural fluid analysis was positive for chylomicrons and revealed elevated Protein, Albumin, ADA, and Triglyceride. GeneXpert was negative and no growth was seen on culture. Lymphoscintigraphy showed a normal ascent of radio tracer along bilateral lower limb. Lymphangiogram and thoracic ductogram showed multiple dilated lymphatic ducts in the bilateral internal iliac region with obstruction of lymphatic flow in the iliac group of nodes. Low-fat diet was given. No interventional radiological approach or surgical correction could be done for the patient. He died after one and half years with progressive swelling and emaciation.

Delayed Chylothorax Following Blunt Chest Trauma Treated with Repeated Lymphangiography: A Case Presentation

Chylothorax is mostly iatrogenic, with blunt chest trauma being a rare cause. Treatment depends on the volume of drainage. Specifically, conservative treatment, such as total parenteral nutrition and pleural drainage, is performed in cases of low daily output (< 500 mL/day). Patients with persistent chylothorax despite medical treatment or with high daily output (> 1-1.5 L/day) are candidates for surgical or radiological intervention. We present a case of delayed-onset chylothorax after blunt trauma caused by thoracic spine fractures, in which persistent chylothorax was successfully managed with repeated lymphangiography with lipiodol when other treatment modalities failed. The case is peculiar in that the chylothorax occurred 40 days after the initial traumatic event and was treated with lipiodol injection, despite maintaining moderate to high daily output.

Standardizing lymphangiography and lymphatic interventions: a preclinical in vivo approach with detailed procedural steps

PURPOSE

To present a preclinical in vivo approach for standardization and training of lymphangiography and lymphatic interventions using a pictorial review.

MATERIALS AND METHODS

Different lipiodol- and gadolinium-based lymphangiography and lymphatic interventions were performed in twelve (12) landrace pigs with a mean bodyweight of 34 ± 2 kg using various imaging and guiding modalities, similar to the procedures used in humans. The techniques used were explicitly introduced and illustrated. The potential applications of each technique in preclinical training were also discussed.

RESULTS

By applying visual, ultrasonography, fluoroscopy, CT, cone-beam CT, and/or MRI examination or guidance, a total of eleven techniques were successfully implemented in twelve pigs. The presented techniques include inguinal postoperative lymphatic leakage (PLL) establishment, interstitial dye test, five types of lymphangiography [incl. lipiodol-based translymphatic lymphangiography (TL), lipiodol-based percutaneous intranodal lymphangiography (INL), lipiodol-based laparotomic INL, lipiodol-based interstitial lymphangiography, and interstitial magnetic resonance lymphangiography (MRL)], and four types of percutaneous interventions in the treatment of PLL [incl. thoracic duct embolization (TDE), intranodal embolization (INE), afferent lymphatic vessel sclerotherapy (ALVS), and afferent lymphatic vessel embolization (ALVE)].

CONCLUSION

This study provides a valuable resource for inexperienced interventional radiologists to undergo the preclinical training in lymphangiography and lymphatic interventions using healthy pig models.

Hepatic Chylothorax: An Uncommon Pleural Effusion

An 83-year-old male with chronic obstructive pulmonary disease and liver cirrhosis presented with confusion and dyspnea. On chest X-ray, he had the right mid to lower lung zone white out. Ultrasound-guided thoracentesis drained 1.5 L of milky white pleural fluid which was transudative according to chemical analysis. Transudative chylothorax in liver cirrhosis without ascites is rare, but can happen. When the flow of ascitic chylous fluid into the pleural space equals the rate of ascites production, clinical absence of detectable ascites will occur. Hepatic chylothorax is important and should be kept in differentials when evaluating patients with liver cirrhosis.

"Mega" Cisterna Chyli: A Case Report and Review of the Literature

Enlarged cisterna chyli is an infrequently encountered entity and is most often an asymptomatic, incidental finding on imaging for other reasons. The pathogenesis of cisterna chyli enlargement is not well elucidated and includes infectious, inflammatory, and idiopathic causes. In this report, we present the rare case of an asymptomatic, markedly dilated "mega" cisterna chyli in a 60-year-old female.

