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BACKGROUND: Pleural effusion indicates an imbalance between pleural fluid formation and removal. Classified into exudative and transudative, with common symptoms of dry cough, dyspnea and pleuritic chest pain. Confirmed etiology has to be established for effective treatment. OBJECTIVE: Correlate clinical and biochemical profile of various etiologies of pleural effusion. MATERIALS & METHODS: Retrospective observational study of 2 years in the department of respiratory medicine, GMC Bhopal on 280 cases of pleural effusion. RESULTS: Most common etiology was tubercular 202 (72.4%) followed by malignant in 36 (12.8%). With respect to tubercular, malignant pleural effusion has relative risk (RR) of 0.138 (p value < 0.05) in the age group of 51-60 years, which is statistically significant. Patients of tuberculosis complained of fever 158 (78.2%) whereas with malignancy complained of chest pain 16 (44.4%) followed by hemoptysis 12 (33.3%). For hemoptysis, with respect to tubercular, malignant effusion has RR of 5.68 (p value < 0.05) which is significant. History of smoking was significant in malignant effusion with RR of 2.57 (p value < 0.05) as compared to tubercular. Pleural fluid ADA was >70 in 83.7% in tubercular effusion, glucose was <60 mg/dl in 79% tubercular, malignant and bacteriological cause, LDH was >1000 in 88.4% in bacteriological and 72.3% in malignant effusion. CONCLUSION: Lack of tools for confirming diagnosis leads to diagnostic dilemma and delay in treatment initiation, leading to deterioration and untoward fatality in some cases. Our goal is early diagnosis by correlating clinical symptoms with biochemical profile and help initiate rapid treatment.

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This case underscores the pivotal role of early cytological examination of bodily fluids in the preliminary detection of lymphoma, a conclusion reinforced by subsequent pathological findings and refined through immunohistochemical characterization. A morphological analysis of pleural effusion cells was conducted in a 25-year-old male presenting initially with concurrent pleural and pericardial effusions. Initial morphological assessment of effusion specimens indicated the likelihood of a lymphoproliferative disorder. Subsequent detailed pathological and immunohistochemical investigations confirmed this suspicion, culminating in a definitive diagnosis of T-cell lymphoblastic lymphoma (T-LBL). The case emphasizes the necessity of employing a comprehensive and synergistic diagnostic approach, facilitating prompt and accurate diagnosis and subtyping of lymphoma.

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INTRODUCTION: Gallstone with acute cholecystitis is one of the most common diseases in the clinic. If the disease is serious, gallbladder gangrene, perforation, and sepsis may be caused. Gallbladder diseases rarely cause thoracic-related complications, especially pleural fistula, which is very rare in clinical practice. PATIENT CONCERNS: A 52-year-old male patient was admitted to the emergency department for 1 month with recurrent right middle and upper abdominal pain. DIAGNOSIS: Computed tomography diagnosis: cholecystitis and peri-inflammation, small abscess around the base of the gallbladder, local peritonitis, and bilateral pleural effusion. INTERVENTIONS: After admission, conservative treatment was given. On the 4th day of admission, the symptoms worsened, and an emergency catheter drainage was performed on the right thoracic cavity to extract 900 mL of dark yellow effusion. After the operation, a large amount of bili-like fluid was continuously drained from the thoracic drainage tube. After the iatrogenic biliary fistula caused by thoracic puncture was excluded, cholecystopleural fistula was considered to be cholecystopleural fistula. On the 6th day of admission, endoscopic retrograde cholangiopancreatography (ERCP) + cholecystography + Oddi sphincterotomy + laminating biliary stent was performed in the emergency department, and cholecystopleural fistula was confirmed during the operation. OUTCOMES: The patient recovered well after surgery, computed tomography examination on the 20th day after surgery indicated that pleural effusion was significantly reduced, and the patient was cured and discharged. The patient returned to the hospital 8 months after the ERCP operation to pull out the bile duct-covered stent. The patient did not complain of any discomfort after the postoperative follow-up for 3 years, and no recurrence of stones, empyema, and other conditions was found. CONCLUSION: Cholecystopleural fistula is one of the serious complications of acute cholecystitis, which is easy to misdiagnose clinically. If the gallbladder inflammation is severe, accompanied by pleural effusion, the pleural effusion is bili-like liquid, or the content of bilirubin is abnormally elevated, the existence of the disease should be considered. Once the diagnosis is clear, active surgical intervention is needed to reduce the occurrence of complications. Endoscopic therapy (ERCP) can be used as both a diagnostic method and an important minimally invasive treatment.

