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  • cells
  • Tumor cells were strongly positive for vimentin and CD99 (Figure 2(b) ) but were negative for AE1/AE3, leukocyte common antigen LCA, chromogranin, and CD56. (hindawi.com)
  • CD99 membranous staining of tumor cells ×40 (b). (hindawi.com)
  • Tomography
  • Computed tomography confirmed an adrenal tumour with invasion of the left diaphragm and kidney. (hkmj.org)
  • Contrast computed tomography (CT) demonstrated a 12-cm left adrenal mass with infiltration to the left crus of diaphragm and upper pole of the left kidney ( Fig ). On closer examination, the left renal artery was encased by the tumour but there was no evidence of distant metastases. (hkmj.org)
  • neuronal
  • Tumor cells may express neuronal markers and be positive for synaptophysin, neuron-specific enolase (NSE), and neurofilament. (ispn.guide)
  • cystic
  • CT imaging showed a large intra-axial cystic tumour with solid component in the right frontal lobe with diffuse perilesional vasogenic edema. (clinmedjournals.org)
  • CD99
  • Tumor cells were strongly positive for vimentin and CD99 (Figure 2(b) ) but were negative for AE1/AE3, leukocyte common antigen LCA, chromogranin, and CD56. (hindawi.com)
  • CD99 membranous staining of tumor cells ×40 (b). (hindawi.com)
  • Diffuse
  • Histological examination revealed a highly cellular neoplasm composed of diffuse sheets of tumor cells having monomorphic, round to oval, finely vesicular nuclei. (biomedcentral.com)
  • Microscopic sections showed a highly cellular neoplasm composed of diffuse sheets of tumor cells having monomorphic, round to oval, finely vesicular nuclei, occasional nucleoli, and scanty cytoplasm. (biomedcentral.com)
  • nuclei
  • The tumor cells were discohesive, showed scant basophilic cytoplasm, and ovoid rather than polygonal nuclei, fine granular chromatin texture, and marked nucleoli. (biomedcentral.com)
  • There may be Homer-Wright rosettes, which are neuroblastic rosettes formed as a result of tumor cell nuclei arranged in a circular fashion about tangled cytoplasmic processes. (ispn.guide)
  • childhood
  • The incidence of these tumors in early childhood is rare, accounting for less than 10 cases per million each year ( 3 ), and the incidence in newborns is exceedingly rare. (tums.pub)
  • rare
  • We discuss the importance of recognizing this rare condition and how this entity differs from the commonly occurring tumors. (aku.edu)
  • however, these tumors are extremely rare in individuals of African or Asian origin ( 2 ). (tums.pub)
  • primary
  • Besides these organs, the pancreas can also develop this type of tumors [ 3 ]-which accounts for 0.3% of the primary pancreatic neoplasms [ 4 , 5 ]. (hindawi.com)
  • pathology
  • It is important to have knowledge of this pathology and to be able to differentiate it from other commonly occurring CPA tumors, such as vestibular and trigeminal schwannomas. (aku.edu)