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Related Experiment Videos

Giant pilomatricoma.

Gian Piero Lozzi1, H Peter Soyer, Julia Fruehauf

  • 1Department of Dermatology, University of L'Aquila, L'Aquila, Italy.

The American Journal of Dermatopathology
|May 24, 2007
PubMed
Summary
This summary is machine-generated.

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This case report details an unusual, rapidly growing pilomatricoma in a 52-year-old man. The large clavicular nodule

Area of Science:

  • Dermatopathology
  • Surgical Pathology

Background:

  • Pilomatricoma, a benign skin tumor originating from hair follicle matrix cells, typically presents as a small, asymptomatic subcutaneous nodule.
  • Unusual presentations can mimic malignant neoplasms, complicating clinical diagnosis and necessitating thorough histopathologic evaluation.

Observation:

  • A 52-year-old male presented with a large (5.5 cm high, 11 x 6 cm base), ulcerated, rapidly growing reddish nodule on the left clavicle.
  • The lesion, present for 7 years, caused occasional burning and pain, raising clinical suspicion for cutaneous lymphoma, sarcoma, squamous cell carcinoma, or metastasis.
  • Histopathology revealed a dermal and subcutaneous tumor with matrical cells, cornified material, shadow cells, multinucleated giant cells, calcification, ossification, edema, and hemorrhage.

Findings:

  • Histopathologic features confirmed the diagnosis of pilomatricoma, despite its atypical clinical presentation.

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  • The presence of extensive calcification, ossification, and multinucleated giant cells contributed to the tumor's unusual appearance.

    • Implications:

    • This case underscores the importance of considering pilomatricoma in the differential diagnosis of large, rapidly growing cutaneous nodules, even with features suggestive of malignancy.
    • Awareness of pilomatricoma's diverse clinical spectrum is crucial for accurate diagnosis and appropriate patient management, avoiding unnecessary aggressive treatments.
    • Further research into the factors influencing pilomatricoma's atypical growth and presentation may improve diagnostic strategies for rare cutaneous neoplasms.