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Related Experiment Videos

Spindle cell lipoma showing biphasic pattern--a case report.

Koshi Hattori1, Masahito Hatori, Masami Hosaka

  • 1Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan. mhato@mail.tains.tohoku.ac.jp

Upsala Journal of Medical Sciences
|August 4, 2005
PubMed
Summary
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This case report details a rare spindle cell lipoma (SCL) in a 75-year-old man, presenting an unusual biphasic pattern on MRI and histology. The benign tumor, located in the posterior neck, showed no recurrence after surgical removal.

Area of Science:

  • Pathology
  • Radiology
  • Oncology

Background:

  • Spindle cell lipoma (SCL) is a rare, benign mesenchymal tumor typically affecting middle-aged men.
  • SCL commonly presents in the posterior neck region.
  • This report focuses on an atypical SCL presentation.

Observation:

  • A 75-year-old male presented with a 7 x 5 cm subcutaneous posterior neck mass.
  • MRI revealed a biphasic pattern: high T1/T2 signal outer layer (fat-suppressible) and a central low signal area with gadolinium enhancement.
  • Macroscopic and microscopic examination confirmed two distinct tissue components: mature adipose tissue and a fibrous portion with spindle cells.

Findings:

  • Histological analysis confirmed the diagnosis of spindle cell lipoma, ruling out malignancy.

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  • The biphasic radiological appearance correlated with distinct histological features.
  • The tumor demonstrated characteristic SCL morphology with mature fat and spindle cell components.

    • Implications:

    • This case highlights the importance of considering SCL in the differential diagnosis of posterior neck masses with unusual imaging features.
    • Understanding the biphasic pattern on MRI can aid in accurate preoperative diagnosis.
    • Complete excision of SCL ensures favorable prognosis with no recurrence, as observed in this case.