|Home | About | Journals | Submit | Contact Us | Français|
Tuberculosis of the stomach and colon is rare, and there are no pathognomonic clinical, radiological or gross morphological features. Unless facilities for endoscopic biopsy are available surgical intervention is required to clinch the diagnosis and to treat the complications. One case each of gastric and colonic tuberculosis is reported.
Gastric tuberculosis is rare, being seen only in 0.5 to 1% of patients with abdominal tuberculosis [1, 2]. Isolated segmental or extensive lesions of the colon, without enteritis or involvement of the anorectum is found in only 1 to 3% of patients with gastro-intestinal tuberculosis [3, 4].
A case each, of gastric and colonic tuberculosis is reported.
A 35 years old female, presented with epigastric pain, post prandial fullness and self induced vomiting of 3 years duration. There was no heartburn, waterbrash, haematemesis or malena. She had been treated with H-2 receptor antagonists with no relief. Clinical examination did not reveal any abnormality except for tenderness at the duodenal point. Investigations revealed relative lymphocytosis; stools were negative for occult blood. Chest radiography and ultrasound scan [USS] did not reveal any abnormality. Barium meal examination showed a persistent annular filling defect in the pre-pyloric region of the stomach, infiltrating the head of pancreas (Fig. 1A). Supra-pyloric lymph nodes were enlarged, firm and discrete. Pyloric canal was narrowed. A Bilroth II partial gastrectomy and cholecysto-jejunostomy was performed. Histopathology revealed a granulomatous lesion of the pylorus with evidence of caseation, epithelioid cells and Langhan's giant cells in all layers of the stomach wall and the lymph nodes (Fig 1B). With a final diagnosis of tuberculous stricture of the pylorus, she was put on anti-tubercular chemotherapy for 7 months and had an uneventful recovery.
A 57 years old female, presented with distention of abdomen off and on, of one year; progressive constipation of 6 months; and a lump in the right lower abdomen of 3 months duration. She was poorly nourished, pale and had no lymphadenopahty. A firm, globular, non-tender, freely mobile mass, 8 × 10 cm, was palpable in the right iliac fossa. There was no hepato-splenomegaly or ascites. Investigations revealed, hemoglobin 9.5 gm/dl; total leukocyte count of 9000/cmm; differential leukocyte count P 39, L 56, E 4, M 1; and an erythrocytic sedimentation rate of 10 mm fall in first hour. Occult blood was present in the stools. Chest radiography showed a calcified lesion in the left upper zone suggestive of old healed pulmonary tuberculosis, Barium enema revealed a 10 cm long stricture in te right transverse colon [Fig 2) and the USS did not show any mass lesions in the liver or free fluid in the peritoneal cavity. With a provisional diagnosis of carcinoma transverse colon, an exploratory laparotomy was done which confirmed the site of the mass. Firm discrete lymph nodes were present in the mesocolon and the gastrocolic omentum. There were no peritoneal seedlings or serosal tubercles. A physiological resection of the transverse colon along with the mesocolon and gastro-colic omentum was performed. Histopathology revealed a non-caseating granulomalous lesion of the transverse colon but the lymph nodes revealed typical tubercles with central ceseation surrounded by epithelioid and Langhan's giant cells. With a final diagnosis of tuberculous stricture of transverse colon she was put on anti-tubercular chemotherapy for 7 months and had an uneventful recovery.
Gastric tuberculosis commonly involves the lesser curvature and the antrum, in the form of solitary or multiple ulcers or as a non-ulcerative granulomatous mass and may present as pyloric obstruction, perforation, or rarely haematemesis. Not only is differentiation from peptic ulcers, chronic gastritis and carcinoma of the stomach difficult, 10% of these patients have co-existant gastric carcinoma . Radiological features are non-specific but the simultaneous involvement of pylorus and duodenum are suggestive of a tubercular pathology. Endoscopic biopsy may obviate the need for a laparotomy .
In colonic tuberculosis, symptoms depend upon the segment involved, constipation being frequent with proximal involvement, diarrhoea alternating with constipation being more common when the disease involves the left colon. Tenderness, lump and intestinal obstruction are the usual presentations. Sigmoid and transverse colon are the most common sites. Occult blood is frequently present in the stools but stool cultures for acid fast bacilli are time consuming and unreliable . In the absence of ileal involvement, there are no pathognomonic radiological or gross morphological features to distinguish the strictures or ulcero-hypertrophic lesions, of colonic tuberculosis from those of malignancy or Crohn's disease except for the multiplicity of lesions when present, and their dissimilarity [3, 4, 7]. A negative colonoscopic or laparoscopic biopsy does not rule out the disease as the typical caseating granulomata may be present in the lymphnodes only, the colon showing non-specific changes [4, 8].
Both gastric and colonic tuberculosis respond well to chemotherapy , and resectional surgery should be considered only to treat the complications such as pyloric or intestinal obstruction, haemorrhage or perforation . However, because of the difficulty in distinguishing these lesions from malignancy by non-invasive means these patients almost invariably have to be explored . In lesions difficult to distinguish from malignancy on exploration a radical resection is advised .