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BACKGROUND Fluid overload-associated large B-cell lymphoma (FO-LBCL) is a recently described malignant lymphoma that presents with serous effusions in the pleura, peritoneum, and/or pericardium but without an identifiable lymphoma mass. This report describes the case of an 80-year-old man who presented with a pleural effusion and describes the approach to diagnosis and management of FO-LBCL. CASE REPORT We present a case of an 80-year-old man who presented with right pleural effusion and shortness of breath at work. Initial radiological assessment suggested a pleural effusion on the right side, without an identifiable mass, given the patient's symptoms and imaging characteristics. Subsequently, he underwent a pleural fluid puncture and biopsy. Based on the initial pathological assessment, malignant lymphoma, a non-epithelial tumor, was considered likely, but differentiation from reactive proliferative cells was difficult, given the patient's symptoms and cytologic characteristics. Postoperatively, histopathological examination and immunohistochemistry confirmed a diagnosis of FO-LBCL. After 1 year of follow-up, the condition had progressed and the patient died due to recurrence. CONCLUSIONS This report has presented a case of FO-LBCL in an elderly man with pleural effusion and described how this rare and recently described lymphoma was diagnosed and managed.

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INTRODUCTION AND IMPORTANCE: Lung adenocarcinoma may resemble the clinical presentation of an infectious or inflammatory lung disease. The coexistence of lung cancer, and polyserous effusions is uncommon, which may cause a diagnostic challenge. However, any polyserous effusions at a young age must always be suspicious for malignancy. CASE PRESENTATION: We report a case of 38-year-old male patient with polyserous effusions and pneumonia who was treated accordingly and showed clinical improvement with a significant reduction of pericardial and pleural effusions. Subsequent testing and a biopsy resulted in the histopathological diagnosis of an adenocarcinoma of the lung. CLINICAL DISCUSSION: Nonrecurrent polyserous effusions in lung adenocarcinoma are uncommon, and negative cytology results may not exclude malignancy due to the moderate sensitivity of pleural and pericardial fluid cytology. Clinicians should remain vigilant for false-negative results, especially in younger patients. Malignancy should not be ruled out because pleural and pericardial fluid cytology have a sensitivity of 60% and 92%, respectively. CONCLUSION: Our case highlights the diagnostic challenges posed by atypical presentations of lung adenocarcinoma and emphasizes the importance of considering malignancy in the differential diagnosis of polyserous effusions, even when initial cytology results are negative. Clarifying the rationale for this study enhances its relevance and impact.

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Recurrent pleural effusions are associated with significant morbidity and mortality. Pleural effusions are frequently seen in patients with chronic renal failure due to fluid retention. Pleural effusions in renal transplant patients are usually related to secondary pulmonary infections, surgical complications, drug toxicities, or post-transplant lymphoproliferative disorder (PTLD). We describe an unusual cause of recurrent pleural effusion attributed to fungal infection in a transplanted kidney due to activation of the renin-angiotensin-aldosterone system (RAAS), successfully treated with antifungal medications that led to complete resolution of pleural effusion.

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Peripheral intravenous central catheter (PICC) is a common tool for intravenous infusion for children who need central venous access. Although it is safe for physicians and nurses to place, complications like infection, occlusion, phlebitis, and bleeding can occur. We report a 5-month-old infant who suffered respiratory failure caused by catheter malposition resulting in massive fluid infusion into the thoracic cavity. Point-of-care ultrasound (POCUS) was utilized to identify a massive pleural effusion that prompted urgent drainage. Complications related to PICC in pediatric patients are not common but difficult to immediately identify sometimes. Therefore, careful attention should be paid by physicians to identify and reduce the risk of complications associated with PICC. Thus, visual tools are strongly advised to enhance the safety of invasive procedures.

