Clinico-histopathological correlation and the treatment response of 20 patients with cutaneous tuberculosis.

Cutaneous tuberculosis (TB) can mimic other granulomatous diseases clinically and histopathologically. This case series relates images and workup of 20 patients who were histopathologically and therapeutically confirmed to have cutaneous TB. Although positive results of ESR, Mantoux reactivity, and TB cultures facilitate the clinical diagnosis, negative results should not exclude the diagnosis of cutaneous TB. An alternative cause should be considered if the clinical response to anti-TB drugs is inapparent within 2 months.