Esophageal tuberculosis in a patient with acquired immune deficiency syndrome: a rare presentation

 

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Esophageal tuberculosis is rare and is usually secondary to infection of adjacent anatomical sites, such as the lungs [1] or mediastinal lymph nodes [1] [2]; it has occasionally been reported as a single lesion [3]. There have been a few reports in the literature of esophageal tuberculosis in patients with acquired immune deficiency syndrome (AIDS) [4] [5]. We report a case of histologically proved esophageal tuberculosis occurring in an AIDS patient, where this was the only manifestation of tuberculosis. We obtained written informed consent from the patient to present the case.

A 37-year-old man with AIDS and alcoholic hepatic disease presented with dysphagia, odynophagia, and vomiting for the past 1 month. His chest radiograph was normal and abdominal ultrasound revealed an enlarged periaortic lymph node. Esophagogastroduodenoscopy showed a depressed lesion with a granular fundus affecting the entire circumference of the esophagus, extending to the cardia. This lesion had a papillomatous appearance and a friable surface. A superficial ulcer, 3 cm in diameter, was located close to the cardia in the posterior wall, extending to the gastric body. There was thick fibrin in the fundus, and the ulcer had irregular borders, with signs of infiltration (Figure [1]). Histopathological examination showed a chronic, tuberculoid, granulomatous inflammatory process and Ziehl-Neelsen staining revealed acid- and alcohol-fast bacilli, suggestive of Mycobacterium (Figure [2]). The patient was started on tuberculostatic drugs and his symptoms were relieved, but 1 month later he developed acute intestinal obstruction and he died immediately after undergoing surgery to relieve the obstruction.

Figure 1 Endoscopic views of the esophagus and stomach, showing a depressed circumferential lesion of the esophagus, 33 cm from the upper dental arch (a); nodularities in the distal esophagus (b); a juxtacardiac gastric ulcer (c); and extension of the juxtacardiac gastric ulcer through to the lesser curvature of the upper stomach (d).

Figure 2 Histopathological examination of the esophageal ulcer showed evidence of a chronic granulomatous inflammatory process in the submucosa on hematoxylin and eosin staining (a); and the presence of acid- and alcohol-fast bacilli with morphological characteristics of Mycobacterium on Ziehl-Neelsen staining (b).

In this case the esophagus was possibly affected by contiguous spread from lymph nodes. The intestinal obstruction might have been caused by a pre-existing abdominal lesion which progressed to fibrosis and stenosis in the ileocecal region after the antituberculous treatment had been initiated. Although esophageal involvement by tuberculosis is rare, especially in the absence of a pulmonary lesion, this possibility should be considered in the differential diagnosis of esophageal ulcers in patients with AIDS.

Endoscopy_UCTN_Code_CCL_1AB_2AC_3AZ

References

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G. Castro, M. D.

Divisão de Doenças Infecciosas e Tropicais
Departamento de Clínica Médica
Faculdade de Medicina de Ribeirão Preto
Universidade de São Paulo

Av. Bandeirantes 3900
14048-900 Ribeirão Preto
São Paulo
Brasil

Fax: +55-16-3633-6695

Email: gcastro@hcrp.fmrp.usp.br