Delayed Diagnosis in a Case of Lupus Vulgaris with Unusual Localization

Abstract

Lupus vulgaris is the most common form of cutaneous tuberculosis, and the usual sites of involvement are the head and neck. We present a forty-six-year-old woman with lupus vulgaris on the external surface of the left leg and foot, an unusual site. Based on histopathological and clinical features, this case was diagnosed as lupus vulgaris with unusual localization.

Lupus Vulgaris: A New Look at an Old Symptom – The Lupoma Observed with Dermoscopy

“…A correct diagnosis and an adequate treatment are crucial because LV, if left untreated, carries the risk of local destruction or development of malignant skin tumors including squamous cell carcinoma and, less commonly, basal cell carcinoma and cutaneous sarcoma [6][7][8][9][10] . Dermoscopy is a noninvasive diagnostic tool allowing the visualization of pigmented and vascular structures that are not visible to the unaided eye [11] .…”

"Turkey Ear" as a cutaneous maniestation of tuberculosis

“…[4] In Europe, over 80% of lesions are on the head and neck, particularly around the nose. [58] LV lesions tend to be chronic, with new plaques appearing at the site of regressed atropic ones, and require appropriate therapy for complete healing. [2] Otherwise, they can persist for many years and even decades.…”

“…[146–8] However, the most confusing diagnosis with lupus vulgaris of earlobe is lupus pernio. Lupus pernio is a relatively common skin manifestation of sarcoidosis characterized by slowly progressive bluish-red or violaceous indurated plaques and nodules that usually affect the nose, cheeks, ears, fingers, hands and toes.…”

Orificial tuberculosis of the lip: a case report and review of the literature

“…1,2 Cutaneous tuberculosis (CT) is an uncommon form (2-10%) of extrapulmonary tuberculosis. 3,4 Orificial tuberculosis (OT) is an extremely rare form of CT, 5,6 comprising 2% of CT and 0.1-1% of all clinical presentations of tuberculosis. 7,8 CT continues to be one of the most elusive and difficult forms of tuberculosis to diagnose: it has a wide spectrum and it is difficult to obtain a microbiologic confirmation.…”