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June 24, 1961

Placenta Previa Accreta

JAMA. 1961;176(12):1035-1036. doi:10.1001/jama.1961.63040250018020

PLACENTA PREVIA ACCRETA may be defined as the morbid adherence of a placenta situated in the lower segment of the uterus. Placenta increta and placenta percreta refer to invasion of the myometrium, or the myometrium and peritoneum, respectively. The invasive process may involve all or part of the placental surface.

The name placenta previa accreta was first given to this condition by Shotton and Taylor,1 who described a case in 1944. Since 1896, 47 cases have been reported in the literature.2,3

Incidence  The reported incidence of placenta previa alone varies from 0.3 per cent to 0.8 per cent. At the University of California Hospital, San Francisco, 41 cases were reported in 13,074 deliveries from 1949 to 1959, giving an incidence of 0.31 per cent. Greenhill4 reported 325 cases in 40,061 deliveries at the Chicago Lying-In Hospital, giving an incidence of 0.79 per cent. Kerr5 reports an

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