“…Kauffman (1924) recorded 2 cases and Kearns (1934), in a discussion on heterotopic bone, mentioned an additional case. Bridges (1959) concluded that heterotopic ossification may occur in almost any part of the connective tissue in the body but no definite aetiological factor is known. Michaud (1908), Pozzi and Bender (191 2 ) , Strong ( 19 14), Lehmacher ( 19 1 6 ) , Asami ( 19202, Reichelt (1928) and Kulka ( 1942) have all reported undoubted instances of heterotopic bone formation in the fallopian tubes, Meyer (1930), Brocq et al (1948), Flamand (1950 and Gerbie et al (1958) in the endometrium.…”