collagenous fibroma

collagenous fibroma

A rare benign, well-circumscribed tumour, usually measuring 1–3 cm, which is more common in males in their 50s to 70s. It is predominantly peripheral and favours the arm, shoulder, neck and other sites; if adjacent to bone, it causes erosion.

Clinical findings
Patients present with a painless subcutaneous mass; one-fourth of cases involve skeletal muscle.

Management
Local excision.
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