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[Diploic epidermoid cyst: case report].

Hiroki Nakatsuka1, Ichirou Matsubara

  • 1Department of Neurological Surgery, Saiseikai Saijo Hospital, 269-1 Tsuitachi, Saijo-city, Ehime 793-0027, Japan.

No Shinkei Geka. Neurological Surgery
|January 22, 2003
PubMed
Summary

This case report details a rare diploic epidermoid cyst in a 70-year-old woman, highlighting its distinct radiological features and successful surgical removal. The study discusses imaging characteristics for diagnosing these bone cysts.

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Area of Science:

  • Neurosurgery
  • Radiology
  • Pathology

Background:

  • Diploic epidermoid cysts are rare intracranial tumors arising within the diploë of the skull.
  • Accurate diagnosis relies on a combination of imaging modalities.

Observation:

  • A 70-year-old woman presented with a left front-parietal bone lesion.
  • Radiography revealed an osteolytic lesion with a sclerotic border.
  • CT demonstrated a low/iso-density mass with diploic bone destruction.
  • MRI showed characteristic signal intensities on T1, T2, and diffusion-weighted imaging.
  • Gadolinium enhancement was noted in the tumor capsule and adjacent dura mater.

Findings:

  • The tumor was strongly adherent to the dura mater and periosteum.

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  • Surgical extirpation included the tumor, adjacent skull, dura, and periosteum.
  • Postoperative MRI confirmed the absence of enhancement in the surrounding dura.

    • Implications:

    • This case contributes to understanding the radiological spectrum of diploic epidermoid cysts.
    • Detailed imaging analysis is crucial for surgical planning and prognosis.
    • Complete surgical resection is effective for managing these lesions.