Primary-Inoculation Tuberculosis of Keloid Presenting as Cold Abscess

Abstract

Abstract:Primary-inoculation tuberculosis of the skin resulting from direct inoculation is a rare disease first described by Laennec. Mycobacterium cannot penetrate intact skin and requires a breach in the skin to enter. The disease usually remains localized in those patients with acquired immunity from previous infection with Mycobacterium tuberculosis. The patient will develop a papule or nodule that will eventually ulcerate 2 or 3 weeks after the exposure. Lesion may resolve spontaneously or progress into a lupus vulgaris like picture. Rarely, it may lead to disseminated tuberculosis.We report a case of primary inoculation tuberculosis of keloid presenting as cold abscess.

Mycobacterium tuberculosis and the search for the impossible truth

“…The ability of accidentally inoculated Mycobacterium tuberculosis to cause skin and soft tissue infections has been known for almost two centuries, yet it was, and remains, a rare form of tuberculosis (TB) [1]. Because M. tuberculosis is assumed to have very limited survival outside the host, environmental reservoirs are not felt to have any role in TB transmission [2].…”