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Closed pleural biopsy for neoplasm or inflammatory lesions:

Indication:  Closed pleural biopsy is done to determine causes of pleural effusion after fluid analysis has been nondiagnostic. It is an efficient method in diagnosis of Tuberculosis and malignant pleural effusions.

Closed pleural biopsy has fairly low sensitivity for diagnosis of cancer but it can be increased by adding cytologic evaluation. It is necessary to do further investigations and follow-up in patients that have inflammation in pleural biopsy.

Specimens:  These are either needle biopsies (e.g. Trucut), punch biopsies or material obtained by thoracoscopy.

Tissues present include :  Pleura, adipose tissue, skeletal muscle, nerves and lung parenchyma.

Distinction can be difficult in the following conditions:

1) A florid reactive mesothelial proliferation and a mesothelial neoplasm

2) A tubuloglandular mesothelioma and metastatic adenocarcinoma.

- Indicators towards mesothelioma as opposed to a reactive proliferation are a single population of frankly malignant cells arranged in papillary, tubulopapillary or microcystic pattern.

- Invasion of underlying tissue with transition to spindle cell forms ( a biphasic pattern) is also a useful feature.

- Involvement of the pleura by metastatic adenocarcinoma is suggested by a separate population of malignant cells, distinct from mesothelial cells.

- In areas of pleural fibrosis and adhesions blood vessels can appear thick walled and sclerosed, or may take on a pseudoangiomatous appearance.

An approach to histopathological reporting of pleural biopsy:

Comments should be made on the following features:

- Pleural thickening:

  -Hyaline fibrous tissue with a busket weave pattern in pleural plaques:

  -Cellular fibrous tissue in an inflammatory process or neoplasia:

- Features of inflammatory lesions:

   - Reactive proliferation of mesothelial cells - non-specific.

   - Palisaded histiocytes, which can be multinucleate, with fibrinoid necrosis in rheumatoid disease :

    - Necrotizing granulomas in tuberculous pleurisy :

- Presence of neoplasm:

   - Localized fibrous tumor of pleura, benign or malignant :

   - Mesothelioma : epithelial; mixed (biphasic); fibrous (sarcomatoid) or desmoplastic :

    - Metastatic carcinoma.

Open pleural biopsy - pleural strip:

Open pleural biopsy is often necessary for the diagnosis of mesothelioma as a confident diagnosis can usually be made only when adequate tissue is available. 

When underlying lung is included, the report  should comment on the following features:

    - It is involved by spread of tumor ;

    - There is fibrosis ;

    - Asbestos bodies are present.

Specimens taken for treatment of recurrent pneumothorax:

Pneumonectomy or pleural stripping may be performed for recurrent pneumothoraces. In young patients, pneumothoraces are often spontaneous but malignancy becomes more likely with increasing age.

The microscopical report should comment on:

- The type and severity of inflammatory infiltrate.

     - Eosinophils often seen in pneumothorax (eosinophilic pleuritis);

     -The presence of specific features such as granulomas 

-The presence of neoplasia.

                     

Value of closed pleural biopsy in diagnosis of pleural effusion.Przegl Lek. 2005;62(12):1325-7.

The aim of the study was to assess closed pleural biopsy (CPB) as a diagnostic method of pleural effusion. CPB using Cope needle was performed in 62 patients, proceeded by ultrasound examination. It helped to obtain specimen for histological and microbiological examination even with cases of small amount of fluid. In all 62 patients CPB enabled to diagnose 13 cases with neoplasmatic effusions (majority being adenocarcinomas) and 16 cases of tuberculosis in histological and/or microbiological examination. There were 33 cases with non-specific inflammatory changes. In 7 patients we confirmed neoplastic pleural infiltrates in cytological examination of pleural effusion. In 26 patients videothoracoscopy (VTS) was carried out and 20 of those had post-inflammatory changes. In 4 cases, however we confirmed neoplasmatic effusions and in next 2 cases--tuberculosis. Closed pleural biopsy proves to be an efficient method in diagnosis of Tuberculosis and malignant pleural effusions. However, in 23% of cases with post-inflammatory changes, malignancy and tuberculosis were undiagnosed. This in turn implicates the necessity for further diagnostic procedures including VTS.

