case_images: PMC10761225_01
case_images: Contrast-enhanced T1 fat sat axial and sagittal MRI images showed two contrast-enhancing masses: one is nasoethmoidal (a), and the second one is in the nasal choana and postnasal space (b).
case_images: CRIONM2023-5546323.001.jpg
case_images: PMC10761225_01_CRIONM2023-5546323.001.jpg
case_images: fig1
case_images: The first appeared as a small localized contrast-enhancing left ethmoidonasal lesion, and the second one was a larger mixed-density nasochoanal mass extending to the postnasal space and upper nasopharynx (Figure 1).
case_images: Sarcoma with BCOR internal tandem duplication. (a) The tumor is composed of atypical monomorphic cells with little pleomorphism. Hematoxylin and eosin, 200x. (b) The tumor cells are positive for BCOR immunohistochemistry, 200x. (c) The tumor cells are positive for SATB2 immunohistochemistry, 200x. (d) The tumor cells are focally positive for CD-99 immunohistochemistry. CD-99 immunohistochemical stain, 200x.
case_images: CRIONM2023-5546323.002.jpg
case_images: PMC10761225_01_CRIONM2023-5546323.002.jpg
case_images: fig2
case_images: TLE-1 immunostains (Figure 2).
case_images: T1 post contrast fat sat axial (1st three) and sagittal (last one) MRI images showed complete resolution of the previous nasoethmoidal and nasochoanal/postnasal masses posttreatment (1st image is at the level of the ethmoid air cells, and rest of images are including the nasal choana and postnasal space).
case_images: CRIONM2023-5546323.003.jpg
case_images: PMC10761225_01_CRIONM2023-5546323.003.jpg
case_images: fig3
case_images: MRI neck on 20 Sep 2023, (following the 4th cycle) showed dramatic improvement, with resolution of the previously seen left nasoethmoidal and choanal/postnasal masses (Figure 3).