“…Using the criteria of absence of perineal and anal openings, we reviewed the literature and found 49 cases that met our criteria for the URSM sequence (Table II) [Major, 1929;Meyer, 1941;Kirshbaum, 1950;Currarino, 1970;Rabinowitz et al, 1971;Fitch and Artinian, 1973;Baden et al, 1974;Sofatzis, et al, 1983;Robinson and Tross, 1984;Wenstrup and Pagon, 1985;Gardner and Nelson, 1986;Lande and Hamilton, 1986;Escobar et al, 1987;Lage et al, 1987;Gilbert et al, 1990;Lin, 1991;Currarino and Weinberg, 1991;Fryd- , 1993;Pauli, 1994;Parida et al, 1995]. A common anomaly in most of the cases reviewed in the literature was ambiguous genitalia.…”