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Related Experiment Videos

Pachydermodactyly: six new cases from China.

Shuang Ye1, Shun-Le Chen, Yu-Qi Dong

  • 1Department of Rheumatology, Renji Hospital, Shanghai 2nd Medical University, Clinical Center for Rheumatology & Institute of Rheumatology, #145 Shandong (C) Road, 200001 Shanghai, China.

Journal of Clinical Rheumatology : Practical Reports on Rheumatic & Musculoskeletal Diseases
|December 17, 2005
PubMed
Summary

Pachydermodactyly, a rare condition causing joint swelling, is often misdiagnosed. This review highlights key features to help differentiate it from inflammatory arthritis.

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Area of Science:

  • Dermatology
  • Rheumatology
  • Pathology

Background:

  • Pachydermodactyly is a rare condition characterized by painless swelling of soft tissues around interphalangeal joints.
  • Histopathology reveals increased dermal collagen deposition, predominantly affecting young males, with fewer than 50 reported cases globally.

Observation:

  • This study reviews six new cases of pachydermodactyly.
  • Patients presented with chronic, non-inflammatory, bulbous swelling of proximal interphalangeal (PIP) joints, typically affecting multiple joints symmetrically.

Findings:

  • The average age of onset was 14 years, with a male predominance (5 out of 6 patients).
  • Radiographs showed soft tissue swelling without bony or articular damage.
  • Histopathology confirmed increased dermal collagen deposition.

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Implications:

  • Pachydermodactyly is underrecognized by rheumatologists.
  • It is crucial to differentiate pachydermodactyly from inflammatory arthropathies affecting PIP joints to ensure accurate diagnosis and management.