click for answer

?????? It shows well defined, soft tissue lesion adjacent to ulnar styloid process.

?????? There is no calcification or adjacent bony destruction.

Ultrasonography [ high frequency ? B mode/Color Doppler mode]:

?????? It shows well capsulated, mixed echogenic area lateral and anterior aspect of ulnar styloid process.

??????? There is no evidence of communication with radiocarpal [ synovial ] joint or with any vascular structure seen.

??????? Area shows ? no significant Doppler activity with in the lumen of lesion ? or its wall.

?

Conclusion:

Dermoid cyst [ ectodermal inclusion cyst]

Biopsy and resection confirmed the diagnosis.