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Journal of Korean Neurosurgical Society 1995;24(2): 181-188.
A Study of Therapeutic Modalities of Pineal Region Tumors.
Gi Han Bae, Jin Hwa Eum, Dong Hee Kim, Dae Jo Kim, Chang Gu Kang, Kwan He Park
1Department of Neurosurgery, Maryknoll Hospital, Pusan, Korea.
2Department of Neurosurgery, Bong Sang Hospital, Pusan, Korea.
3Department of Neurosurgery, Wooridul Hospital, Pusan, Korea.
ABSTRACT
The management of pineal region tumors remains controversial. Advocates of a conservative approach emphasize the excellent results of radiotherapy, particularly with germinoma, while a number of recent reports have demonstrated the safety of direct surgery. We analyzed 8 cases of pineal region tumors which had been treated at our institution over the past 7 years. Tissue diagnosis was obtained in 3 patients before irradiation and 5 patients underwent irradiation without histological diagnosis. Among 5 irradiated patients initially, four patients had been achieved complete remission by radiotherapy thus they were presumptively germinoma, but other one patient had no response, so she had been underwent surgery. Among 3 biopsy proven cases, 2 were teratoma and other one was embryonal carcinoma. Complete gross microsurgical excision of well encapsulated tumor was possible in two teratoma cases. MRI and other neuroradiological studies have ben found to be useful in indicating the biological nature and histological type of pineal tumor. So, consideration of MRI scans together with tumor markers and response to small dose irradiation will generally allow a specific diagnosis with a high degree of probability. In this way, germinomas may be selected for radiotherapy and the tumor less likely to response may be subject to primary surgery to obtain complete tumor extirpation or tissue diagnosis.
Key Words: Pineal region tumor; Germinoma; Teratoma; Tumor marker; Radiotherapy; Surgery
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