case_images: PMC9168333_01
case_images: Preoperative MRI. Postcontrast T1 (a) sagittal, (b) axial, and (c) coronal magnetic resonance imaging demonstrating a mass (white arrow) involving the sellar and parasellar region.
case_images: SNI-13-220-g001.jpg
case_images: PMC9168333_01_SNI-13-220-g001.jpg
case_images: F1
case_images: The mass was hypointense on T1 and isointense on T2 with homogenous enhancement on postcontrast T1 [Figure 1].
case_images: Preoperative CT. (a) Coronal and (b) sagittal computed tomography imaging demonstrating a hyperdense sellar mass.
case_images: SNI-13-220-g002.jpg
case_images: PMC9168333_01_SNI-13-220-g002.jpg
case_images: F2
case_images: CT scan [Figure 2]. CT scans of the chest, abdomen, and pelvis were unremarkable.
case_images: Myeloid sarcoma: the tumor shows sheets of intermediate sized blasts with scant cytoplasm, irregular nuclear contours, finely dispersed chromatin, and prominent nucleoli (a). Mitotic figures are numerous (b). The neoplastic cells strongly express CD117 (c) and myeloperoxidase (d).
case_images: SNI-13-220-g003.jpg
case_images: PMC9168333_01_SNI-13-220-g003.jpg
case_images: F3
case_images: Pathologic review of the tissue showed sheets of blast cells with immunophenotype consistent with MS [Figure 3].
case_images: Postoperative MRI (a) T1 sagittal, (b) T1 axial postcontrast, and (c) T1 coronal magnetic resonance imaging demonstrating debulking of the sellar and suprasellar portion of the mass (white arrow).
case_images: SNI-13-220-g004.jpg
case_images: PMC9168333_01_SNI-13-220-g004.jpg
case_images: F4
case_images: Follow-up imaging nearly a month after surgery and chemotherapy showed near-total disappearance of the mass and resolution of the portions encasing the optics nerves and cavernous sinus contents [Figure 4].