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Related Experiment Videos

Dermal spindle cell lipoma: plexiform and nodular variants

B W Zelger1, B G Zelger, A Plörer

  • 1Department of Dermatology, University of Innsbruck, Austria.

Histopathology
|December 1, 1995
PubMed
Summary

This study describes dermal spindle cell lipoma, a rare skin tumor. These tumors are composed of fat cells and spindle cells, presenting in distinct patterns and locations based on patient demographics.

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Area of Science:

  • Dermatopathology
  • Surgical Pathology
  • Oncology

Background:

  • Dermal spindle cell lipoma is a distinct variant of lipoma.
  • It is characterized by a unique histological composition and clinical presentation.

Purpose of the Study:

  • To characterize the histological, clinical, and immunohistochemical features of dermal spindle cell lipoma.
  • To differentiate between the plexiform and nodular patterns of this tumor.

Main Methods:

  • Histopathological examination of eleven dermal spindle cell lipoma cases.
  • Immunohistochemical staining for vimentin and S-100 protein.
  • Ultrastructural analysis of tumor cells.

Main Results:

  • Two distinct patterns observed: plexiform (n=6) and nodular (n=5).

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  • Plexiform type: thigh-groin-buttock area, middle-aged females. Nodular type: head-neck/acral, young adults.
  • Tumor cells positive for vimentin; adipocytes showed S-100 positivity. Ultrastructure confirmed lipoblastic differentiation.

    • Conclusions:

    • Dermal spindle cell lipoma exhibits distinct clinical and histological patterns.
    • It represents the dermal equivalent of subcutaneous spindle cell lipoma.
    • No recurrence observed in follow-up cases, suggesting a benign nature.