Diffuse malignant pleural mesothelioma.Kyobu Geka. 2007 ;60(1):35-9

Malignant pleural mesothelioma is an uncommon neoplasm that caused 647 deaths in Japan in 2004. The incidence of the disease is increasing and is estimated to reach its peak in 2025. We reviewed the clinical features in 11 consecutive patients with pathologically confirmed diffuse malignant pleural mesothelioma in our institution from January 1997 to December 2002. Of the 11 patients, 9 were male and 2 were female with a mean age of 66 (range, 55 to 90) years. Symptoms included dyspnea in 4 patients, chest pain in 3, dyspnea plus chest pain in 2, and cough in 2. Median period between symptom onset and presentation was 1 (range, 0 to 6) month. A history of asbestos exposure was identified in 3 patients and suspected in 5. A definitive diagnosis was made by closed pleural biopsy in 8 patients, pleural fluid cytology in 2, and autopsy in 1. Histological subtypes included epithelioid in 6 patients, sarcomatoid in 2, biphasic in 1, and unknown in 2. International Mesothelioma Interest Group (IMIG) staging included stage II in 6 patients, stage III in 3, and stage IV in 2. Median period between presentation and diagnosis was 1 (range, 0 to 22) month. Treatment included intrapleural chemotherapy in 4 patients, extrapleural pneumonectomy in 3, pleural drainage in 2, and best supportive care in 2. During the follow-up period, 9 patients died and 2 survived. Median survival time after diagnosis was 3 (range, 0 to 51) months. Of the 11 patients, 7 (64%) died within 6 months after the first presentation, and only 1 (9%) lived longer than 2 years after diagnosis.

Current problems in the diagnosis of malignant pleural mesothelioma. Kyobu Geka. 2007 Jan;60(1):14-8.

The diagnosis of malignant pleural mesothelioma (MPM) is challenging although MPM is highly aggressive tumor. The current diagnostic gold standard is principally based on light microscopic examination of hematoxylin-eosin and immunohistochemical stains of large tissue sections. However, pathological diagnosis of MPM and classification of histological findings into 1 of the 3 subtypes (epithelial, sarcomatoid, biphasic) are difficult. We studied correlation between initial and final histological diagnosis retrospectively from the records of 21 cases with MPM from 1989 to 2005. The diagnosis of MPM was confirmed by histopathological examination of pleural tissue samples obtained by closed biopsy under computed tomography (CT) or ultrasonography-guided (5 cases), by biopsy under thoracoscopy with local anesthesia (9), by open biopsy via thoracotomy (2), and by video-assisted thoracoscopic surgery (VATS) [5] . Pleural biopsy under those diagnostic methods led to initial diagnosis of MPM in 15 of 21 cases (71.4%) . In 6 cases (28.6%) , initial diagnosis of MPM were not confirmed because of missing malignant tissue (1 case) and relatively small and sarcomatous element (5). In 2 cases examined by closed biopsy and in 3 examined by thoracoscopy under local anesthesia, initial diagnosis of MPM were not confirmed. To get the accurate diagnosis of MPM, obtaining large tissue samples in the initial examination by less invasive thoracoscopy is recommended.

Diagnostic value of thoracoscopic pleural biopsy for pleurisy under local anaesthesia. ANZ J Surg. 2006 Aug;76(8):722-4

BACKGROUND: We find pleural effusion in clinical practice frequently. However, it is difficult to make a diagnosis definitively by thoracocentesis or closed pleural biopsy. We directly examine the thoracic cavity by thoracoscopy under local anaesthesia, carry out pleural biopsy and make a definitive pathological diagnosis in pleurisy. METHOD: A retrospective study of 138 patients who had been diagnosed by thoracoscopy in our hospital was carried out between January 1995 and January 2005. RESULTS: The patients were 114 men and 24 women, ranging in age from 21 to 85 years, with a mean of 59 years. The right side was involved in 83 patients and the left side in 55. The operations took 11-145 min, with a mean of 46 min. Thoracoscopy directly without thoracocenteses was carried out in 28 of 138 patients. Lung cancer with pleural dissemination was diagnosed in 27, malignant pleural mesothelioma in 10, tuberculous pleurisy in 32, non-specific pleurisy in 58, other tumour in 2 and pyothorax in 9 patients. The overall diagnostic efficacy was 97.1% (134/138). The diagnostic efficacy in the cases of carcinoma was 92.6% (25/27), in malignant pleural mesothelioma it was 100% (10/10) and in tuberculosis it was 93.8% (30/32). No major complications occurred during the examination. CONCLUSION: Pleural biopsy by thoracoscopy under local anaesthesia should be actively carried out in patients with pleurisy, because the technique has a high diagnostic rate and can be easily and safely carried out.

Diagnostic yield of closed pleural biopsy in exudative pleural effusion.Saudi Med J. 2003 Mar;24(3):282-6.

