small blue round cell tumour

small blue round cell tumour

A generic term for tumours (almost invariably malignant) characterised by sheets of relatively homogenous small cells with scant cytoplasm and prominent (“blue”) nuclei, which cannot be reliably differentiated by light microscopy and require ancillary studies—in particular, immunohistochemistry—to identify cell lineage and guide therapy.

Head and neck SBRCTs
Lymphoma, melanoma, olfactory neuroblastoma, peripheral neuroendocrine tumour, rhabdomysarcoma, sinonasal undifferentiated carcinoma.
References in periodicals archive ?
On her return, scans revealed a desmosplastic small blue round cell tumour - an aggressive and rare soft cell sarcoma that has a five-year survival rate of just 15%.