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Case Reports
. 2020 Nov;47(11):1054-1057.
doi: 10.1111/cup.13793. Epub 2020 Sep 6.

A rare case of lupoid leishmaniasis defying diagnosis for a decade

Jeff Gehlhausen  1 , Cosmas Sibindi  2 , Christine J Ko  1 , Matthew Grant  2 , Amanda Zubek  1
Affiliations
Case Reports

A rare case of lupoid leishmaniasis defying diagnosis for a decade

Jeff Gehlhausen et al. J Cutan Pathol. 2020 Nov.

Abstract

Cutaneous leishmaniasis (CL) is a common disease affecting millions in endemic areas worldwide. We present a case of lupoid leishmaniasis, a rare variant of CL, which clinically mimicked sarcoidosis and/or granulomatous rosacea for 10 years until ultimate diagnosis. An 82-year-old U.S. citizen with an extensive travel history presented with a 10-year history of facial plaques on the cheeks and was previously diagnosed and treated as sarcoidosis. Multiple biopsies (previously and at presentation) revealed tuberculoid granulomas with negative special stains for microorganisms and negative sterile tissue cultures for acid-fast bacilli, bacteria, and fungal organisms. A diagnosis of granulomatous rosacea was rendered and multiple medical therapies were attempted, none with sustained improvement. Repeat biopsy of a new lesion revealed intracellular organisms consistent with leishmaniasis, which was confirmed by polymerase chain reaction (PCR). Lupoid leishmaniasis is a rare presentation of CL including facial plaques that can mimic granulomatous diseases affecting the face including sarcoidosis and granulomatous rosacea. CL can sometimes be challenging to diagnose through standard histopathologic examination; immunohistochemistry for CD1a can be used to augment tissue-based examination and PCR should be sent early in cases with sufficient concern.

Keywords: Leishmania braziliensis; cutaneous leishmaniasis; lupoid.

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