Distinctions between pituicytoma and ordinary pilocytic astrocytoma

Case report

Toshiro KatsutaDepartments of Neurosurgery and Pathology, Clinical Research Institute, National Kyushu Medical Center Hospital, Fukuoka; Department of Neurosurgery, Shin-Kokura Hospital, Kitakyushu; and Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

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Tooru InoueDepartments of Neurosurgery and Pathology, Clinical Research Institute, National Kyushu Medical Center Hospital, Fukuoka; Department of Neurosurgery, Shin-Kokura Hospital, Kitakyushu; and Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

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Hiroyuki NakagakiDepartments of Neurosurgery and Pathology, Clinical Research Institute, National Kyushu Medical Center Hospital, Fukuoka; Department of Neurosurgery, Shin-Kokura Hospital, Kitakyushu; and Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

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Morishige TakeshitaDepartments of Neurosurgery and Pathology, Clinical Research Institute, National Kyushu Medical Center Hospital, Fukuoka; Department of Neurosurgery, Shin-Kokura Hospital, Kitakyushu; and Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

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Ken MorimotoDepartments of Neurosurgery and Pathology, Clinical Research Institute, National Kyushu Medical Center Hospital, Fukuoka; Department of Neurosurgery, Shin-Kokura Hospital, Kitakyushu; and Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

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Toru IwakiDepartments of Neurosurgery and Pathology, Clinical Research Institute, National Kyushu Medical Center Hospital, Fukuoka; Department of Neurosurgery, Shin-Kokura Hospital, Kitakyushu; and Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

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✓ The authors present a rare case of pituicytoma. A dynamic magnetic resonance study performed after Gd injection revealed a markedly, homogeneously enhanced, early-phase pituitary lesion in a 32-year-old woman with a 1-year history of amenorrhea. The tumor bled easily during transsphenoidal resection. The lesion consisted of plump spindle cells and lacked Rosenthal fibers and granular bodies, and thus was different from ordinary pilocytic astrocytoma or any other form of this tumor. Although pituicytoma is often confused with pilocytic astrocytoma when it appears in the sellar region, these two kinds of gliomas should be distinguished on the basis of histological differences.

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  • 1.

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