Three cases of giant pilomatrixoma – considerations for diagnosis and treatment of giant skin tumours with abundant inner calcification present on the upper body

Autor: Yuko Higuma, Makoto Yamauchi, Kanae Ikeda, Satoshi Urushidate, Takatoshi Yotsuyanagi, Tamotsu Saito
Rok vydání: 2010
Předmět:
Zdroj: Journal of Plastic, Reconstructive & Aesthetic Surgery. 63:e519-e524
ISSN: 1748-6815
DOI: 10.1016/j.bjps.2009.12.006
Popis: Summary Background Pilomatrixoma frequently occurs as a solitary, small tumour on the face or upper extremities of people younger than 20 years. Methods We report three cases of giant pilomatrixoma. In all these cases, outward appearances and imaging investigations suggested malignant tumours. Preoperative biopsies suggested that case 1 was a basal cell carcinoma, but cases 2 and 3 had no malignant features on biopsy. Two of the cases experienced rare complications – hypercalcaemia caused by parathyroid-related protein (PTHrP) production and multiple occurrences. Results All three tumours were removed with a 1–3-cm margin. The postoperative histopathologies showed pilomatrixoma in all three cases. Conclusions Rarely, pilomatrixoma develops to a giant size with various atypical outward appearances consistent with a malignant tumour. Preoperative clinical appearances frequently lead to misdiagnosis, and preoperative examinations are unreliable. Therefore, when a giant tumour with abundant inner calcification is present in a young patient, the possibility of a pilomatrixoma should be considered.
Databáze: OpenAIRE