本病患病年龄,最小14岁(美国 Tancer亦报告一例14岁病人),最大53岁,葛俨尹报告一例65岁,但妊娠在体内已存留41年,当其患病时只有24岁。1956年王跃云综合579例,50.5％在31～40岁之间。1957年田雪萍综合2,822例,58.4％在30～39岁之间,因此国内一直沿用这个数据,但是笔者统计的结果,却多见于26～35岁之间(见表)。 The age at onset of the disease, the youngest 14 years (the United States Tancer also reported a 14-year-old patient), a maximum of 53 years old, Ge Yan reported a case 65 years old, but the pregnancy has been in the body for 41 years, when only 24 years old. In 1956 Wang Yueyun integrated 579 cases, 50.5% in 31 to 40 years old. In 1957 Tian Xueping 2,822 cases, 58.4% between 30 to 39 years old, so this data has been used in China, but the author’s statistics, but more common in 26 to 35 years old (see table).