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What is Rosettes are characteristically seen in and explain in detail?
Ref Robbins 7/e p1442; neuropathology for the neuroradiologist : rosette and pseudorosettes by F.J.wipopld and A.perry Rosettes consist of a Halo or spoke wheel arrangements of cells surrounding a central core or hub Rosettes may be considered primary or secondary manifestation of tumor architecture . Primary rosettes form as a characteristics growth pattern of a given tumor type, ahereas secondary rosettes result from the influence of external factors on tumors growth