Background. Desmoid fibroma is a fibroblastic neoplasm of intermediate biological significance without metastatic potential. but with a tendency to local recurrence and infiltration of surrounding tissues. These tumors are extremely rare (2-4 cases per 1 million people). https://www.roneverhart.com/2-1-2-x-1-4-x-36-Smooth-Saddle-Threshold-NGP-410-36/