Korean J Nucl Med.
2000 Aug;34(4):366-369.
Preoperative Cisternoscintigraphy As a Guide to Therapeutic Decision
Making for Cystic Subdural Hygroma
Abstract
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We report a case of a patient with cystic subdural hygroma who underwent pre-operative
Tc-99m DTPA cistrenoscintigraphy to determine the course of operation. A 68-year-old female
was admitted to the department of neurosurgery because of acute subarachnoid hemorrhage.
After emergency ventricular drainage, the hydrocephalus and cystic subdural hygroma in the
right fronto-temporal area developed. She underwent Tc-99m DTPA cisternoscintigraphy to
evaluate the type of hydrocephalus, which revealed obstructive communicating hydrocephalus
and the communication between the subdural hygroma and the subarachnoid space. As a result
of these findings, she underwent the ventriculo-peritoneal shunt operation without removal
of the subdural hygroma. Post-operative brain CT showed nearly normalized shape and size
of the right ventricle and disappearance of subdural hygroma. We recommend the pre-operative
cisternoscintigraphy in patients with complex hygroma to evaluate the communication between
subdural hygroma and the subarachnoid space.