Management of lymphoma-associated chylothorax by interventional radiology and chemotherapy: a report of five cases

Chylous effusion is associated with lymphatic obstruction or leakage in mediastinal or abdominal lymph nodes, and is a rare but troublesome complication in patients with malignant lymphomas. Although there is no standard of care, it is often treated with simultaneous chemotherapeutic and non-chemotherapeutic interventions. Here, we describe the cases of five patients with lymphoma-associated chylothorax with the aim of clarifying an effective treatment strategy. All patients achieved a partial response or better for lymphoma. All patients underwent interventional radiology (IVR) procedures, including lymphangiography (LAG) and thoracic duct embolization (TDE). Complete resolution of chylothorax was eventually achieved by IVR procedures or pleurodesis in all patients. No patients experienced serious adverse events related to LAG/TDE. Treatment of chylous effusion required months for most patients (range: 0.2-4.8 months). Our data suggest that a combination of chemotherapy and LAG/TDE is effective for refractory lymphoma-related chylous effusion.

MR lymphangiography of lymphatic abnormalities in children and adults with Noonan syndrome

Noonan syndrome is associated with complex lymphatic abnormalities. We report dynamic-contrast enhanced MR lymphangiography (DCMRL) findings in children and adults with Noonan syndrome to further elucidate this complex disease spectrum. A retrospective evaluation of patients with confirmed Noonan syndrome and clinical signs of lymphatic dysfunction undergoing DCMRL between 01/2019 and 04/2021 was performed. MRL included T2-weighted imaging (T2w) and DCMRL. Clinical history/presentation and genetic variants were recorded. T2w-imaging was evaluated for central lymphatic abnormalities and edema distribution. DCMRL was evaluated regarding the presence of cisterna chyli/thoracic duct, lymphatic leakages, pathological lymphatic reflux and abnormal lymphatic perfusion. The time from start of contrast-injection to initial enhancement of the thoracic duct venous junction was measured to calculate the speed of contrast propagation. Eleven patients with Noonan syndrome with lymphatic abnormalities (5 female, 6 male; 7 infants, 4 adults; mean age 10.8 ± 16.4 years) were identified (PTPN11 n = 5/11 [45.5%], RIT1 n = 5/11 [45.5%], KRAS n = 1/11 [9%]). Patients had a chylothorax (n = 10/11 [91%]) and/or pulmonary lymphangiectasia [dilated pulmonary lymph vessels] (n = 9/11 [82%]). Mediastinal/pulmonary edema was depicted in 9/11 (82%) patients. The thoracic duct (TD) was (partially) absent in 10/11 (91%) cases. DCMRL showed lymphatic reflux into intercostal (n = 11/11 [100%]), mediastinal (n = 9/11 [82%]), peribronchial (n = 8/11 [73%]), peripheral (n = 5/11 [45.5%]) and genital lymphatics (n = 4/11 [36%]). Abnormal pulmonary/pleural lymphatic perfusion was seen in 8/11 patients (73%). At infancy peripheral/genital edema was more prevalent in patients with RIT1 than PTPN11 (n = 3/5 vs. n = 0/5). Compared to patients with PTPN11 who had fast lymphatic enhancement in 4/5 patients, enhancement took markedly longer in 4/5 patients with RIT1-mutations. Thoracic duct dysplasia, intercostal reflux and pulmonary/pleural lymphatic perfusion are characteristic findings in patients with Noonan syndrome presenting with chylothorax and/or pulmonary lymphangiectasia. Central lymphatic flow abnormalities show possible phenotypical differences between PTPN11 and RIT1-mutations.

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

In Vitro Evaluation of Acrylic Adhesives in Lymphatic Fluids-Influence of Glue Type and Procedural Parameters

To evaluate the embolic properties of different acrylic adhesive/iodized oil mixtures for lymphatic interventions. Polymerization of histoacryl (HA) (Bayer Healthcare) and glubran 2 (GL) (GEM) mixed with iodized oil (ratios 1:0–1:7) were investigated in lymphatic fluids with low and high triglyceride (low TG & high TG) contents. Static polymerization time and dynamic polymerization experiments with different volumes of glucose flush (1, 2 and 5 mL) were performed to simulate thoracic duct embolization. For both glues, static polymerization times were longer when the iodized oil content was increased and when performed in high TG lymphatic fluid. In the dynamic experiments, the prolongation of polymerization due to the oil content and TG levels was less pronounced for both glue types. Increased lymphatic flow rates decreased embolization times for low glue/oil ratios while preventing embolization for high glue/oil ratios. Higher glucose flush volumes increased occlusion times. Polymerization times of acrylic glue in a lymphatic fluid are prolonged by increasing the iodized oil concentration and triglyceride concentration as well as by using larger volumes of glucose flush. Increased lymphatic flow rates decrease embolization times for low glue/oil ratios and may prevent embolization for high glue/oil ratios.

