a giant lymphangioma circumscriptum on the flank: case report

Lymphangioma circumscriptum is a rare congenital proliferation of lymphatic vessels that may occur anywhere on the skin and mucous membranes. based on the depth and the size of abnormal lymph vessels, these lesions are divided into two groups: the superficial vesicles are called lymphangioma circumscriptum and the more deep-seated group includes cavernous lymphangioma, cystic hygroma, and benign lymphangioendothelioma. the differential diagnosis of lymphangioma includes herpes zoster, herpes simplex, molluscum contagiosum, cutaneous melanoma, dermatitis herpetiformis, and viral warts. herein, we report a rare case of giant cutaneous lymphangioma circumscriptum with emphasis on histopathology and differential diagnosis. our case was a 14-year-old boy with a history of multiple, clear, pink, red, and brown vesicles protruded as a patch of wart-like growths on the flank’s skin since the 6 months of age. histopathologic examination indicated presence of multiple thin-walled dilated lymphatic spaces in the papillary dermis lined with a single layer of endothelial cells filled with finely granular hyaline material.