[Insulated leg pilomatrixoma: a rare localization]

Area of Science:

• Dermatology
• Surgical Pathology

Background:

• Pilomatrixoma is a benign neoplasm originating from the hair follicle matrix.
• It predominantly affects the pediatric population, with a higher incidence in head and neck regions.
• Misdiagnosis is common due to its varied presentation, often mistaken for other cutaneous lesions.

Observation:

• This report details an unusual case of pilomatrixoma occurring on the leg of an adult patient.
• The lesion was surgically excised.
• The patient experienced no recurrence post-surgery.

Findings:

• The case underscores that pilomatrixoma, though rare, can occur in exceptional locations like the extremity in adults.
• Surgical management appears effective in achieving complete resection and preventing recurrence.
• Accurate diagnosis requires high clinical suspicion, especially in atypical presentations.

Implications:

• This observation expands the known anatomical distribution of pilomatrixoma.
• It reinforces the importance of considering pilomatrixoma in the differential diagnosis of leg masses, even in adults.
• Successful surgical treatment suggests a favorable prognosis for extremity pilomatrixomas.