A Case of Buccal Pilomatricoma Removed Through Intraoral Incision

Pilomatricoma(or calcifying epithelioma) is a not common benign solitary tumor originated from outer root sheath cell of hair follicle or hair follicle of sebaceous glands. The tumor usually presents as an asymptomatic, hard, superficial located, and skin colored to reddish blue cutaneous mass. Most of the tumors are less than 10mm in diameter and adherent to the skin. Recently, 48-year-old man presented with cheek mass. The tumor was 2.6cm sized and located at the subcutaneous layer of cheek on CT scan. The tumor was clearly removed via transoral approach with buccal incision leaving no wound on face. The mass was confirmed as pilomatricoma on pathologic examination. Herein, we report our experience with literature review.

Benign proliferative pilomatricoma over sternum: a rare case

Pilomatricoma is a benign, uncommon, subcutaneous tumor arising from the outer root sheath cell or hair matrix cells. Pilomatrixoma, benign calcifying epithelioma of Malherbe, trichomatricoma are synonyms for pilomatricoma. They occur mostly on head, neck and upper limb extremities. Histologically they classically consist of peripheral basiloid cells and central enucleated ghost or shadow cells. Malignant changes are rare in pilomatricomas. However, the proliferative variety is aggressive and considered to be precursor of malignancy. Here we present a case of benign proliferative pilomatricoma over sternum for which the patient underwent wide local excision, diagnosis was later confirmed by histopathological examination. We have not come across any cases of pilomatricoma occurring over sternum in literature.