Ganti S R, Silver A J, Hilal S K, Mawad M E, Sane P
J Comput Assist Tomogr. 1982 Oct;6(5):912-9. doi: 10.1097/00004728-198210000-00008.
Ten patients with proven cerebellar hemangioblastomas were studied by computed tomography (CT). Angiography was obtained in seven cases. Eight patients had a cyst and a nodule, one presented with a nodule only, and one with a cyst only. Some morphological features on CT were found particularly helpful in establishing the histological diagnosis of this tumor. All cysts in this series had either a nonenhancing wall or a thin, discontinuous enhancement rim. The remarkable thinness of the cyst is a helpful feature in differentiating between hemangioblastomas and ring enhancement due to metastases. All hemangioblastoma nodules are near the pia, particularly the tentorial surface or the occipital surface of the cerebellum. The nodules in this series were isodense with brain before and enhanced significantly after contrast medium injection, matching or exceeding the density of the straight sinus. In three cases, a large vessel leading to the nodule could be identified on CT. In only one of 10 cases was there a central lucency in the enhancing nodule. The CT density of the hemangioblastoma cyst correlated with the size of the nodule, i.e., the larger the nodule, the denser the cyst on precontrast studies. Compared to cerebellar astrocytomas, hemangioblastomas are not calcified and tend to have relatively small nodule associated with a large cyst. For a given size cyst, the nodule in an astrocytoma is usually larger.
对10例经证实的小脑成血管细胞瘤患者进行了计算机断层扫描（CT）研究。7例患者进行了血管造影。8例患者有囊肿和结节，1例仅有结节，1例仅有囊肿。发现CT上的一些形态学特征对确立该肿瘤的组织学诊断特别有帮助。本系列中所有囊肿的壁均无强化或有薄的、不连续的强化边缘。囊肿显著变薄是鉴别成血管细胞瘤与转移瘤引起的环形强化的一个有用特征。所有成血管细胞瘤结节均靠近软脑膜，特别是小脑幕表面或小脑枕面。本系列中的结节在注射造影剂前与脑实质等密度，注射后显著强化，密度与直窦相当或超过直窦。3例患者在CT上可识别出通向结节的大血管。10例患者中只有1例强化结节内有中央透亮区。成血管细胞瘤囊肿的CT密度与结节大小相关，即结节越大，平扫时囊肿密度越高。与小脑星形细胞瘤相比，成血管细胞瘤无钙化，且往往有相对较小的结节伴有大囊肿。对于给定大小的囊肿，星形细胞瘤中的结节通常更大。
