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The so-called ectopic pinealomas. A cooperative study of 15 cases
Child'S Brain
|January 1, 1979
Summary
Suprasellar dysgerminomas, also known as ectopic pinealomas, share histological similarities with germ cell tumors. These rare brain tumors present with diabetes insipidus, visual impairment, and endocrine issues, often with subtle radiological findings.
Area of Science:
- Neuro-oncology
- Endocrinology
- Pathology
Background:
- Suprasellar dysgerminomas are rare tumors.
- Their origin and histological classification remain subjects of investigation.
- Extracerebral germinomas, like testicular seminomas, show histological similarities.
Purpose of the Study:
- To present findings from a cooperative study of 15 suprasellar dysgerminoma cases.
- To review literature cases with histological confirmation.
- To confirm the germinal origin of these neoplasms and define their clinical presentation.
Main Methods:
- Cooperative study of 15 suprasellar dysgerminoma cases.
- Literature review of histologically confirmed cases.
- Clinical and radiological assessment.
Main Results:
- Histological similarities observed between suprasellar dysgerminomas and extracerebral germinomas (e.g., testicular seminomas).
- No true pineal histology tumors were found in the sellar region.
- A distinct clinical syndrome was identified: diabetes insipidus, visual impairment, and endocrine disturbances, often with minimal radiological signs.
Conclusions:
- The findings support the germ cell origin of suprasellar dysgerminomas.
- These tumors present a specific clinical syndrome, emphasizing the need for early diagnosis despite subtle radiological findings.