Treatment of Postoperative Lymphatic Leakage Applying Transpedal Lymphangiography - Experience in 355 Consecutive Patients

PURPOSE

 Report of experience from a single institution in treating postoperative lymphatic leakage (PLL) applying conventional transpedal lymphangiography (TL).

MATERIALS AND METHODS

 453 patients with the initial diagnosis of PLL receiving TL between 03/1993 and 09/2018 were identified in the database. Only patients with confirmed PLL were included in the study. The technical success, safety, and treatment success of TL were evaluated. Independent predictors of TL treatment failure were examined using univariate and multivariate logistic regression analysis.

RESULTS

 355 consecutive patients (218 men, 137 women; median age of 62 years) who underwent TL for PLL (e. g., chylothorax) after ineffective conservative treatment were included. The median time between causal surgery and TL was 27 days. The median technical success rate of TL was 88.5 %, with a median volume of Lipiodol of 10.0 ml. No complication of TL was recorded. Three groups were defined according to the different clinical courses: group A (41/355, 11.5 %) - TL with technical failure; group B (258/355, 72.7 %) - "therapeutic" TL alone with technical success; and group C (56/355, 15.8 %) - "diagnostic" TL with simultaneously invasive treatment (incl. surgical revision and percutaneous sclerotherapy). Treatment success rate and median time to treatment success were higher in group C than in group B, but without significant differences (64.3 % vs. 61.6 %, p = 0.710; six vs. five days, p = 0.065). Univariate and multivariate logistic regression analyses for group B confirmed drainage volume (> 500 ml/d) and Lipiodol extravasation as independent predictors of TL clinical failure (odds ratios [ORs] of 2.128 and 2.372 [p = 0.005 and p = 0.003, respectively]).

CONCLUSION

 TL is technically reliable, safe, and effective in treating PLL. When conservative treatment fails, TL can be regarded as the next treatment option.

KEY POINTS

  · TL is technically reliable, safe, and effective for treating PLL.. · When conservative treatment fails, TL can be regarded as the next treatment option.. · Drainage volume > 500 ml/day is an independent predictor of clinical failure after TL.. · Lipiodol extravasation is an independent predictor of clinical failure after TL..

CITATION FORMAT

· Pan F, Richter GM, Do TD et al. Treatment of Postoperative Lymphatic Leakage Applying Transpedal Lymphangiography - Experience in 355 Consecutive Patients. Fortschr Röntgenstr 2022; DOI: 10.1055/a-1717-2467.

Microsurgical Thoracic Duct Lymphovenous Bypass in the Adult Population

Thoracic duct occlusion can lead to devastating complications, resulting in recalcitrant chylothoraces, ascites, generalized lymphedema, metabolic derangement, and death. Lymphatic extravasation has traditionally been managed conservatively and, in recent years, using minimally invasive techniques, such as thoracic duct ligation and embolization. However, these measures are often limited in application and therapeutic success, resulting in chronically difficult conditions with few modalities available for definitive management. Advances in microsurgery have allowed for surgical treatment and resolution of peripherally-based lymphatic pathology, though microsurgical intervention to address central lymphatic abnormalities is scarcely described. This report is the first series detailing experiences utilizing microsurgical thoracic duct lymphovenous bypass in a refractory adult population with thoracic duct occlusion. Four patients successfully underwent the procedure, with three achieving complete resolution of symptoms. The fourth patient enjoyed partial resolution, though ubiquitous lymphatic deformities have conferred recurrent residual lower-extremity peripheral edema requiring future intervention. Postoperatively, patent anastomoses were confirmed under magnetic resonance lymphangiography. This series demonstrates the feasibility of microsurgical thoracic duct lymphovenous bypass as a promising technique in treating patients suffering from thoracic duct occlusion. This intervention is effective for recalcitrant chylothorax, chylous ascites, and generalized lymphedema, particularly when traditional and interventional radiological techniques are unsuccessful.

