Multiline treatment of primary cutaneous adenoid cystic carcinoma with multiple metastases: a case report and literature review

This case highlights an unusually aggressive clinical course of PCACC with rapid progression to widespread metastatic disease shortly after definitive local treatment. Given the rarity of metastatic PCACC, this report contributes valuable insight into its natural history, diagnostic approach, and therapeutic challenges. It underscores the need for heightened clinical awareness and further research into effective systemic treatment strategies for advanced PCACC.