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Cervical Tuberculosis Mimicking Cervical Cancer in a Postmenopausal Woman
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Resumo(s)
Cervical tuberculosis is a rare form of genital tuberculosis. A case of a 73-year-old woman who presented with cervical wall thickening on magnetic resonance imaging, suggesting an invasive malignant neoplasm, is documented. Cervical cone excision was performed for histopathological study. Microscopy showed epithelioid granulomas, without appreciable caseous necrosis, in the wall of the uterine cervix, associated with erosion of the overlying cervical mucosa. Histochemical stains for microorganisms (Ziehl–Neelsen, Grocott, and Warthin–Starry) were negative. Immunohistochemistry for Treponema pallidum revealed scarce, spiral-shaped bacilli, which raised the diagnostic possibility of secondary syphilis. The serological study for syphilis was negative, however. Polymerase chain reaction (PCR) tests for Mycobacterium tuberculosis and Treponema pallidum were performed in the formaldehyde-fixed, paraffin embedded tissue and resulted positive for Mycobacterium tuberculosis and negative for Treponema pallidum, confirming the diagnosis of cervical tuberculosis. Our objective was to report a rare case of cervical tuberculosis, discussing the advantages and limitations of complementary techniques used in the pathological diagnosis of infectious agents and highlighting diagnostic pitfalls. In conclusion, correct microbiological diagnosis requires the implementation of integrated workflows employing complementary techniques in a multidisciplinary setting to improve the accuracy of histopathological examination in infectious diseases.
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Palavras-chave
cervix immunohistochemistry Mycobacterium tuberculosis PCR Treponema pallidum Microbiology (medical) SDG 3 - Good Health and Well-being