Fine structural evidence for hormone secretion by a human thymic tumour

AUTOR(ES)

Macadam, R. F.

RESUMO

An epidermoid type of thymoma from an asymptomatic 39-year-old male subject is described. Electron microscopy demonstrated endocrine type secretory granules within the tumour cells, and a minority of these granules resembled normal human pancreatic alpha cell granules. Fine structural evidence for endocrine secretory activity in a primary thymic tumour has not been previously described.

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