Reason: any plexiform tumor noted to left thumb area History: large fibroma to top of left thumb/wrist area, limited mobility, pain. Exam slightly limited by patient motion artifact on several sequences. Along the radial aspect of the distal first metacarpal, there is a lobulated T2 hyperintense, T1 hypointense, homogeneously enhancing mass measuring 2.8 x 1.6 x 2.3 cm (Obl AP x Obl TR x Obl CC) compatible with a plexiform neurofibroma given this patient's history. Smaller plexiform neurofibroma within the hypothenar subcutaneous fat measures 0.6 x 0.4 x 0.2 cm (Obl AP x Obl TR x Obl CC) and additional scattered small neurofibromas. Positive ulnar variance. T2 hyperintense, T1 hypointense, enhancing foci within the lunate and triquetrum likely due to impaction and inflammation related to positive ulnar variance.The remainder of the bones and soft tissues are within normal limits.
1.Scattered plexiform neurofibromas with the largest along the first metatarsal bone. 2.Positive ulnar variance with findings likely related to impaction involving the lunate and triquetral bones. 