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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.

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...

Atypical Pneumonia

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...

Pulmonary Hypertension: Classification and Pathogenesis

Pulmonary Hypertension: Classification and Pathogenesis

Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...

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: May 19, 2026

RNAscope for In situ Detection of Transcriptionally Active Human Papillomavirus in Head and Neck Squamous Cell Carcinoma

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Published on: March 11, 2014

[Pulmonary squamous papilloma].

Yoshinari Matsuda¹, Eiji Yatsuyanagi, Keisuke Sato

¹Department of Chest Surgery, National Hospital Organization, Obihiro, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery

|August 8, 2012

Summary

This report details a rare pulmonary squamous papilloma case. Surgical removal confirmed benignity, with the patient showing no signs of recurrence.

Area of Science:

Pulmonology
Thoracic Surgery
Oncology

Background:

Pulmonary squamous papilloma is an uncommon benign lung neoplasm.
Distinguishing benign papillomas from malignant lung cancers can be challenging.
Early diagnosis and appropriate management are crucial for favorable outcomes.

Observation:

A 42-year-old woman presented with a persistent dry cough.
Chest computed tomography revealed a left lower lobe lung mass.
Elevated serum tumor markers (CEA, SCC) and a positive PET scan (SUVmax 11.55) suggested malignancy.

Findings:

Video-assisted thoracoscopic surgery with left basal segmentectomy was performed.
Intraoperative pathological examination confirmed a squamous papilloma, ruling out malignancy.

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The patient experienced an uneventful recovery post-surgery.

Implications:

This case highlights the importance of histopathological confirmation for lung masses, even with suspicious imaging and elevated tumor markers.
Pulmonary squamous papilloma, though rare, should be considered in the differential diagnosis of lung nodules.
Timely surgical intervention can lead to complete resolution and cure for benign pulmonary neoplasms.