Diverse clinical nature of cavernous lymphangioma: report of two cases.

Lymphangioma are uncommon hamartomatous congenital malformations of the lymphatic system that involve skin and subcutaneous tissue. They have marked predilection for head and neck region in 75% of cases. Around 50% of lesions are noticed at birth and 90% by 2 years of age. Oral lymphangioma may be present in tongue, palate, buccal mucosa, gingiva and lip. Lymphangioma are of 3 types-simplex, cavernous and cystic lymphangioma. Cavernous lymphangioma is usually seen in fairly dense tissue such as the tongue.We report two unusual cases of cavernous lymphangioma in 24-26 years age group with the site of involvement being floor of the mouth extending into the submandibular triangle in the first case, and the second manifesting as a bluish red swelling on the labial mucosa.