UC Davis Dermatology Online Journal Title Papular angiolymphoid hyperplasia and lymphoplasmacytic plaque: a clinical and histological spectrum Publication Date Volume 22 Number 4 April 2016 Case presentation Papular angiolymphoid hyperplasia and lymphoplasmacytic plaque: a clinical and histological spectrum

Y Yeo, H Oon, J Lee, J Pan, Y Mok, S Ng, Yi Wei, Yeo Singapore
2016 unpublished
Acral pseudolymphomatous angiokeratoma of children (APACHE) is a rare form of cutaneous pseudolymphoma characterized by angiomatous papules with a predilection for the acral regions of children. Classically, a dense dermal lymphocytic infiltrate composed of both T and B cells is seen in histological specimens, together with prominent vessels lined by plump endothelial cells. Increasing evidence suggests that this condition is neither necessarily acral, pseudolymphomatous, nor angiokeratomatous.
more » ... angiokeratomatous. It may not always be a pediatric disease. Therefore, the correctness of its nomenclature has been questioned. Herein, we report three cases whose clinical and histological features were consistent with the diagnosis of APACHE. To our knowledge, this is the first report of APACHE from Southeast Asia. We also discuss why we believe "APACHE" to be a misnomer and support "papular angiolymphoid hyperplasia" as a more accurate and encompassing term. In addition, we illustrate a case with significant overlapping features with lymphoplasmacytic plaque in children, suggesting that both entities may exist on a clinical and histological spectrum.
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