OBJECTIVE: Closed pleural biopsy is known to be diagnostic in approximately 75% of pleural effusion undiagnosed by thoracocentesis or pleural fluid evaluation. The purpose of this study was to determine the efficacy of closed pleural biopsy in a Saudi tertiary care teaching hospital. METHODS: We retrospectively reviewed the diagnostic utility of all closed pleural biopsies performed from January 1988 to December 1997 at the King Fahad National Guard Hospital, Riyadh, Kingdom of Saudi Arabia. RESULTS: One hundred and twenty-two pleural biopsies were performed in 116 patients using cope needle in 39, Abram's needle in 82, and Trucut needle in one patient. Twelve cases were excluded due to transudative effusion (N=6) and obtaining no pleural tissue (N=6). Specific diagnoses were obtained in 54 cases giving a diagnostic yield of 49.1%. Of these 10 revealed neoplasia, 35 tuberculosis, and 9 empyema. A non-specific diagnosis was obtained in 56 (50.9%) cases. CONCLUSION: By closed pleural biopsy 49.1% of undiagnosed exudative pleural effusions could be diagnosed. This shows that closed pleural biopsy is still of value as a diagnostic procedure, and should be carried out prior to invasive procedures such as thoracoscopy or open pleural biopsy.

Closed pleural needle biopsy: predicting diagnostic yield by examining pleural fluid parameters.Respir Med. 2002 Nov;96(11):890-4

OBJECTIVE: Pleural fluid parameters that predict a diagnostic closed pleural needle biopsy were investigated. DESIGN: A retrospective analysis. SETTING: The Institute of Pulmonology, Hadassah University Hospital. PATIENTS AND METHODS: Forty-four patients who underwent closed pleural needle biopsies were included in this study. Pleural fluid values of protein, glucose, lactate dehydrogenase (LDH), pH, and white blood cell count with differential cell counts, from patients with diagnostic and non-diagnostic pleural biopsies were compared. RESULTS: Thirteen patients (29%) had diagnostic biopsies. Malignancy was identified in 10 patients (23%), of whom 70% had adenocarcinoma. Three other patients had non-malignant specific diagnosis. LDH levels in pleural fluid from patients with diagnostic pleural biopsy were higher than in patients with non-diagnostic pleural biopsies (1436 +/- 333 U l(-1) vs. 775 +/- 109 U l(-1); P < 0.05). LDH levels less than 510 U l(-1) were highly predictive of a negative biopsy (negative predictive value of 86.6%). Follow up revealed malignancy including mesothelioma and lymphoma, in 10 of 30 (33%) patients with non-diagnostic biopsies, and one patient died of unrelated cause, while the pleural effusion either resolved, remained stable or an alternative benign process was identified in 19 patients (63%). CONCLUSIONS: Low levels of LDH (< 510 U l(-1)) were highly predictive of a negative pleural needle biopsy. Thus, LDH may serve as a useful guide in deciding whether to perform closed pleural biopsy or to proceed to thoracoscopically guided biopsy.

Diagnostic value of medical thoracoscopy in pleural disease: a 6-year retrospective study.Chest. 2002 May;121(5):1677-83.

STUDY OBJECTIVES: Unlike thoracocentesis and closed pleural biopsy (CPB), medical thoracoscopy permits biopsy with direct visualization. In a 6-year retrospective study of patients having undergone at least one medical thoracoscopy, we analyzed the diagnostic yield of thoracoscopy and its value in the management of pleural disease. SETTING/PATIENTS: From January 1, 1989, to December 31, 1994, 168 medical thoracoscopies were performed on 154 patients (123 men; mean age +/- SE, 61 +/- 1 years), of which 149 were diagnostic and 19 were indicated for therapeutic assessment in malignant mesothelioma (MM). Prior to thoracoscopy, at least one CPB had been performed in 120 of 149 cases, yielding a diagnosis in 96 cases. RESULTS: Thoracoscopy challenged the CPB-based diagnosis in 43 of 96 cases. In 66 cases of nonspecific inflammation diagnosed by CPB, thoracoscopy revealed MM in 16 cases, adenocarcinoma in 10 cases, undetermined carcinoma in 3 cases, and pleural tuberculosis in 3 cases. In 18 cases in which the CPB diagnosis was MM, thoracoscopy, performed for precise staging, challenged the diagnosis in 4 cases. In 12 cases of carcinoma diagnosed by CPB, thoracoscopy specified the histologic type in 7 cases. Thoracoscopic diagnoses were found to be erroneous in 10 of 149 cases, mainly owing to pleural adhesions that limited access to the pleural cavity. There was one thoracoscopy-related death, one case of sepsis, and six cases of empyema. CONCLUSIONS: Medical thoracoscopy appears to be efficient and relatively safe in the management of pleural disease. Pleural adhesions can lower its diagnostic value.

