Residency Program - Case of the Month

Clinical history:

The patient is a 2-year-old boy with a soft tissue mass in the thenar eminence of the hand. MRI showed an amorphous area of enhancing soft tissue in the thenar eminence and a suggestion of increased soft tissue between the radial metacarpals. Excision was performed and showed a 1.5 x 1.5 cm poorly circumscribed subcutaneous mass. Sections of the specimen revealed glistening gray-white surfaces with focal yellow areas.

Microscopic photographs:

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