PMC8202382_01
Magnetic resonance imaging of brain showing isointense sellar lesion with enhancement of pituitary stalk
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F1
T1/T2-weighted hyperintense solid enhancing mass lesion approximately 10.5 mm x 16 mm x 14.6 mm with superior extension into suprasellar cistern with enhancement of pituitary stalk [Figure 1].
Magnetic resonance imaging of brain showing uniform enhancement of sellar lesion in contrary to ring enhancement seen in tuberculoma
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F2
The lesion was seen bulging into cavernous sinuses bilaterally just abutting internal carotid arteries with no invasion. There was uniform enhancement of the lesion contrary to ring enhancement seen in tubercular lesions [Figure 2].
Diffuse granulomas composed of epithelioid cells, lymphocytes, and plasma cells replacing the pituitary gland x100 (H and E)
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F3
Histopathological examination revealed tissue fragments composed of numerous epithelioid granulomas, some with central caseous necrosis and occasional Langhans' giant cells [Figures 3 and 4].
Epithelioid granulomas with central caseous necrosis x400 (H and E)
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F4
Histopathological examination revealed tissue fragments composed of numerous epithelioid granulomas, some with central caseous necrosis and occasional Langhans' giant cells [Figures 3 and 4].