J. Sassmannshausen et M. Chaffins, Pilomatrix carcinoma: A report of a case arising from a previously excisedpilomatrixoma and a review of the literature, J AM ACAD D, 44(2), 2001, pp. 358-361
A 63-year-old woman was evaluated in 1995 for a nodule an the left parietal
scalp. Biopsy revealed pilomatrixoma. The lesion was treated by curettage.
The patient returned to the clinic in March of 1998 with a 2-month history
of a rapidly growing nodule at the surgical site. Histology showed changes
consistent with pilomatrix carcinoma. We will discuss the malignant transf
ormation of a common hair matrix tumor and review the literature.