glycogen rosette

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glycogen rosette2016-11-13T15:19:19+00:00

glycogen rosette

glycogen rosette image from New Medical Terms

Electron micrograph of glycogen rosette

PATHOLOGY

Definition A garland-like cluster of granular specks of glycogen seen by electron microscopy in the cytoplasm of the liver in various neoplasms, especially in Ewing sarcoma

Differential diagnosis Glycogen rosettes have been seen in seminoma, rhabdomyosarcoma, yolk sac tumour, clear cell adenocarcinoma of the breast, endometrium, ovary, vagina, salivary gland and kidney, clear cell sarcoma, sugar tumour of lung, and occasionally in hepatic adenoma and hepatocellular carcinoma 

Synonym Alpha units   

Reference Essentials of Anatomic Pathology, L Chang, D Bostwick, Springer, 2006  

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