Small-blue-round-cell tumor

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Small blue round cells of Ewing Sarcoma
Display of small round blue cells characteristic of desmoplastic small round cell tumour.

In histopathology, a small-, round-, blue-cell tumor (abbreviated SRBCT), also known as a small-blue-round-cell tumour (SBRCT) or a small-round-cell tumour (SRCT), is any one of a group of malignant neoplasms that have a characteristic appearance under the microscope, i.e. consisting of small round cells that stain blue on routine H&E stained sections.

These tumors are seen more often in children than in adults. They typically represent undifferentiated cells. The predominance of blue staining is because the cells consist predominantly of nucleus, thus they have scant cytoplasm.[1][2]


Tumors that belong to this group are:


Endometrial stromal condensation may mimic a small-blue-round-cell tumour.

Endometrial stromal condensation may mimic a small-blue-round-cell tumour.


  1. ^ a b Gregorio A, Corrias MV, Castriconi R, et al. (July 2008). "Small round blue cell tumours: diagnostic and prognostic usefulness of the expression of B7-H3 surface molecule". Histopathology 53 (1): 73–80. doi:10.1111/j.1365-2559.2008.03070.x. PMC 2658025. PMID 18613926. 
  2. ^ aved Khan1, Jun Wei1, Lao Saal1, Ladanyi Marc2, Ringnér Markus3, Carsten Peterson3, Yidong Chen1 & Paul Meltzer1. "Development of a molecular taxonomy of small blue round-cell tumors using cDNA microarrays - Nature Genetics". 
  3. ^ a b c d e Chen QR, Vansant G, Oades K, et al. (February 2007). "Diagnosis of the small round blue cell tumors using multiplex polymerase chain reaction". J Mol Diagn 9 (1): 80–8. doi:10.2353/jmoldx.2007.060111. PMC 1867426. PMID 17251339. 
  4. ^ Gray W, Kocjan G. Diagnostic Cytopathology; . p.307