Chylothorax: A Stepwise Approach to Diagnosis and Treatment

Chylothorax, a lymphatic flow disorder characterized by an abnormal circulation of lymph fluid into the pleural cavity, is the most common cause of pleural effusions during the neonatal period. This condition affects 1/15,000 neonates every year. Affected neonates often manifest with respiratory distress, electrolyte imbalances, sepsis, and even immunodeficiencies. Mortality risk is highest among neonates undergoing cardiac surgery as well as those with associated hydrops fetalis. Conservative treatment options include bowel rest with administration of parenteral nutrition, followed with medium-chain triglyceride enteral feedings, and octreotide therapy. Severe or persistent cases require surgical intervention. This can involve a unilateral or bilateral pleurectomy and thoracic duct ligation, with or without pleurodesis. Early identification and successful treatment of this condition is contingent upon awareness of the most current evidence and a timely cross-disciplinary approach to care.

Non-conservative Management of Chylothorax

Chylothorax is caused by lymphatic leakage, which can develop after thoracic surgery and is associated with cancer. Although prospective randomized trials have not been performed, radiological interventions have been performed in several cases with persistent chylothorax, adjunct to 2 weeks of conservative management. The success rate of such interventions is diverse due to anatomical variations, although the results are promising. However, in cases of treatment failure after cycles of interventions, a team approach may be necessary to determine whether surgical management is warranted.

[Interventional management of secondary retentions after thoracic and abdominal trauma]

BACKGROUND

Percutaneous treatment of secondary thoracic and abdominal retention formations after blunt or penetrating trauma now represents a standard interventional radiological procedure. Various supportive imaging procedures are available, whereby computed tomography is mostly the treatment of choice due to the high diagnostic sensitivity.

OBJECTIVE

Based on clinical examples this review article gives an overview of the state of the art minimally invasive interventional treatment of secondary posttraumatic retention formations of the thorax and abdomen. The indications and contraindications are illustrated and typical techniques and access routes are described.

MATERIAL AND METHODS

Besides the general introduction and technical part, the article is divided into the anatomical compartments thorax and abdomen and frequently asked questions are dealt with.

CONCLUSION

After the study of this article you should have got to know and understand the indications for a minimally invasive approach, the possible techniques and necessary materials as well as the indications and contraindications.

Lipiodol lymphangiography as a treatment for refractory postoperative chylothorax: a case report

Postoperative chylothorax is the most frequent cause of traumatic thoracic chyle leakage. Conservative treatment is primarily used to treat low flow rate chylothoraces and should be initiated as soon as the diagnosis has been made. In case of high flow rate chylothorax or failure of initial treatment, surgery and radiological treatment are indicated. Despite this fact, there is a lack of consensus regarding the best therapeutic option to choose. In the case reported herein, a postoperative chylothorax with a low flow chyle leakage which didn't respond to conservative treatment is demonstrated. We used lipiodol lymphangiography to determine the site of chyle leakage and to successfully treat our patient. Risk factors for non-response to conservative treatment are also discussed.

Traumatic contralateral chylothorax in a patient with penetrating neck injury: a case report

Chylothorax is defined as a collection of chyle within the pleural cavity secondary to injury of the thoracic duct. We describe a rare case of a contralateral chylothorax resulting from a penetrating wound to the left lower anterior neck region. A 37-year-old male presented to the emergency room with a penetrating stab wound of the left neck. Upon clinical exam, the wound measured about 3-4 cm with minimal bleeding and no expanding hematoma or other hard sign of vascular injury. Subsequently, his right chest tube output developed a milky appearance with a total volume of 260 cc over 24 h. The specimen was sent for triglyceride analysis and confirmed diagnosis of chylothorax. He was managed with conservative therapy not requiring surgical intervention. The anatomical variations arising in the thoracic duct warrant the consideration of possible chylothorax in both right and left pleural effusions secondary to penetrating trauma.

Post-Operative Chylothorax in Children Undergoing Congenital Heart Surgery

Chylothorax is a rare postoperative complication of congenital heart surgery. It has high morbidity with increased hospital stay and cost of treatment. Damage to the thoracic duct, disruption of accessory lymphatic vessels, and increased venous pressure exceeding that in the thoracic duct have been proposed as the possible causes of chylothorax after surgery for congenital heart disease. Prompt diagnose with early initiation of treatment will reduce the duration of drainage. Staged treatment is the general principle in managing this serious complication. Loss of chyle leads to volume, nutritional and electrolyte depletion, immunological deficiencies and hematological complications. Identifying the underlying cause and addressing it is crucial to definitive management.

