Cystic lesions of the pineal region : MRI and pathology

Pineal lesions are rare. Tumours in this location comprise 0.4-1% of intracranial tumours. They grow mainly as solid-mass lesions, and cystic tumours are not common. On MRI, a cystic configuration is associated usually with non-neoplastic pineal lesions rather than with a tumour, but analysis does n...

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Bibliographic Details
Published in:Neuroradiology 2000-06, Vol.42 (6), p.399-402
Main Authors: ENGEL, U, GOTTSCHALK, S, NIEHAUS, L, LEHMANN, R, MAY, C, VOGEL, S, JÄNISCH, W
Format: Article
Language:English
Subjects:
Adolescent
Adult
Arachnoid Cysts - diagnosis
Arachnoid Cysts - pathology
Astrocytoma - diagnosis
Astrocytoma - pathology
Biological and medical sciences
Brain Diseases - diagnosis
Brain Diseases - pathology
Brain Neoplasms - diagnosis
Brain Neoplasms - pathology
Child
Child, Preschool
Cysts - diagnosis
Cysts - pathology
Diagnosis, Differential
Endocrinopathies
Female
Humans
Hypothalamus. Hypophysis. Epiphysis (diseases)
Magnetic Resonance Imaging
Male
Malignant tumors
Medical sciences
Pineal Gland - pathology
Pinealoma - diagnosis
Pinealoma - pathology
Sensitivity and Specificity
Teratoma - diagnosis
Teratoma - pathology
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Summary:Pineal lesions are rare. Tumours in this location comprise 0.4-1% of intracranial tumours. They grow mainly as solid-mass lesions, and cystic tumours are not common. On MRI, a cystic configuration is associated usually with non-neoplastic pineal lesions rather than with a tumour, but analysis does not allow cystic pineal tumours to be distinguished from glial cysts with certainty. We compared neuroradiological and pathological data from 13 cystic pineal lesions, analysing preoperative MRI. Formalin-fixed, paraffin-embedded surgical specimens were stained routinely and immunocytochemically, using the streptavidin-biotin-complex method. Histology revealed six pineocytomas, four glial cysts, an arachnoid cyst, a low-grade astrocytoma and a teratoma. Signal characteristics of pineocytomas were similar in many respects to those of glial pineal cysts. Histomorphological analysis allowed unambiguous discrimination between pineocytomas and glial pineal cysts.
ISSN:0028-3940
1432-1920
DOI:10.1007/s002340000308