Abdominal Tuberculosis

Abdominal tuberculosis is a significant form of extrapulmonary tuberculosis (TB) that primarily affects the abdominal organs, including the gastrointestinal tract, peritoneum, abdominal lymph nodes, and other intra-abdominal structures. Though rare in developed countries, it remains a common concern in regions where TB is endemic like India. Early recognition and treatment are crucial to prevent complications and ensure recovery.

Abdominal tuberculosis refers to TB infection within the abdominal cavity. It can involve:

• Abdominal Lymph NodesThe most common form, particularly affecting mesenteric lymph nodes.
• Peritoneal TuberculosisInvolves the lining of the abdominal cavity, leading to ascites (fluid buildup).
• Gastrointestinal TBAffects the intestines, most commonly the ileum and cecum.
• Solid Organ TBRarely, it can involve the liver, spleen, or pancreas. Usually multiple sites can be involved at a time.

Abdominal tuberculosis is caused by Mycobacterium tuberculosis, which spreads through:

• Hematogenous (bloodstream) spread from a primary TB site, usually the lungs.
• Ingestion of infected sputum or contaminated milk in rare cases.
• Lymphatic spread, leading to abdominal lymph node involvement.

Symptoms can vary depending on the affected area but often include:

• Persistent abdominal pain or discomfort.
• Abdominal swelling or a palpable mass.
• Fever and night sweats.
• Weight loss and poor appetite.
• Altered bowel habits, such as diarrhea or constipation.
• In severe cases, intestinal obstruction or perforation.

Accurate diagnosis involves a combination of clinical evaluation, imaging studies, and laboratory tests:

• ImagingUltrasound or CT scan can reveal enlarged abdominal lymph nodes, thickened intestinal walls, or ascitic fluid.

Laboratory Tests:

• Tuberculin skin test or IGRA to detect TB infection.
• Analysis of ascitic fluid for elevated protein levels, lymphocyte predominance, and ADA (adenosine deaminase) levels.
• BiopsyLymph node or intestinal biopsy may confirm the presence of TB granulomas.
• Molecular TestsGeneXpert or PCR for Mycobacterium tuberculosis.

• Anti-Tuberculosis Therapy (ATT)A 6–9 month regimen of TB medications forms the cornerstone of treatment.
• Nutritional SupportAdequate nutrition to aid recovery and boost immunity.
• SurgeryRequired in complicated cases, such as intestinal obstruction, perforation, or abscess formation.

With timely diagnosis and proper treatment, children with abdominal tuberculosis have a good prognosis. However, delayed treatment can lead to complications and long-term health issues.

It is caused by Mycobacterium tuberculosis, which spreads from the lungs or other primary TB sites to the abdominal cavity.

Diagnosis involves imaging studies (e.g., ultrasound, CT scan), fluid analysis, biopsy, and molecular tests like GeneXpert.

Yes, with a complete course of anti-tuberculosis therapy, most children recover fully.

Signs include abdominal pain, swelling, and sometimes a palpable mass in the abdomen.

Small lymph nodes up to less than 2 cm in size can be normally found inside the abdomen of children. Large lymph nodes more than 2 cm especially if multiple, conglomerate or mattered and necrotic are suggestive of tuberculosis.