Prolonged Postoperative Pyrexia and Transient Nonnephrogenic Vasopressin-Analogue-Resistant Polyuria following Endoscopic Transsphenoidal Resection of an Infundibular Epidermoid Cyst

Figure 1

Precontrast T1-weighted axial image showing a suprasellar tumor compressing the optic pathway (a). Gadolinium-enhanced axial image showing an enhanced rim of the tumor (b). The contents of the tumor are of low signal intensity on the T1-weighted image (a) and Gadolinium-enhanced image (b), slightly high on T2-weighted image (c), iso on fluid-attenuated inversion recovery image (d), and relatively high on diffusion-weighted image (e) and T2∗-weighted image (f). Contrast-enhanced computed tomography showing a cystic lesion (g) from the sella turcia to the suprasellar space (h). Calcified components are not found in it. Postcontrast magnetic resonance imaging shows the enhanced cystic wall displacing the optic chiasm upward (i). This cystic lesion occupies the suprasellar region but not the third ventricle (h), (j). Goldmann perimeter reveals irregular bitemporal hemianopsia (k). Constriction of the visual field is more predominant in the right eye than in the left eye (k).

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