Video Experimental Relacionado
Updated: Jul 6, 2026

08:46
Isolation and Culture of Human Fungiform Taste Papillae Cells
Published on: May 17, 2012
15.0K
Un rompecabezas granulomatoso: Linfadenitis tuberculosa sin indicios de BAAR
Anupriya Sah1, Iccha Kumar Maharjan2, Pragya Regmee2
1College of Dental Surgery BP Koirala Institute of Health Sciences Dharan Nepal.
Clinical case reports
|February 6, 2026
Resumen
La linfadenitis tuberculosa (LTB), una forma común de tuberculosis extrapulmonar, puede presentarse de forma atípica. La citología por aspiración con aguja fina (PAAF) ayuda al diagnóstico temprano, incluso con pruebas de Gene Xpert y BAAR negativas.
Área de la Ciencia:
- Medicina
- Enfermedades Infecciosas
- Oncología
Sus antecedentes:
- La linfadenitis tuberculosa (LTB) es la manifestación más frecuente de tuberculosis extrapulmonar (TEP), y representa entre el 20% y el 40% de los casos.
- Las presentaciones atípicas de LTB en cabeza y cuello pueden simular otras afecciones graves, lo que plantea desafíos diagnósticos.
Objetivo del estudio:
- Informar un caso de LTB con una presentación inusual en la región de cabeza y cuello.
- Destacar la utilidad diagnóstica de la citología por aspiración con aguja fina (PAAF) en la LTB, especialmente cuando las pruebas convencionales son negativas.
Principales métodos:
- Presentación de caso de un varón de 45 años con hinchazón progresiva de la mandíbula.
- El estudio diagnóstico incluyó un diagnóstico erróneo inicial de malignidad, seguido de examen histopatológico (EH), PAAF, tinción de bacilos ácido-alcohol resistentes (BAAR) y pruebas de Gene Xpert.
- El tratamiento implicó un régimen antituberculoso de dos meses.
Principales resultados:
- La consulta inicial sugirió carcinoma; el examen histopatológico (EH) reveló una lesión granulomatosa tuberculosa.
- La PAAF indicó LTB, pero la tinción de BAAR y Gene Xpert fueron negativos para Mycobacterium tuberculosis.
- El paciente mostró una mejoría significativa con un régimen de dos meses de fármacos antituberculosos.
Conclusiones:
- Las presentaciones atípicas de LTB en cabeza y cuello requieren un alto índice de sospecha.
- La PAAF es una herramienta valiosa, rápida y mínimamente invasiva para diagnosticar LTB, incluso con resultados negativos de la tinción de BAAR y Gene Xpert.
- El diagnóstico y tratamiento tempranos de la LTB son cruciales para obtener resultados favorables para el paciente.
Más Videos Relacionados
Videos de Conceptos Relacionados
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...
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
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...
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
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:
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV
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...
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...
Pulmonary Tuberculosis V
Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
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 progression...
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 progression...
Tuberculosis
Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...