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Background: Bilothorax is defined as the presence of bile in the pleural space. It is a rare condition, and diagnosis is confirmed with a pleural fluid-to-serum bilirubin ratio of >1. Methods: The PubMed, Embase, Google Scholar, and CINAHL databases were searched using predetermined Boolean parameters. The systematic literature review was done per PRISMA guidelines. Retrospective studies, case series, case reports, and conference abstracts were included. The patients with reported pleural fluid analyses were pooled for fluid parameter data analysis. Results: Of 838 articles identified through the inclusion criteria and removing 105 duplicates, 732 articles were screened with abstracts, and 285 were screened for full article review. After this, 123 studies qualified for further detailed review, and of these, 115 were pooled for data analysis. The mean pleural fluid and serum bilirubin levels were 72 mg/dL and 61 mg/dL, respectively, with a mean pleural fluid-to-serum bilirubin ratio of 3.47. In most cases, the bilothorax was reported as a subacute or remote complication of hepatobiliary surgery or procedure, and traumatic injury to the chest or abdomen was the second most common cause. Tube thoracostomy was the main treatment modality (73.83%), followed by serial thoracentesis. Fifty-two patients (51.30%) had associated bronchopleural fistulas. The mortality was considerable, with 18/115 (15.65%) reported death. Most of the patients with mortality had advanced hepatobiliary cancer and were noted to die of complications not related to bilothorax. Conclusion: Bilothorax should be suspected in patients presenting with pleural effusion following surgical manipulation of hepatobiliary structures or a traumatic injury to the chest. This review is registered with CRD42023438426.

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ABSTRACT: We assessed the preliminary efficacy and toxicity of intrapleural instillation of nivolumab in patients with large pleural effusion. Patients with metastatic cancers who have a large volume of pleural effusion and required evacuation were eligible. Thoracentesis followed by nivolumab (40 mg, single intrapleural instillation) was performed. The primary endpoint was 3-month recurrence-free survival. A total of 13 patients were enrolled. The study was terminated after stage 1 as no efficacy was observed; 7 patients (54%) had a recurrence of pleural effusion at 3 months. Thirteen (100%) patients had no recurrence, dyspnea, or cough within 1 month, and the median time to recurrence was 1.9 months (95% confidence interval [CI], 1.35-2.5). No adverse events were identified. We concluded that a single intrapleural instillation of the nivolumab at 40 mg was ineffective and well-tolerated in cancer patients with pleural effusion.

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A previously healthy male patient presented with relapsing serous effusions affecting the pleural, pericardial and peritoneal membranes, along with thrombocytopaenia, following infection with COVID-19. An extensive workup was performed to rule out potential causes of polyserositis, including an infectious disease screen, autoantibody testing and imaging; however, no clear other cause was found. He exhibited a robust response to high-dose corticosteroid therapy but experienced several recurrences on tapering of treatment. His clinical course and treatment response were most suggestive of an autoimmune or autoinflammatory cause of polyserositis, though without confirmation of a specific underlying diagnosis. This report builds on existing literature on a possible link between COVID-19 and polyserositis.

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This article presents three detailed case reports and a brief review of the literature on a rare manifestation of systemic lupus erythematosus (SLE) known as Pseudo-Pseudo Meigs' Syndrome (PPMS). The patients' condition was characterized by elevated CA-125 levels, massive ascites andpleural effusion which is typically associated with ovarian malignancies but can also present in various non-malignant conditions, including SLE. A thorough literature review was conducted, summarizing similar cases and their clinical outcomes to provide a broader understanding of this uncommon syndrome. The findings emphasize the need for heightened awareness and consideration of pseudo-pseudo Meigs' syndrome in patients with SLE presenting with unexplained ascites and pleural effusion.

