[Recurrent and metastasizing atypical fibroxanthoma]

Area of Science:

• Dermatology
• Oncology
• Pathology

Background:

• Atypical fibroxanthoma is a rare cutaneous neoplasm typically occurring on sun-damaged skin.
• While generally benign, rare instances of metastasis have been reported, necessitating further classification of aggressive forms.

Observation:

• An 81-year-old patient presented with recurrent atypical fibroxanthoma on the right auricle.
• A solitary metastasis to the right parotid gland was identified during the second recurrence.

Findings:

• Complete surgical excision of the tumor and metastasis was performed.
• The patient opted against adjuvant radiotherapy and has remained disease-free for 60 months post-treatment.

Implications:

• This case underscores the potential for atypical fibroxanthoma metastasis, even in previously treated patients.
• Long-term surveillance is crucial for managing atypical fibroxanthoma, particularly following recurrence or metastasis.