Non-healing Wounds: A Delayed Wound Infection by Mycobacteri
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Non-healing wound causes significant morbidity and mortality of patients. One of the rare causes behind non-healing wound infection is M. tuberculosis which often remains undiagnosed. The aim of this study was to determine tuberculosis as one of the causes of non-healing wounds.

Wounds that did not heal even after secondary suturing and tissue biopsies were sent for histopathological examination. The cases diagnosed with tuberculosis received anti-tubercular treatment. Follow-up was done after 7 and 14 days of treatment, and response was seen in terms of reduction in inflammation and discharge.

Of the 36 patients, five patients had tubercular infection out of which one patient revealed tubercular granuloma, two revealed epithelioid cells, Langhans cells, whereas two revealed non-specific chronic inflammation in histopathology.

A high degree of suspicion and tissue biopsy is required in case of delayed or non-healing wounds to diagnose tuberculosis as a cause. Even if typical tubercular granuloma is not visible in histopathology, the presence of epitheloid cells, giant cells, Langhans cells or predominant lymphocytic infiltrate equally suggests tubercular tissue infection.

Source: https://link.springer.com/article/10.1007/s13224-020-01320-w
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