case_images: PMC11090579_01
case_images: Magnetic resonance imaging brain T1 axial, T2 axial, GRE, contrast axial, contrast sagittal and contrast coronal images showing extra-axial heterogeneously enhancing left parasellar mass with positive dural-tail sign (yellow arrow) and intratumoral bleed. GRE: Gradient Echo.
case_images: SNI-15-129-g001.jpg
case_images: PMC11090579_01_SNI-15-129-g001.jpg
case_images: F1
case_images: Anteriorly, the lesion extends to the left orbital apex, abutting the left optic nerve and compressing the optic chiasm [Figure 1].
case_images: (a) Histomorphology showing sheets of round/polygonal cells with eosinophilic granular cytoplasm and central nuclei. (b) Interrupted reticulin network- reticulin stain. (c) Spherical amyloid globules-H&E stain. (d) Immunohistochemistry-prolactin stain. (e) Low Ki67 labeling index. (f) Congo red stain highlighting apple-green birefringence.
case_images: SNI-15-129-g002.jpg
case_images: PMC11090579_01_SNI-15-129-g002.jpg
case_images: F2
case_images: Strong prolactin (PRL) immunoreactivity with a low Ki67 labeling index, whereas no reaction with other pituitary hormones and cytokeratin renders a diagnosis of prolactinoma [Figures 2 a-f].
case_images: Immediate postoperative magnetic resonance imaging brain showing significant residual lesion.
case_images: SNI-15-129-g003.jpg
case_images: PMC11090579_01_SNI-15-129-g003.jpg
case_images: F3
case_images: Postoperative MRI showed good tumor decompression but a significant residual in the sellar-suprasellar region [Figure 3].
case_images: Contrast magnetic resonance imaging brain showing tiny residual after two years.
case_images: SNI-15-129-g004.jpg
case_images: PMC11090579_01_SNI-15-129-g004.jpg
case_images: F4