Management of Malignant Chylothorax with Subcutaneous Octreotide Treatment

There are currently limited published case reports and clinical studies looking at octreotide as a potential therapeutic agent for treating surgery- and malignancy-related chylothorax in adult patients. Few case reports have shown that low-dose subcutaneous octreotide can be used to treat malignant chylothorax. We report the case of a 57-year-old high-grade follicular lymphoma patient with malignant chylothorax which responded rapidly and was successfully treated with octreotide. Significant improvements were noted in her dyspnea, abdominal distention and pain, and chylous output. This case also highlights the importance of understanding the pharmacotherapeutic effects of octreotide when managing malignant chylothorax as it may help to benefit patients by improving symptoms, quality of life, and length of hospital stay. Further prospective studies are warranted to further evaluate the role of octreotide in the management of malignant chylothorax.

Chylothorax caused by blunt chest trauma: a review of literature

Chylothorax is the accumulation of chyle in the pleural cavity that typically contains a high concentration of triglycerides. Blunt chest trauma is a rare cause. The aim of this study is to review all of the reported cases of chylothorax caused by blunt chest trauma. Available databases were explored systematically for the condition and the eligible papers were included. The literature search revealed 30 studies with 39 cases, 72.3% of the cases were male, and 21.7% of the patients were female. The age range varied between 4 and 75 years with a mean age of 35.8 years. All of the patients were diagnosed after fluid sampling from the pleural fluid by thoracentesis and/or chest tube insertion. About 71.4% of the patients were treated successfully by conservative management: others (28.6%) were managed surgically. Although it is a rare condition, persistent milky drainage after blunt chest trauma should raise the suspicion of chylothorax. Pleural fluid sampling is the cornerstone of the diagnosis. In the majority of the cases, conservative treatment is quite enough. Surgery is indicated whenever non-operative measures failed.

Nontraumatic chylothorax secondary to lymphoma and filariasis

Chylothorax is characterized by extravasation of chyle into the pleural space resulting from thoracic duct damage. The effusion is most commonly unilateral, with the right and left side being affected in 50% and 33.3% of the patients, respectively. Only 16.66% of cases present a bilateral effusion. The underlying etiology can be classified as spontaneous or traumatic. The diagnosis is made through pleural fluid analysis and imaging studies. The following article presents two cases of left spontaneous chylothorax: a 26-year-old male presenting with a chylous pleural effusion due to a non-Hodgkin lymphoma and a 47-year-old patient from a tropical area with a chylous pleural effusion attributed to filariasis. Filariasis as a cause of chylothorax is uncommon and there is not much literature on the topic. Alongside the case presentations, information on chylothorax etiology, mechanism, diagnosis and treatment options is provided.

Interventional Radiology Treatment for Postoperative Chylothorax

Postoperative chylothorax is a rare occurrence after various thoracic surgical procedures, but it poses a substantial risk of morbidity and mortality. Thoracic duct embolization (TDE) is currently deemed the optimal treatment due to its safety and efficacy. This review offers an introduction to interventional options in this setting, detailing the steps of TDE for the edification of those engaged in postoperative care.

Nodal and Pedal MR Lymphangiography of the Central Lymphatic System: Techniques and Applications

Novel lymphatic imaging and interventional techniques are increasingly used in the diagnostic workup and treatment of pathologies of the central lymphatic system and have opened a new field of interventional radiology. The mainstay of lymphatic imaging today is magnetic resonance lymphangiography (MRL). It provides information on the anatomy of the central lymphatic system, lymphatic flow, as well as lymphatic pathologies and therefore is a valuable tool for treatment planning. There are two techniques to perform contrast-enhanced MRL: nodal dynamic contrast-enhanced MRL (nodal DCE-MRL) and interstitial transpedal MRL (tMRL). Nodal DCE-MRL yields superior information on lymphatic flow dynamics and is therefore best suited for suspected lymphatic flow pathologies and lymphatic malformations. tMRL is a technically simpler alternative for central lymphatic visualization without the need for sonographically guided lymph node cannulation. This review article describes current MRL techniques with a focus on contrast-enhanced MRL, their specific advantages, and possible clinical applications in patients suffering from pathologies of the central lymphatic system.

