case_images: PMC6920587_01
case_images: Endoscopic view of right nasal cavity showing mass extending down from
  sphenoethmoidal recess to the nasal floor.
case_images: 10.1177_2152656719896580-fig1.jpg
case_images: PMC6920587_01_10.1177_2152656719896580-fig1.jpg
case_images: fig1-2152656719896580
case_images: Nasal endoscopy revealed a right lobulated sinonasal mass with pale mucosa and prominent blood vessels (Figure 1).
case_images: Magnetic resonance imaging of brain showed a large lobulated enhancing soft
  tissue mass at the sellar region extending anteriorly to the sphenoid and
  ethmoidal sinus, laterally to the cavernous sinus and the right carotid
  artery (A and B) and the extension of mass into the nasal cavity (C).
case_images: 10.1177_2152656719896580-fig2.jpg
case_images: PMC6920587_01_10.1177_2152656719896580-fig2.jpg
case_images: fig2-2152656719896580
case_images: Magnetic resonance imaging (MRI) showed similar findings (Figure 2).
case_images: The tumor cells mainly arranged in sheets, consisting of monomorphic
  medium-sized cells with oval to round hyperchromatic nuclei (seen under
  H&E x100 magnification). Similar group cells with higher magnification
  (H&E, x400 magnification) showing hyperchromatic nuclei with moderate
  bubbly cytoplasm and some cells appear plasmacytoid.
case_images: 10.1177_2152656719896580-fig3.jpg
case_images: PMC6920587_01_10.1177_2152656719896580-fig3.jpg
case_images: fig3-2152656719896580
case_images: Further immunohistochemical analysis for pituitary hormones confirmed a corticotroph adenoma (Figure 3).