Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Tumours
Abstract number: 25894
PROXIMAL PHALANGEAL EXOSTOSIS OF THE LITTLE FINGER
Ahsan AKHTAR, Peter RALTE, Naveen VASIREDDY, Rashpal BASSI
Macclesfield District General Hospital, Macclesfield (UNITED KINGDOM)
The authors present the case of a thirty seven year old woman who attended with a
three day history of a painless swelling over the dorso-radial aspect of her right little
finger, overlying the distal end of the proximal phalanx. There was no history of
trauma or injury. All finger and joint movements were preserved. The patient was
otherwise fit and well. On examination, a firm, fixed and non-tender 9x7 mm swelling
was discovered on the dorso-radial aspect of her right little finger, overlying the distal
proximal phalanx. Plain radiographs and ultrasound revealed a 6x5x3 mm thick bony
outgrowth of the distal dorso-lateral shaft of the proximal phalanx, with stretching of
the overlying extensor tendon/ligament complex. This was surgically removed.
Histology revealed woven and lamellar bone covered by a fibrous cap consistent with
a benign exostosis.An exostosis is a rare benign bone tumour arising on the surface
of a bone. There are many reports in the literature regarding subungual exostoses of
the thumb, fingers and toes. However a solitary exostosis on the proximal phalanx of
a finger is indeed a rare occurrence; there have been fewer than five such cases
reported in English literature. A solitary exostosis on the proximal phalanx in the little
finger has not been reported previously. We believe this to be the first of its kind.
652