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Pulmonary Tuberculosis II

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...

Pulmonary Tuberculosis III

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:

Other Pulmonary Disorders

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.

Pulmonary Tuberculosis I

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...

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Related Experiment Video

Updated: Dec 21, 2025

Enhancing Tumor Content through Tumor Macrodissection

Enhancing Tumor Content through Tumor Macrodissection

Published on: February 12, 2022

Diffuse large B-cell lymphoma presenting with cavitary lung disease.

Yukiko Hibino¹, Ryosuke Imai², Torahiko Jinta²

¹Department of Internal Medicine St. Luke's International Hospital Tokyo Japan.

Respirology Case Reports

|May 15, 2020

Summary

This summary is machine-generated.

Diffuse large B-cell lymphoma (DLBCL) presenting as cavitary lung disease is rare. This case highlights the importance of considering DLBCL in patients with cavitary lung lesions and splenic masses.

Keywords:

Cavitary lung disease diffuse large B‐cell lymphoma

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Area of Science:

Oncology
Pulmonology
Pathology

Background:

Diffuse large B-cell lymphoma (DLBCL) is an aggressive non-Hodgkin lymphoma.
Cavitary lung disease can be challenging to diagnose, with differential diagnoses including malignancy, granulomatous disease, and infection.
Imaging findings alone are often insufficient to differentiate these conditions.

Observation:

A patient presented with cavitary lung disease and a splenic mass.
The clinical presentation mimicked primary lung cancer or infectious/granulomatous processes.

Findings:

Transbronchial biopsy confirmed DLBCL as the cause of cavitary lung disease.
The splenic mass was also identified as DLBCL metastasis.

Implications:

DLBCL should be included in the differential diagnosis for patients with cavitary lung disease.
Rare metastatic patterns of DLBCL, such as splenic involvement, should be recognized.
Early consideration of DLBCL can lead to timely diagnosis and treatment.