Abstract
Fibromatosis or desmoid fibromatosis is a rare benign neoplasm and develops commonly
in the abdominal wall, abdominal cavity, or extra-abdominal sites. The mainstay of
treatment is surgery. Chemotherapy and radiotherapy are preferred in cases of inoperable/relapse
or a multifocal disease. Hereby, we report a case of fibromatosis arising in the left
popliteal fossa, proven by histopathology and immunohistochemistry. Local excision
of the mass was performed. The patient was asymptomatic for 6 months, after which
she complained of difficulty in walking. Clinical evaluation elicited recurrence in
the surgical bed. In spite of the surgical excision with tumor-free margins, recurrence
was seen within a span of 6 months. 18F-fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET/CT)
was done to rule out multifocal disease and to define the extent of relapse. Although
magnetic resonance imaging provides an excellent soft-tissue resolution to delineate
the disease,18F-FDG PET/CT is an important and supplementary tool which aids in the management of
fibromatosis.
Keywords
Desmoid tumor - fibromatosis - fluorodeoxyglucose positron emission tomography-computed
tomography in fibromatosis - recurrent fibromatosis