The retrospective research of enteral nutrition with medium-chain triglyceride and total parenteral nutrition support of postoperative chylothorax in adults

Background:

Chylothorax is caused by thoracic lymphatic system injuries that leads to the lymph extravasating into the thoracic cavity. There are few reports comparing the therapeutic effects of enteral nutrition with medium-chain triglyceride and total parenteral nutrition, and the results are inconsistent. Our study aimed to research the optimum nutrition support method for chylothorax.

Study design:

We retrospectively reviewed 35 chylothorax patients after heart and chest surgery from 2014 to 2018, at West China Hospital of Sichuan University, among them there were 27 post-heart surgery patients. We analyzed the therapeutic effects and costs of enteral nutrition with medium-chain triglyceride (E group) and total parenteral nutrition (T group) for chylothorax.

Results:

The results were similar in patients with all surgeries and patients with only post heart surgery. The total cost during hospitalization in E group was higher than T group (P < 0.01), whereas the nutrition support cost was lower (P < 0.001). The length of hospital stay was longer in E group than T group (P > 0.05). Time from admission to surgery was shorter and from surgery to chylothorax diagnosis was longer in E group compared with T group. Time to resolution and removal of drainage was shorter in E group than T group but the differences were not significant.

Conclusion:

The therapeutic effects in enteral nutrition with medium-chain triglyceride and total parenteral nutrition had no obvious differences. Moreover, enteral nutrition with medium-chain triglyceride is safer and more economical. Therefore, we suggest that enteral nutrition with medium-chain triglyceride could be the first choice to treat postoperative chylothorax when the gastrointestinal tract function is allowed, and this result could be considered for postoperative chylous ascites.

Chylothorax caused by blunt trauma: Case review and management proposal

Chylothorax is a potentially devastating complication of lymphatic trauma of the thorax. To date, no recommendations have provided decision making support for prompt definitive treatment. We present a 53 year old male involved in a motor vehicle collision sustaining 9 left rib fractures with flail segments. He was treated non-operatively with a chest tube and no fat diet. A Case report review was performed and a proposed guideline for managing blunt trauma chylothorax in adult patients was developed. In low-output chylothorax, effective initial treatment begins with a no fat diet and chest tube. We propose that a low output leak be defined as <500 mL of initial output or <500 mL/day and can be managed non-operatively in nearly 100% of patients. High output injuries of >1000 mL of initial output will require surgical intervention and should be considered for prompt definitive care.

Refractory chylous effusions in lymphangioleiomyomatosis patient post lung transplant

Lymphangioleiomyomatosis is a rare systemic disorder of unknown etiology that affects young women almost exclusively. Chylous effusions are known to be associated with lymphangioleiomyomatosis and may be difficult to treat. We present the case of a 37-year-old female who received bilateral lung transplantation for lymphangioleiomyomatosis complicated by refractory chylothorax and chylous ascites, ultimately controlled through repeated, open surgical procedures and percutaneous lymphatic embolization interventions. The combined surgical and interventional radiological approach, while not novel in their own right, suggests that a multi-modal interventional approach may be required in refractory cases.

Combined antegrade and retrograde thoracic duct embolization for complete transection of the thoracic duct

Chylothorax is an uncommon complication after thoracoabdominal surgery and is typically due to injury of the thoracic duct (TD) or one of its tributaries. Patients who fail conservative management benefit from thoracic duct embolization (TDE). TDE is a percutaneous technique that includes pedal or intranodal lymphangiography, transabdominal catheterization of the TD, and glue embolization of the TD. Alternative access to the TD can be achieved via retrograde transvenous approach or direct US-guided puncture in the left neck followed by TDE.

This case involves chylothorax in a 58-year-old male due to disruption of the main TD during esophagectomy, resulting in disjointed leaks from 2 separate areas related to a single complex injury. Lymphangiography and embolization via both transcervical and transabdominal approaches were performed to stop the leak.

A Rare Case of Chylothorax after Heart Transplantation

Chylothorax is an exceedingly rare but serious complication of orthotopic heart transplantation (OHT). Prompt diagnosis and appropriate management are essential for a good outcome. Management is similar to that of nontransplant patients, but special attention must be given to patients' nutritional and immunological status. Relevant literature on this topic is limited. We describe our experience in the management of chylothorax after OHT and provide a summary of reported cases of this complication after isolated heart and combined heart/lung transplant.

