system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All are malignant tumors except
assistant
The correct answer is  Ref Robbins 7/p770; Harrison 16/e p633;9/e p1221_1222 Fibromatosis are a group of fibroblastic proliferation through they are locally aggressive, they do not metastasize superficial and deep fibromatosis Plamar ,plantar,penial fibromatosis are superficial type,