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Pulmonary Interstitial Emphysema
Joseph Junewick, MD FACR
over 6 years ago
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ARSt Case Repository

Pilomatricoma

Case Detail

Anatomy: Musculoskeletal
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Neoplasia Benign
Created: over 8 years ago
Updated: over 8 years ago
Tags: PEDS
Modality/Study Types: MR
Activities:
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History

Child with palpable mass of forearm; rule out ganglion.


Case Images


Diagnosis

Pilomatricoma

Findings

MR – Homogeneous T1 isointense, T2 and IR hyperintense, and enhancing cutaneous/subcutaneous lesion with poorly defined margins sparing the muscular fascia.

Discussion

Pilomatricoma is a rare benign tumor originating from pleuripotent cells which normally differentiate toward hair matrix cells. These are typically seen in childhood with a mean age of presentation of 8 years. Females are affected twice as often as males. The head and neck region is the most common (especially in the periorbital region) accounting for more than half of the cases; the upper extremity accounts for about a third of cases. Surgical excision with clear margins is the treatment of choice.

Reference

De Beuckeleer LHL, De Schepper AMA, Neetens I. Magnetic Resonance imaging of Pilomatricoma. Eur Radio (1996); 6:72-75.

Cigliano B, et al. Pilomatricoma of Childhood: A Retrospective Study from Three European Medical Centres. Eur J Pediatrics (2005); 164(11):673-677.

Hseih T, et al. Pilomatricoma: Magnetic Resonance Imaging and Pathological Evaluation. JCAT (2008); 32(2):320-323.



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