Case Number : Case 978 - 24th March Posted By: Guest

Trichoblastoma

Agree. Micronodular Trichoblastoma.

We r still waiting for the answer of the interesting previous case number 977 ( Dr Carr)!!

Funny because I posted it first thing this morning! Sorry for delay - still on my hols.

This is a small nodular trichoblastoma. Lesions at this site, particularly upper lip, can present as ill-defined plaque-like lesions and appear quite extensive and "invade" down in to skeletal muscle. Moh's surgery may be required to remove them. Some authors (wrongly in my opinion) have regarded them as low grade malignant based on deeply infiltrative and asymmetrical growth.

Rofagha R, Usmani AS, Vadmal M, Hessel AB, Pellegrini AE. Trichoblastic carcinoma: a report of two cases of a deeply infiltrative trichoblastic neoplasm. Dermatol Surg. 2001 Jul;27(7):663-6.

Altman DA, Mikhail GR, Johnson TM, Lowe L. Trichoblastic fibroma. A series of 10 cases with report of a new plaque variant. Arch Dermatol. 1995 Feb;131(2):198-201.

Cowen EW, Helm KF, Billingsley EM. An unusually aggressive trichoblastoma.J Am Acad Dermatol. 2000 Feb;42(2 Pt 2):374-7.

Trichoblastoma

Yes micro nodular trichoblastoma

Small nodular trichoblastoma.

Trichoblastoma.