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Familial cutaneous collagenoma.

Marianne E Dawn1, April C Deng, John Petrali

  • 1Department of Dermatology, University of Maryland School of Medicine, Baltimore, MD 21201, USA. marianne.dawn@gmail.com

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Summary
This summary is machine-generated.

This case study details a 41-year-old woman with multiple asymptomatic skin nodules, diagnosed as collagenomas. The findings highlight abnormal dermal collagen bundles, suggesting a genetic predisposition to these benign skin tumors.

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Area of Science:

  • Dermatology
  • Genetics
  • Pathology

Background:

  • A 41-year-old woman presented with a lifelong history of asymptomatic flesh-colored skin nodules.
  • Family history revealed similar lesions in a maternal uncle and cousin, alongside a history of cardiomyopathy.

Observation:

  • Physical examination showed numerous discrete, spongy plaques and nodules on the back and abdomen.
  • Histopathological examination revealed increased, thickened dermal collagen bundles composed of type I collagen.
  • Elastic fibers were diminished and disorganized, with no significant increase in cellularity or inflammation.

Findings:

  • Biopsy and immunohistochemical studies confirmed the diagnosis of collagenoma, characterized by abnormal dermal collagen.
  • Electron microscopy showed no significant ultrastructural differences in collagen fibers compared to normal tissue.

Implications:

  • This case underscores the importance of recognizing collagenomas, a rare benign skin tumor.
  • The genetic component suggests a potential hereditary pattern, warranting further investigation into associated genetic factors.