Metastatic atypical fibroxanthoma.

Area of Science:

• Dermatopathology
• Oncology
• Surgical Pathology

Background:

• Atypical fibroxanthoma (AFX) is a rare soft tissue sarcoma.
• AFX typically exhibits low-grade malignant potential with infrequent metastasis.

Observation:

• This report details a unique case of AFX with extensive metastasis.
• The patient's condition ultimately led to a fatal outcome.

Findings:

• The case underscores the importance of considering AFX in the differential diagnosis of undifferentiated pleomorphic sarcomas.
• Key clinical, immunohistochemical, and genetic markers aiding in AFX diagnosis are discussed.

Implications:

• Accurate and timely diagnosis of AFX is crucial for patient management.
• Understanding the aggressive potential of AFX can inform treatment strategies and prognostication.