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INTRODUCTION: Japanese spotted fever (JSF) mainly occurs in Japan; however, it has been increasingly reported in China. JSF is typically characterized by fever, rash, and eschar, in addition to non-specific symptoms. Yet, reports on the pulmonary indicators in JSF are limited. Herein, we report an unusual case of JSF associated with pleural effusion and pneumonia, in which the pathogen was identified via blood next-generation sequencing (NGS). CASE PRESENTATION: We report a case of a 33-year-old woman who presented with fever for five days, rash for two days, and myalgia, fatigue, and edema for one day. She had recently been on vacation when an unknown insect bit her. The doctors at the local primary hospital considered a bacterial infection and administered dexamethasone, ceftriaxone, indomethacin, and anti-allergy agents, but the symptoms persisted. A rash without pruritus or pain developed gradually over the entire body and face. We considered rickettsial infection and administered doxycycline and levofloxacin. Metagenomic NGS from blood confirmed the presence of Rickettsia japonica (R. japonica). Abdominal computed tomography revealed bilateral pleural effusion with two atelectasis; patchy shadows with blurred edges, and uniform enhancement in both lower lungs. After several days of treatment, the symptoms and laboratory results improved. A literature review of the epidemiology of R. japonica and JSF in China, characteristics of JSF, and related pulmonary changes, and technology to diagnose JSF is provided. CONCLUSIONS: JSF has a variety of symptoms and is becoming increasingly popular in China. Clinical doctors need to identify it carefully.

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BACKGROUND: Pleural effusions in post-operative thoracic surgery patients are common. Effusions can result in prolonged hospitalizations or readmissions, with prior studies suggesting mixed effects of pleural drainage on hypoxia. We aimed to define the impact of pleural drainage on pulse oximetry (SpO2) in post-thoracic surgery patients. METHODS: A retrospective study of post-operative thoracic surgery patients undergoing pleural drainage was performed. SpO2 and supplemental oxygen (FiO2) values were recorded at pre- and post-procedure. The primary outcome was difference in pre-procedural and post-procedural SpO2. RESULTS: We identified 95 patients with a mean age of 65 (SD - 13.8) years undergoing 122 pleural drainage procedures. Mean drainage volume was 619 (SD-423) mL and the majority of procedures (88.5 %) included a drainage of <1000 mL. SpO2 was associated with an increase from 94.0 % (SD-2.6) to 97.3 % (SD-2.0) at 24-h (p < 0.0001). FiO2 was associated with a decrease from 0.31 (SD-0.15) to 0.29 (SD-0.12) at 24-h (p = 0.0081). SpO2/FiO2 was associated with an increase from 344.5 (SD-99.0) to 371.9 (SD-94.7) at 24-h post-procedure (p < 0.0001). CONCLUSIONS: Pleural drainage within post-operative thoracic surgery patients offers statistically significant improvements in oxygen saturation by peripheral pulse oximetry and oxygen supplementation; however the clinical significance of these changes remains unclear. Pleural drainage itself may be requested for numerous reasons, including diagnostic (fevers, leukocytosis, etc.) or therapeutic (worsening dyspnea) evaluation. However, pleural drainage may offer minimal clinical impact on pulse oximetry in post-operative thoracic surgery patients.

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BACKGROUND: Pleural effusion caused by fibrosing mediastinitis is rarely reported. This study aimed to summarize the clinical manifestations, diagnosis and treatment of transudative pleural effusion due to fibrosing mediastinitis. METHODS: Medical records and follow-up data of 7 patients with transudative pleural effusion due to fibrosing mediastinitis in Beijing Chaoyang Hospital between May 2014 and Feb 2018 were retrospectively analyzed. RESULTS: These patients included 4 males and 3 females, with an average age of (64 ± 9) years. There were 3 left-sided effusions, 2 right-sided effusions and 2 bilateral effusions. Previous or latent tuberculosis was found in 6 patients. Pulmonary hypertension was indicated by echocardiography in all the 7 patients. Computed tomography pulmonary angiography (CTPA) of all the 7 cases showed increased soft tissue images visible in the mediastinum and bilateral hilus, different degrees of stenosis or occlusion in the pulmonary artery and pulmonary vein. In addition, 4 cases were found of right middle lobe atelectasis with a mediastinal window setting. There was interstitial pulmonary edema on the side of pleural effusion with a lung window setting. All the 7 patients were treated with intermittent drainage of pleural effusion combined with diuretic therapy. Five patients were treated with antituberculosis therapy. Up to now, two patients died of right heart failure and respiratory failure after 2 and 16 months respectively; The remaining 5 patients were still in follow up. CONCLUSION: Fibrosing mediastinitis can lead to pulmonary vein stenosis or occlusion, and thus cause transudative pleural effusion, which can be detected by CTPA. Pulmonary hypertension, long time of cough, and a history of tuberculosis are common in these patients. The common therapy is intermittent drainage of pleural effusion combined with diuretic therapy.

