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Erschienen in:
09.11.2016 | Neuroradiologie | Clinical Case
Freiburg Neuropathology Case Conference
A Pituitary Mass Lesion
Erschienen in: Clinical Neuroradiology | Ausgabe 4/2016
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A 41-year-old woman presented with a history of amenorrhea for 13 years, which was treated with a dopamine antagonist. Magnetic resonance imaging (MRI) performed 3 years earlier revealed a pituitary mass (not shown). Although the initial MRI already showed a compression of the optic chiasm, no neurosurgical consultation was arranged, presumably because the visual examination was normal. The current MRI (Figs. 1 and 2) showed an enlargement of the intrasellar mass. Her visual examination showed a slight decrease of visual acuity and a new bitemporal hemianopia. An endocrinological examination showed a slightly increased serum prolactin level, whereas levels of all other pituitary hormones were within reference ranges.
Fig. 1
Axial (a) as well as sagittal (b) T2-weighted images. Images show an isointense pituitary mass lesion extending into the suprasellar region (arrow)
Fig. 2
Axial (a), coronal (b) and sagittal (c) T1-weighted images after administration of gadolinium (Gd). The intrasellar as well as the suprasellar portion of the mass lesion show some degree of homogeneous capsular enhancement (arrow). The parenchyma of the lesion is enhanced to a lesser extent. The optic chiasm is clearly compressed by the suprasellar portion of the tumor (b, arrow head)
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