深在性脳腫瘍に対する定位脳手術的バイオプシー : "Bio Tac biopsy cannula"の使用経験

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A stereotaxic biopsy was carried out in 6 cases of deep-seated brain tumors, utilizing a "Bio Tac biopsy cannula" (manufactured by the Progress Mankind Technology, Co., U.S.A.). The tumors were located in the basal ganglia (2 cases), lateral ventricle (2 cases), thalamus (1 case) and parietal subcortex (1 case). Sufficient amounts of tumor specimens were obtained in all the cases to establish the histological diagnosis. The histology was germinoma in 2 cases, glioblastoma in 2 cases, astrocytoma (grade 2) in 1 case and metastatic adenocarcinoma in 1 case. Neurological deterioration occurred after biopsy in the case with a metastatic brain tumor in the lateral ventricle that had already shown signs of increased intracranial pressure and disturbance of consciousness. In retrospect, stereotaxic biopsy should not be done in such a case, unless a decompressive procedure is performed at the same time or prior to biopsy. "Bio Tac biopsy cannula" is essentially a modification of the instruments originally designed by Backlund, or Coe, et al. The cannula is introduced into the target location with the inner stylet. After removal of the inner stylet, the inner spiral tip cannula is slowly turned to the depth of the tissue required for sampling. Then, the outer cannula is advanced to capture the spiral tip contain-ing the tissue specimen and finally the entire cannula assembly is removed to retrieve the tissue sam-ple. The advantage of using this instrument is its ability to obtain tissue specimens even from firm solid tumors without difficulty. It is believed that this cannula should be added to the surgical ar-mamentaria of every modern neurosurgical service.
日本脳神経外科学会の論文
1984-12-15

深在性脳腫瘍に対する定位脳手術的バイオプシー : "Bio Tac biopsy cannula"の使用経験

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