Abstract
IntroductionLupus vulgaris is the most common form of cutaneous tuberculosis. It may easily be overlooked if a proper differential diagnosis is omitted.Case presentationA 46-year-old Turkish woman presented with a 42-year history of erythamatous plaque on her left arm. Ziehl–Neelsen and periodic acid-Schiff stains did not show any acid-fast bacilli. Culture from a biopsy specimen was negative for Mycobacterium tuberculosis. The result of a polymerase chain reaction-based assay for Mycobacterium was negative. Histopathologic findings revealed a tuberculoid granuloma containing epithelioid cells, lymphocytes and Langerhans-type giant cells. A diagnosis of lupus vulgaris was made by clinical and histopathologic findings.ConclusionsThe lesion improved after antituberculous therapy, confirming the diagnosis of lupus vulgaris.
Highlights
Lupus vulgaris is the most common form of cutaneous tuberculosis
The lesion improved after antituberculous therapy, confirming the diagnosis of lupus vulgaris
We report the case of a patient with long-lasting Lupus vulgaris (LV) mimicking hemangioma
Summary
Lupus vulgaris (LV) is the most common clinical type of cutaneous tuberculosis (TB) in adults [1, 2]. Case presentation A 46-year-old Turkish woman presented to our institute with a red, well-demarcated plaque on her left arm. She said the lesion had appeared when she was 4 years old. A doctor who our patient had visited when the lesion first appeared had said that the lesion was a birthmark. The results of venereal disease research laboratory (VDRL) and human immunodeficiency virus (HIV) tests were negative. Culture from the biopsy specimen was negative for Mycobacterium tuberculosis. A real-time polymerase chain reaction (PCR)-based assay of the biopsy specimen gave a negative result for Mycobacterium. Lupus vulgaris was diagnosed in our patient on the basis of the clinical and histopathologic findings. The cutaneous lesions started to regress within 3 months and had completely healed with atrophic scarring and postinflammatory hyperpigmentation after 9 months (Fig. 3)
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