Department of Pathology, Vanderbilt University Medical Center, Nashville, TN.
In a review of 320 surgical specimens diagnosed asÂ desmoidÂ tumor, 94 (29%) were discovered to be misclassified as such. The most common lesions in this series were Gardner fibroma, scar tissue, superficialÂ fibromatosis, nodular fasciitis, myofibroma, and collagenous fibroma. Four sarcomas were also misinterpreted asÂ desmoid-typefibromatosisÂ (3 low-grade fibromyxoid sarcomas and 1 unclassified spindle-cell sarcoma). We take this opportunity to compare and contrastÂ desmoidÂ tumor and several of the soft tissue tumors that should be considered in the differential diagnosis thereof.