Related Experiment Video
Updated: Feb 2, 2026

Imaging Mycobacterium tuberculosis in Mice with Reporter Enzyme Fluorescence
Published on: February 26, 2018
Primary cavitary tuberculosis in an infant
Zahide Yalaki1, Medine Ayşin Taşar1, Eren Yıldız1
1Clinic of Pediatrics, Ankara Training and Research Hospital, Ankara, Turkey.
Insights
Pediatric tuberculosis can present unusually in infants, sometimes with rare cavitary lesions. Early diagnosis is key, even with atypical symptoms, to manage infant tuberculosis effectively.
Area of Science:
- Pediatrics
- Infectious Diseases
- Radiology
Background:
- Tuberculosis (TB) in infants typically manifests as hilar lymphadenopathy and lung parenchymal changes.
- Cavitary lesions are an uncommon presentation of TB in this age group.
Observation:
- A six-month-old infant presented with fever and decreased breath sounds, initially diagnosed with lobar pneumonia.
- Chest radiography showed right middle lobe pneumonic infiltration, but antibiotic treatment yielded no clinical improvement.
- Computed tomography revealed extensive lymphadenopathy in the hilar, pretracheal, and subcarinal regions.
Findings:
- Tuberculin and acid-fast bacilli tests were negative, but the quantiferon test was positive.
- The infant's mother was diagnosed with active tuberculosis, indicating a likely source of infection.
- The case highlights that primary cavitary tuberculosis can occur in infants, despite its rarity.
Implications:
- Infant tuberculosis diagnosis requires considering atypical presentations beyond typical lymphadenopathy and lung changes.
- Advanced imaging like CT scans is crucial for identifying subtle or unusual TB manifestations in infants.
- Prompt diagnosis and treatment are vital, especially when family members have active tuberculosis, to prevent severe outcomes in infants.
Abstract:
In infants, tuberculosis usually progresses as hilar lymphadenopathy and parenchyma changes in lungs; associating cavitary lesions are rare. A six-month-old infant was admitted to our hospital with fever. Physical examination revealed decreased breathe sounds in the right lung. Chest radiograph showed pneumonic infiltration in the right middle lobe. The patient was hospitalized with a diagnosis of lobar pneumonia and antibiotic treatment was started. On the sixth day, because no clinical improvement was observed in the patient, computerized thorax tomography was performed. Tomography revealed multiple lymphadenopathies in the right hilar pretracheal and subcarinal region. The patient's tuberculin and acid-resistant bacteria tests were negative; however, the quantiferon test was positive. Family screening revealed active tuberculosis in the mother. Tuberculosis in infants may present with unusual clinical and radiologic findings, and primary cavitary tuberculosis can also be seen in this age group.
More Related Videos
08:48Separation and Fractionation of Culture Filtrate Proteins (CFPs) from Mycobacterium tuberculosis
Published on: July 11, 2025
06:14Separation and Fractionation of Cell Wall and Cell Membrane Proteins from Mycobacterium tuberculosis for Downstream Protein Analysis
Published on: September 26, 2025
Related Concept Videos
Pulmonary Tuberculosis I
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...
Pulmonary Tuberculosis II
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 V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Drug Dosing: Infants and Children
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV
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...