Fine structure of Leydig cells from an arrhenoblastoma of the ovary
Review articleOpen access

The electron microscopic morphology of Leydig cells from an arrhenoblastoma was compared with similar normal and neoplastic cells from testis and ovary. Foci of condensed cytoplasm and membranous whorls reported by previous authors were interpreted as stages of focal cytoplasmic degradation. Reinke crystalloids and related filamentous structures were prominent. The fine filaments reported by previous investigators were traceable in the present specimen to desmosomes and therefore were interpreted as being tonofibrils. A large glycogen-containing cell was noted for the first time in this type of neoplasm.

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