Determining the optimal number of specimens to obtain with needle biopsy of the pleura.Respir Med. 2002 Jan;96(1):14-7

The aim of this study was to define the number of pleural biopsy samples necessary for optimum diagnostic performance and determine to what extent they are complementary. Eighty-four closed pleural biopsies were performed in our department between June 1996 and January 1998 on 55 males and 29 females with an average age of 64.4 +/- 16.7 years.The study of the pleural fluid included: pH, biochemical testing of pleura/serum (proteins, lactate dehydrogenase, glucose, cholesterol, triglycerides, albumin and adenosine deaminase), haemogram, cytology and microbiological testing (Gram-staining, aerobes, anaerobes and mycobacteriae cultures). The biopsies were performed using a Cope needle, with a total of five biopsies for each patient: four for pathological examination (taken numerically in the order in which they were performed: D1, D2, D3 and D4) and one for microbiological testing. In those cases in which the diagnosis was uncertain or effusion persisted, a thoracoscopy or thoracotomy was performed.There were no significant differences in the diagnostic yield of each individual sample (D1, D2, D3 and D4), but there were differences in the sum of the samples, depending on the number of biopsies performed.This was true for total group and the group with carcinomas, but not for the group with tuberculosis. The increase in diagnostic yield with the number of biopsies was more remarkable in the carcinoma cases, where it increased by 35% when four biopsies were performed (54% with one biopsy versus 89% with four biopsies, P < 0.002). In conclusion, the diagnostic yield increased with the number of biopsy samples in the total group and the group with malignancy but not in the group with tuberculous effusions. The best diagnostic performance for malignant pathology was obtained with four samples. In pleural tuberculosis, the diagnostic yield did not increase with more biopsy samples. One high quality sample should be enough to obtain a diagnosis.

Blind pleural biopsy using a Tru-cut needle in moderate to large pleural effusion--an experience.Singapore Med J. 1998 May;39(5):196-9

BACKGROUND: Pleural biopsy is invaluable for the etiological diagnosis of pleural diseases in the presence of an exudative pleural effusion. Conventionally, pleural biopsy is either performed with the Cope's or the Abrams pleural biopsy needles. A few investigators have used the Tru-cut biopsy needle with or without ultrasound guidance. We report our experience in performing closed pleural biopsy using a Tru-cut needle without ultrasound guidance in moderate to large exudative pleural effusion. We used a perpendicular approach to biopsy the pleura instead of the tangential approach described earlier. METHODS: Closed Tru-cut biopsy was performed in 27 consecutive patients with exudative pleural effusion who volunteered to undergo the procedure. The biopsy specimen was sent for histopathology. Pleural fluid analysis and other relevant investigations required to obtain a specific diagnosis were carried out. RESULTS: A specific diagnosis of tuberculosis was obtained on histopathology of pleural tissue in 12 out of 16 patients (diagnostic yield 75%) and in 5 out of 7 patients with malignancy (diagnostic yield 71%). Among the other 4 patients, other causes of exudative pleural effusion were detected in 3 and in 1 patient, no specific diagnosis could be made, despite extensive investigation. CONCLUSION: Closed pleural biopsy using a Tru-cut needle is effective for the specific diagnosis of exudative pleural effusion. The use of a perpendicular approach to biopsy the pleura does not seem to increase the complication in moderate to large pleural effusion.

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E-book - History of  Medicine with special reference to India

Introduction of Pathology

An outline of Diagnostic Techniques available in Pathology

Cellular Injury

Diagram showing Structural Changes in Reversible and Irreversible Cell Injury

Autolysis

Heterolysis

Necrosis

Coagulation necrosis

Caseative necrosis

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Circulatory Anatomy, Physiology and RegulationNormal Fluid Balance

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Diagram showing Capillary System and Mechanisms  of Edema Formation

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MESOTHELIOMA-ONLINE

Aetiology and Pathogenesis of Mesothelioma

Gross features of Mesothelioma

Microscopic features of Mesothelioma

Cytological Diagnosis of Mesothelioma

Histochemistry and Immunohistochemistry in the diagnosis of  Mesothelioma

Variants of  Mesothelioma

WELL DIFFERENTIATED PAPILLARY MESOTHELIOMA

LOCALIZED MALIGNANT MESOTHELIOMA

MULTICYSTIC MESOTHELIOMA

ADENOMATOID TUMOUR

Electron microscopy of  Mesothelioma

Pseudo-mesotheliomatous Adenocarcinoma

Mesothelioma of Atrioventricular Node

Pulmonary Infection

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Gross examination of soft tissue specimen          

A practical approach to histopathological reporting of soft tissue tumours

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Gastrointestinal Stromal Tumour


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