PMC3622356_01
MR images obtained 2 weeks (a, b) and 3 weeks (c) after onset, (a) coronal T1-weighted image demonstrated intra-and suprasellar mass with a central area of high signal intensity consistent with hematoma of subacute phase. The hyperintense signal may correspond to hemoglobin degradation content as extracellular methhemoglobin, (b) sagittal postgadolinium T1-weighted image showed rim enhancement of hematoma capsule, (c) coronal T1-weighted image demonstrated enlargement of pituitary hematoma resulting in compression of the chiasm (arrows). No sign of rebleeding was detected. Compared with MR images obtained 2 weeks after onset (a), the compression of chiasm was markedly worsened for this one week (c, arrows)
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F1
Two weeks after the onset, magnetic resonance imaging (MRI) revealed a pituitary mass with hematoma consistent with pituitary apoplexy [Figure 1a and b], and he was referred to our institute. MRI showed the enlargement of the pituitary mass lesion resulting in the compression of the chiasm [Figure 1c]. The intensity of the hematoma within the adenoma was changed from hyperintensity to hypointensity on T1-weighted image [Figure 1c].
Intraoperative microphotograph showing the content of hematoma. Xanthochromic fluid was spouted after dural opening (arrows)
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F2
After dural opening, xanthochromic fluid spouted out, but no fresh clot could be detected within the hematoma cavity [Figure 2].