Lymphangiographic Interventions to Manage Postoperative Chylothorax

Background

Postoperative chylothorax may be caused by iatrogenic injury of the collateral lymphatic ducts after thoracic surgery. Although traditional treatment could be considered in most cases, resolution may be slow. Radiological interventions have recently been developed to manage postoperative chylothorax. This study aimed to compare radiological interventions and conservative management in patients with postoperative chylothorax.

Methods

We retrospectively reviewed periprocedural drainage time, length of hospital stay, and nil per os (NPO) duration in 7 patients who received radiological interventions (intervention group [IG]) and in 9 patients who received conservative management (non-intervention group [NG]).

Results

The baseline characteristics of the patients in the IG and NG were comparable; however, the median drainage time and median length of hospital stay after detection of chylothorax were significantly shorter in the IG than in the NG (6 vs. 10 days, p=0.036 and 10 vs. 20 days, p=0.025, respectively). NPO duration after chylothorax detection and total drainage duration were somewhat shorter in the IG than in the NG (5 vs. 7 days and 8 vs. 14 days, respectively).

Conclusion

This study showed that radiological interventions reduced the duration of drainage and the length of hospital stay, allowing an earlier return to normal life. To overcome several limitations of this study, a prospective, randomized controlled trial with a larger number of patients is recommended.

A rare case of congenital chylothorax in a Palestinian neonate

Congenital chylothorax (CCT) is a rare condition which is characterized by an accumulation of lymphatic fluid in the pleural space and exposes the newborn to respiratory distress and losing of proteins, coagulation factors and immunoglobulins. These cases are liable to have sepsis and high mortality rate. We report a case of a female fetus in Gaza delivered at 36 weeks gestational age diagnosed with CCT. The antenatal ultrasonography showed right sided significant pleural effusion and at birth; she had severe respiratory distress. The baby was intubated at birth and right-sided chest tube drain inserted to drain the pleural fluid which was chylus. The case responded partially to intravenous (IV) octreotide and sildenafil. Chylus stopped completely after 2 days of treatment with octreotide and medium chains triglyceride (MCT) oil-based formula feeding. Conclusion: A female newborn diagnosed with right-sided pleural effusion by antenatal scan was confirmed to have congenital chylothorax postnataly. The infant responded to IV octreotide and MCT based formula feeding.

Bilateral Chylothorax as a Unique Presentation of Pancreaticobiliary or Upper Gastrointestinal Cancer

Chylothorax presents as exudate with lymphocytic predominance and high triglyceride-low LDH levels, usually due to a traumatic disruption of the thoracic duct, possibly iatrogenic. Other causes include malignancy, sarcoidosis, goiter, AIDS, or tuberculosis. Here we present a case of a 66-year-old male who came in with cough and shortness of breath for few weeks. A week earlier, at an ED visit, he was diagnosed with pneumonia based on CT angiogram of the chest without contrast that showed bilateral pleural effusion and bilateral pulmonary infiltrates. The CT-guided placement of bilateral chest tube drained 1160 cc of creamy yellow fluid on the right and 1200 cc of creamy yellow fluid on the left. CT chest/abdomen/pelvis showed bilateral ground-glass opacities within the lungs and possible bony metastasis. A whole-body bone scan showed multiple bony metastatic lesions throughout the skeleton. IR guided bone biopsy suggested upper GI or pancreaticobiliary cancer. Venous ultrasound with Doppler of left upper extremity showed findings suggestive of a nonocclusive DVT of proximal/mid left subclavian vein which is difficult to compress. Eventually, malignancy-related DVT of the left subclavian/brachiocephalic vein was identified as the possible etiology for the bilateral chylothorax.

A case report of tuberculous chylothorax

Tuberculous chylothorax is a rare infectious disease that occurs when the thoracic duct is obstructed. Treatment is directed to the tuberculosis infection. A 55-year-old male, driver, born in Trujillo (Peru) is admitted to the emergency department with increasing dyspnea and a 5-day dry cough. The physical examination revealed vocal fremitus, dullness to percussion, and a vesicular murmur that was decreased on the lower 2/3 of the left hemithorax. The X-ray and the thoracic ultrasound revealed significant left pleural effusion. The thoracocentesis drained fluid identified as chylothorax. Subsequently, a thoracic tube was placed, with a decrease in pleural fluid volume and later normalization of the cytochemical changes. Diagnostic video bronchoscopy was performed with a bronchoalveolar aspirate, revealing acid-fast bacilli. The patient received antituberculosis treatment with a favorable outcome. Tuberculous chylothorax is an important cause of chylothorax to be considered in endemic areas of tuberculosis. Proper treatment of the infection leads to resolution of the disease.

