Bonus Material-12_SEEK PBR 2025.pptxfinal.Levine

Pdf Summary

This document, authored by Dr. Stephanie M. Levine and Dr. John (Jack) Buckley, presents a series of clinical pulmonary medicine board review questions covering various diseases and complications in pulmonary and transplant medicine, with detailed explanations.

Key cases include:

1. <strong>Lymphangioleiomyomatosis (LAM):</strong> A rare disease affecting primarily premenopausal women, characterized by diffuse thin-walled pulmonary cysts and extrathoracic angiomyolipomas. Important features are recurrent pneumothorax, chylous effusions, and positive tissue staining for HMB-45. Treatment includes sirolimus, which improves pulmonary function and angiomyolipomas. Lung transplantation is possible but may see disease recurrence. Importantly, LAM lung tissue stains negative for S-100 (distinguishing it from Langerhans cell histiocytosis). Cholesterol pleural effusions are not typical; chylothorax with elevated triglycerides is common.

2. <strong>Actinomycosis:</strong> A chronic subacute infection by filamentous anaerobic gram-positive bacteria, showing sulfur granules in sputum or tissues, typically affecting cervicofacial, abdominal, and thoracic sites. Responds to prolonged high-dose penicillin therapy. Nocardia is distinguished by weak acid-fastness and requires TMP-SMX treatment.

3. <strong>Thymoma:</strong> The most common anterior mediastinal mass in adults aged 40–60, often asymptomatic or with mild chest symptoms. It is associated with paraneoplastic syndromes such as myasthenia gravis, pure red cell aplasia, Good syndrome, and others. Imaging shows smooth, round anterior mediastinal masses. Treatment includes surgical resection, sometimes chemotherapy and radiation.

4. <strong>Disease Recurrence Post-Lung Transplantation:</strong> Certain diseases, including sarcoidosis, LAM, and Langerhans cell histiocytosis, are known to recur in lung allografts. Recurrences are often asymptomatic initially and may appear years after transplantation.

5. <strong>Idiopathic Pulmonary Fibrosis (IPF) Cough Management:</strong> Chronic dry cough in IPF patients is difficult to treat. Gabapentin, a neuromodulator, is recommended when other therapies fail and can improve cough-related quality of life. Proton pump inhibitors and thalidomide are generally not routine treatments for cough in IPF.

6. <strong>COPD and Lung Volume Reduction:</strong> Lung volume reduction surgery (LVRS) improves survival in limited COPD subgroups with poor exercise tolerance, while bronchoscopic lung volume reduction (BLVR) with endobronchial valves has shown symptomatic and functional improvements in upper lobe predominant emphysema with low collateral ventilation, predominantly in the left lung where fissures are intact.

7. <strong>Diffuse Alveolar Hemorrhage (DAH) Post Stem Cell Transplant:</strong> Occurs in 1-5% of stem cell transplant recipients, with high mortality (about 60-80%). Presents early post-transplant with dyspnea, hypoxemia, cough, and often no hemoptysis. Diagnosis through bronchoalveolar lavage shows progressively bloodier aliquots; transbronchial biopsy is risky and not usually performed.

8. <strong>Lung Transplant Complications:</strong> CMV infection, acute cellular rejection, and post-transplant lymphoproliferative disorder (PTLD) are key concerns. CMV is common in donor-positive/recipient-negative transplants, monitored by PCR/antigenemia, and treated with antivirals like ganciclovir/valganciclovir. Acute cellular rejection involves perivascular lymphocytic infiltrates and is treated with corticosteroids. PTLD is EBV-associated and treated with rituximab and immunosuppression reduction.

This review underscores the importance of clinicopathologic correlation in diagnosis and treatment selection in complex pulmonary and transplant cases.

Meta Tag

Concept Lymphangioleiomyomatosis

Concept Thymoma

Concept Diffuse Alveolar Hemorrhage

Concept Solitary Fibrous Tumor of the Pleura

Concept Actinomycosis

Keywords

lymphangioleiomyomatosis

actinomycosis

thymoma

lung transplantation

idiopathic pulmonary fibrosis

COPD

Chronic Obstructive Pulmonary Disease

diffuse alveolar hemorrhage

cytomegalovirus

acute cellular rejection

post-transplant lymphoproliferative disorder

Lymphangioleiomyomatosis

Thymoma

Diffuse Alveolar Hemorrhage

Solitary Fibrous Tumor of the Pleura

Actinomycosis