Nakano I, Kondo A, Iwasaki K
Department of Neurosurgery, Kitano Medical Research Institute and Hospital, Osaka, Japan.
Neurosurgery. 1997 Jun;40(6):1279-82. doi: 10.1097/00006123-199706000-00030.
The case of a 42-year-old woman with a choroid plexus papilloma (CPP) arising from the posterior wall of the third ventricle is described. This case is very unusual because the tumor did not have any connection with the choroid plexus but was attached to the normal brain parenchyma.
The patient presented with the symptoms of increasing intracranial pressure. Magnetic resonance imaging revealed hydrocephalus related to a small mass in the posterior third ventricle, occluding the aqueduct.
Surgery confirmed that the tumor was located at the surface of the posterior commissure without having any connection to the normal choroid plexus. A histopathological examination revealed a CPP with no attachment to the choroidal tissue.
A review of the literature demonstrates that CPPs without any connection to the choroid plexus are very unusual. To our knowledge, this is the first reported case of such a CPP that developed on the posterior wall of the third ventricle in which no choroid plexus was present. Furthermore, this tumor, to our knowledge, is also the smallest intraventricular CPP to be verified at surgery.
本文描述了一例42岁女性患者，其第三脑室后壁出现脉络丛乳头状瘤（CPP）。该病例非常罕见，因为肿瘤与脉络丛没有任何连接，而是附着于正常脑实质。
患者出现颅内压升高的症状。磁共振成像显示与第三脑室后部一个小肿块相关的脑积水，阻塞了导水管。
手术证实肿瘤位于后连合表面，与正常脉络丛无任何连接。组织病理学检查显示为脉络丛乳头状瘤，未附着于脉络组织。
文献回顾表明，与脉络丛无任何连接的脉络丛乳头状瘤非常罕见。据我们所知，这是首例报道的发生于第三脑室后壁且不存在脉络丛的此类脉络丛乳头状瘤病例。此外，据我们所知，该肿瘤也是手术中证实的最小的脑室内脉络丛乳头状瘤。
