Adult cutaneous myofibroma.

Area of Science:

• Dermatopathology
• Surgical Pathology
• Oncology

Background:

• Cutaneous myofibromas are rare benign soft tissue tumors.
• Adult presentations are less common than in pediatric populations.
• Distinguishing myofibromas from other spindle cell neoplasms is crucial.

Observation:

• A 63-year-old male presented with a year-and-a-half history of an asymptomatic, slow-growing right lower limb swelling.
• The lesion exhibited a lobular architecture.
• Histopathology revealed a biphasic pattern comprising spindle-shaped cells and hemangiopericytoma-like areas at the periphery.

Findings:

• The histopathological features were consistent with an adult cutaneous myofibroma.
• The biphasic pattern and lobular arrangement are key diagnostic indicators.
• The case emphasizes the role of detailed histopathological examination.

Implications:

• Accurate histopathological diagnosis is essential for appropriate patient management.
• Recognition of this rare entity prevents misdiagnosis and unnecessary aggressive treatment.
• Further research into adult cutaneous myofibroma pathogenesis may be warranted.