Naylor M F, Scheithauer B W, Forbes G S, Tomlinson F H, Young W F
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905, USA.
J Comput Assist Tomogr. 1995 Nov-Dec;19(6):853-9.
We report the radiologic findings in 23 cases of Rathke cleft cyst (RCC) and correlate them with the histopathology.
We reviewed the radiology and pathology of 23 cases of surgically treated RCC operated upon at our institution or referred in consultation.
There appears to be a correlation between the MR and CT appearance of the cyst, the gross appearance of the cyst contents, and the histopathologic characteristics of the cyst lining. Some of the lesions demonstrated peripheral enhancement, which in two cases was clearly due to a peripherally displaced rim of pituitary tissue.
The appearance of RCC with CT and MRI is variable, and radiologic diagnosis can be difficult. Imaging features such as a sellar epicenter, smooth contour, absence of calcification, absence of internal enhancement, and homogeneous attenuation or signal intensity within the lesion suggest the diagnosis of RCC. Rim enhancement does not correlate with the presence of squamous metaplasia, hemosiderin, or cholesterol within the cyst wall and is not consistently seen in cases with changes of mild, chronic inflammation. In some cases, rim enhancement is due to a peripherally displaced rim of pituitary tissue.
我们报告23例拉克氏囊肿（RCC）的影像学表现，并将其与组织病理学结果相关联。
我们回顾了在我们机构接受手术治疗或会诊的23例RCC的放射学和病理学资料。
囊肿的磁共振成像（MR）和计算机断层扫描（CT）表现、囊肿内容物的大体外观与囊肿内衬的组织病理学特征之间似乎存在相关性。部分病变显示周边强化，其中两例明显是由于垂体组织的周边移位边缘所致。
RCC的CT和MRI表现各异，放射学诊断可能存在困难。鞍区中心、轮廓光滑、无钙化、无内部强化以及病变内均匀衰减或信号强度等影像学特征提示RCC的诊断。边缘强化与囊肿壁内鳞状化生、含铁血黄素或胆固醇的存在无关，且在轻度慢性炎症改变的病例中并非始终可见。在某些情况下，边缘强化是由于垂体组织的周边移位边缘所致。
