Histopathology of the Endometrium

The endometrium differs from all other tissues of the body in that it rhythmically changes its structure and function. For many years the meaning of these changes remained puzzling and obscure. At about the turn of the century some investi­ gators held the physiological fluctuations of the menstrual cycle to be inflamma­ tory changes. Later, when stricter criteria for the pathology of the endometrium were applied, morphologists misinterpreted pathological fluctuations in the cycle either as phys