Xanthogranuloma of the Sellar Region

Abstract

Magnetic resonance imaging (MRI) showed an intrasellar lesion with homogeneous hyperintense on T1-weighted images and T2-weighted images and inhomogeneous contrast enhancement by the gadolinium administration [Figure 1]a and [Figure 1]b. Rathke's cleft cyst was initially diagnosed preoperatively, and the tumor was totally resected by transsphenoidal surgery. Histopathology revealed that granulomatous tissue consisted of cholesterol clefts, lymphoplasmacellular infiltrates, marked hemosiderin deposits, and multinucleated foreign body giant cells around cholesterol clefts [Figure 1]e-[Figure 1]g. Immunohistochemical staining showed...