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Related Concept Videos

Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
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Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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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:
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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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Positron Emission Tomography01:29

Positron Emission Tomography

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Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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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.
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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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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: Aug 2, 2025

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
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Pulmonary Tuberculosis with Elevated CEA and Positive PET-CT.

Hong Q Ren, Qian Zhao, Wen Yang

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    Pulmonary tuberculosis can mimic lung cancer on imaging, leading to misdiagnosis. A case report and literature review highlight the importance of biopsy for accurate diagnosis of solitary pulmonary nodules.

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    Area of Science:

    • Pulmonology
    • Radiology
    • Oncology

    Background:

    • Solitary pulmonary nodules (SPNs) on imaging can be challenging to differentiate from lung cancer.
    • Elevated Carcinoembryonic Antigen (CEA) and positive Positron Emission Tomography-Computed Tomography (PET-CT) findings can increase the likelihood of misdiagnosing pulmonary tuberculosis as lung cancer.

    Observation:

    • A case of a solitary pulmonary nodule initially suspected as lung cancer due to imaging characteristics and elevated biomarkers.
    • Ancillary tests suggested malignancy, but lung biopsy ultimately confirmed pulmonary tuberculosis.

    Findings:

    • Pulmonary tuberculosis can present as a solitary pulmonary nodule, mimicking lung cancer.
    • Accurate diagnosis requires invasive procedures like lung biopsy when imaging suggests malignancy.

    Implications:

    • Clinicians must maintain a high index of suspicion for tuberculosis in cases of solitary pulmonary nodules with malignant features.
    • Avoiding misdiagnosis of solitary pulmonary nodules is crucial to prevent incorrect treatment and ensure optimal patient outcomes.