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BACKGROUND: We present an extremely rare manifestation of dirofilariasis in the pleural cavity. This is the first human pulmonary dirofilariasis reported in Lithuania; according to our knowledge, only two other patients were documented with this pathology in the world. CASE PRESENTATION: A 72-year-old woman was admitted to the hospital complaining of dyspnea, left-side chest pain, and a dry cough. She was a retiree living alone in the countryside without domestic pets (sometimes stray dogs appear) or a travel history. A complete blood count was within normal limits, with a CRP level of 16.8 mg/l and D-dimer concentration of 900 µg/l, which raised suspicion of pulmonary embolism. In chest computed tomography angiography, pulmonary embolism was excluded, and only left pleural effusion without abnormal lesions was confirmed. Left thoracocentesis was performed, and the pleural fluid was evaluated as an exudate with a predominance of eosinophils (59%), along with the presence of parasites. These parasites exhibited the morphology of Dirofilaria repens. Oral doxycycline (100 mg, twice daily) and albendazole (400 mg, twice daily) were prescribed for a 14-day course. A month later, there were no pathological findings on the chest X-ray, and the patient no longer had respiratory symptoms. However, the patient presented with an emerged, painful palpable right breastmass, where the rash was previously observed. Ultrasound imaging revealed a 1.5 × 2 cm nodule, which was surgically removed. Parasites consistent with Dirofilaria repens were suspected but not definitively identified. Pharmacological treatment for dirofilariasis was not further prescribed. CONCLUSIONS: This case encourages doctors to be more vigilant because the patient, who neither travelled nor kept any pets, contracted dirofilariasis. Diagnostic and treatment guidelines are lacking, necessitating further research. Treatment with doxycycline and albendazole yielded positive outcomes, suggesting potential efficacy for dirofilarial pleuritis.

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A woman in her 40s presented with exertional dyspnoea with an absence of haemoptysis, cough, fever and weight loss. The patient had a medical history of extensive endometriosis. Investigations revealed a large right-sided pleural effusion. The effusion was aspirated and was exudative in nature.A contrast-enhanced CT thorax was performed to help exclude dual pathology. The only positive finding was bilateral breast nodules, subsequently found to be benign fibroadenomas on histological analysis of biopsy samples.After malignancy was ruled out as a cause, the patient was referred for medical thoracoscopy for a biopsy and other investigations. Histology demonstrated the presence of endometrial tissue in the pleura and thereby confirmed the diagnosis of thoracic endometrial syndrome.Video-assisted thoracoscopic surgery repair of diaphragm and talc pleurodesis was carried out in an uncomplicated procedure and the patient was discharged with good recovery.

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BACKGROUND: Acute hepatitis A infection is common among children in developing nations. The clinical presentation in children is usually asymptomatic and anicteric, and it is a self-limiting infection. Rarely, it can be associated with extrahepatic complications such as pleural effusion, acalculous cholecystitis, and ascites. CASE PRESENTATION: An 8-year-old middle eastern child presented with abdominal pain, jaundice in the sclera, yellowish color of urine, and poor appetite. In the last two days, abdominal distension developed. After conducting diagnostic investigations, the child was diagnosed with HAV hepatitis associated with bilateral pleural effusion, acalculous cholecystitis, and ascites. He was managed conservatively with vitamin K supplementation and supportive parenteral fluids. After 4 days, clinical improvement was observed. CONCLUSION: Hepatitis A infections presented with extrahepatic manifestations like pleural effusion, acalculous cholecystitis, and ascites are very rare, especially in children. There have been some reports of these manifestations occurring in isolation, but for them to co-exist to our knowledge, this has only been reported in two cases in the literature, and this is the third case with all these three rare complications being presented simultaneously in a single child. Although HAV infection is an asymptomatic and self-limiting viral disease in childhood, it can manifest with rare extrahepatic complications, so pediatricians should be aware of this rare association to avoid unnecessary investigations.

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