Wiktionary
fibromatosis
n. (context pathology English) The presence of multiple fibromas
Wikipedia
Fibromatosis
The term fibromatosis refers to a group of benign soft tissue tumors which have certain characteristics in common, including absence of cytologic and clinical malignant features, a histology consistent with proliferation of well-differentiated fibroblasts, an infiltrative growth pattern, and aggressive clinical behavior with frequent local recurrence.