Knuckle pads – a rare finding
Knuckle pads are rare harmless subcutaneous nodules that must be differentiated from joint disease of the proximal interphalangeal or rarely of the metacarpophalangeal joints as well as from other masses of the paraarticular tissues. We present a case of an oth‑ erwise healthy 36-year-old woman p...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Medical Communications Sp. z o.o.
2012-12-01
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| Series: | Journal of Ultrasonography |
| Subjects: | |
| Online Access: | http://jultrason.pl/index.php/issues/volume-12-no-51/knuckle-pads-a-rare-finding?aid=74 |
| Summary: | Knuckle pads are rare harmless subcutaneous nodules that must be differentiated from
joint disease of the proximal interphalangeal or rarely of the metacarpophalangeal joints
as well as from other masses of the paraarticular tissues. We present a case of an oth‑
erwise healthy 36-year-old woman presenting with bilateral knuckle pads located at
the dorsal aspect of the proximal interphalangeal joints. No predisposition to a specific
musculoskeletal disorder was noted. Ultrasound revealed well-delimited subcutaneous
hypoechoic masses without internal flow signals at color Doppler. Histology showed
proliferation of myofibroblasts with a decrease of elastic filaments in the deep dermis.
The clinical picture, the family history in addition to the histology allowed us to make the
diagnosis of knuckle pads. We present the ultrasound findings of knuckle pads and discuss
the differential diagnosis of a “swelling” in the dorsal region of proximal interphalangeal
joints and metacarpophalangeal joints. |
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| ISSN: | 2084-8404 2451-070X |