Reason: Bx-proven atypical dermatofibroma of R 3rd finger w/persistent pain out of proportion to exam, concerning for bony involvement History: Pain as above. A marker was placed at the tip of the third finger presumably representing site of patient's pain. There is a small focus of intermediate signal intensity on T1-weighted images within the subcutaneous fat of the fifth finger tip situated volar and distal to the tuft of the distal phalanx, measuring approximately 5 mm in diameter, extending from the skin to the volar surface of the tuft of the distal phalanx, but does not appear to involve the bone. There is minimal increased signal intensity within this lesion on fat-suppressed T2-weighted images and minimal, if any, contrast enhancement on post gadolinium T1 weighted images. Small focus of signal void along the periphery of the lesion may represent site of biopsy.The remainder of the soft tissues of the middle finger are normal.Bone marrow signal intensity is normal.The joints appear normal.
Small focus of signal abnormality within the finger tip presumably represents site of biopsy of patient's dermatofibroma, but we cannot determine to what degree this reflects postbiopsy changes or the lesion itself. We see no signal abnormality in the underlying bone to suggest osseous involvement.