Video-assisted thoracoscopic surgery in trauma: pros and cons

Thoracic injuries account for 60% of all trauma presentations. These patients often have extra-thoracic injuries adding to the complexity of their management. Morbidity and the associated mortality are significantly increased in the elderly. The majority of cases will comprise of simple rib fractures, requiring adequate analgesia. In those that require surgical intervention, the use of video-assisted thoracoscopic surgery (VATS) is becoming increasingly more popular. VATS can often provide greater visualisation of the intra-thoracic structures, whilst limiting the burden of injury to smaller non-rib spreading incisions. It is therefore becoming increasingly used as a diagnostic tool to identify the extend of the injuries whilst also allowing for therapeutic intervention. These benefits translate into decreased rate of post-operative complications and a shorter length of inpatient stay. We also discuss the relative contra-indications and cautions to the use of VATS in the setting of trauma.

Experiences in the treatment of refractory chylothorax associated with lymphoproliferative disorders

BACKGROUND

Chylothorax is a rare condition which can be associated with malignant lymphoproliferative disorders (LPDs). We retrospectively analyzed the results of the conservative treatment of 10 patients with persistent non-traumatic malignant chylothorax.

RESULTS

Conservative treatment lead to a decline of chylothorax after mean of 66 days and consisted of the treatment of the underlying disease and of simultaneous long-term supportive care (drainage of the thoracic cavity, dietary measures and nutrition management). In most cases (80%), chylothorax disappeared only after a successful therapeutic response of the underlying disease. Low-dose radiotherapy had very good effects in two patients.

CONCLUSION

Conservative treatment of malignant chylothorax can be considered a suitable method. Based on our results, successful treatment of the lymphoproliferative disorder seems to be a very important factor for the disappearance of chylothorax.

Nutritional Requirements of Lung Transplant Recipients: Challenges and Considerations

An optimal nutritional status is associated with better post-transplant outcomes and survival. Post-lung transplant nutrition management is however particularly challenging as lung recipients represent a very heterogeneous group of patients in terms of age, underlying diseases, weight status and presence of comorbidities. Furthermore, the post-transplant period encompasses several stages characterized by physiological and pathophysiological changes that affect nutritional status of patients and necessitate tailored nutrition management. We provide an overview of the current state of knowledge regarding nutritional requirements in the post-lung transplant period from the immediate post-operative phase to long-term follow-up. In the immediate post-transplantation phase, the high doses of immunosuppressants and corticosteroids, the goal of maintaining hemodynamic stability, the presence of a catabolic state, and the wound healing process increase nutritional demands and lead to metabolic perturbations that necessitate nutritional interventions. As time from transplantation increases, complications such as obesity, osteoporosis, cancer, diabetes, and kidney disease, may develop and require adjustments to nutrition management. Until specific nutritional guidelines for lung recipients are elaborated, recommendations regarding nutrient requirements are formulated to provide guidance for clinicians caring for these patients. Finally, the management of recipients with special considerations is also briefly addressed.

Massive thymic hyperplasia in an adult: A rare case report and literature review

INTRODUCTION

Massive thymic hyperplasia is an extremely rare disorder, with fewer than 60 cases reported so far. Majority of the previous cases occurred in neonates, infants, and older children.

PRESENTATION OF CASE

A man was found to have an anterior mediastinal mass without any symptoms at 30 years of age. Operation was done successfully. The mass measured 112 mm × 191 mm × 184 mm and weighed 2141 g. Histological and immunohistochemical findings further confirmed the diagnosis of massive thymic hyperplasia. The complication of postoperative chylothorax occurred, which has not been previously reported in MTH. After undergoing conservative treatment, the patient finally recovered.

DISCUSSION

This is the first case of massive thymic hyperplasia reported in an adult (defined as ≥ 18 years old). Chylothorax is one of the potentially fatal complications. However, we carried out effective treatments, which are educational and clinically interesting to surgeons and clinicians.

CONCLUSION

Although not previously reported, massive thymic hyperplasia could also be found in adults. The main treatment for massive thymic hyperplasia is surgical removal. Good clinical effects on post-thymectomy chylothorax are available after undergoing conservative treatment.