A rare clinic type of angiokeratoma: angiokeratoma circumscriptum naeviforme

Skin biopsy revealed hyperkeratosis and acanthosis of the stratified squamous epithelium, congestion and dilated vascular structures in papillary dermis (Fig. 4 [See PDF]). Histopathologically, it is characterized by dilated capillaries and red blood cell-filled spaces extending well into the reticular dermis and subcutaneous tissue with an overlying hyperkeratotic epidermis [8]. Calonje E, Elder DE, Elenitsas R, Johnson BL, Murphy GF, Xu X. Vascular Tumors: tumors and tumor-like conditions of blood vessels and lymphatics Lever’s Histopathology of Skin 2009; 10th ed Philadelphia Lippincott Williams and Wilkins publishers 101