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  1. No Access

    Article

    Optical coherence tomography detects early optic nerve damage before visual field defect in patients with pituitary tumors

    Optical coherence tomography (OCT) is a useful tool for predicting visual recovery after the removal of pituitary tumors. However, the utility of OCT in patients with pituitary tumors and a normal visual field...

    Yasuo Sasagawa, Mitsutaka Nakahara, Daisuke Takemoto… in Neurosurgical Review (2023)

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    Article

    Oculomotor nerve palsy in pituitary apoplexy associated with pituitary adenoma: a radiological analysis with fast imaging employing with steady-state acquisition

    Oculomotor nerve palsy (ONP) occasionally occurs in cases of pituitary apoplexy (PA) associated with pituitary adenoma, but its mechanism remains unclear. Intracranial nerves are clearly visualized by fast-ima...

    Yasuo Sasagawa, Hiroyuki Aburano, Kazumasa Ooiso, Masahiro Oishi… in Acta Neurochirurgica (2021)

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    Article

    The clinicopathological analysis of receptor tyrosine kinases in meningiomas: the expression of VEGFR-2 in meningioma was associated with a higher WHO grade and shorter progression-free survival

    WHO grade II/III meningiomas recur frequently and there is currently no established molecular target therapy for meningioma. No previous studies have revealed the association between receptor tyrosine kinases ...

    Satoko Nakada, Yasuo Sasagawa, Osamu Tachibana, Hideaki Iizuka… in Brain Tumor Pathology (2019)

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    Article

    Radiation-induced gliomas: a report of four cases and analysis of molecular biomarkers

    Radiation-induced glioma (RIG) is a rare secondary glioma. The tumors morphologically resemble their sporadically arising counterparts. Recently, the WHO classification of tumors of the central nervous system ...

    Tsunehito Nakao, Yasuo Sasagawa, Sumihito Nobusawa… in Brain Tumor Pathology (2017)

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    Article

    Pediatric symptomatic Rathke cleft cyst compared with cystic craniopharyngioma

    Symptomatic Rathke cleft cysts (RCCs) are rarely detected in neuroradiological screening and are less commonly found in children than in adults. However, when RCCs are observed in children, it is important to ...

    Yasuhiko Hayashi, Daisuke Kita, Issei Fukui, Yasuo Sasagawa… in Child's Nervous System (2016)

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    Article

    NAB2–STAT6 fusion gene analysis in two cases of meningeal solitary fibrous tumor/hemangiopericytoma with late distant metastases

    We present two cases of meningeal solitary fibrous tumor (SFT)/hemangiopericytoma (HPC) with immunohistochemistry of STAT6 and analysis of NAB2–STAT6 fusion genes. Case 1 was a 37-year-old male with a left mid...

    Satoko Nakada, Hiroshi Minato, Tsutomu Takegami, Nozomu Kurose… in Brain Tumor Pathology (2015)

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    Article

    Narrow band imaging-guided endoscopic biopsy for intraventricular and paraventricular brain tumors: clinical experience with 14 cases

    Narrow-band imaging (NBI) has been confirmed as a useful endoscopic technique to distinguish neoplasm from normal tissue, on the basis of the enhanced neovascularity of tumor tissue. NBI-guided tissue biopsy f...

    Yasuo Sasagawa, Takuya Akai, Satoko Nakada, Hiroshi Minato… in Acta Neurochirurgica (2014)