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s / Placenta 36 (2015) A1eA60 A22 34.8% of the single-layer group, 23.3% of double-layer group (p1⁄40.21). By the suture method (interrupted or continuous) of inner layer of myometrium, accreta occurred in 22.7% of the interrupted group, 28.9% of continuous group (p1⁄40.34). Conclusion: The caesarean techniques varied widely in Japan. It should be markedly mentioned that interrupted sutures were introduced at uterine myometrium. P1.30. TWO CASES OF GESTATIONAL TROPHOBLASTIC NEOPLASIA WITH MULTIPLE MOLAR EMBOLI-LIKE LUNG LESIONS AFTER EVACUATION OF HYDATIDIFORM MOLE Yuko Tanizaki, Madoka Yamamoto, Shigetaka Yagi, Naoyuki Iwahashi, Tamaki Yahata, Sakiko Nanjo, Mika Mizoguchi, Aya Kobayashi, Michihisa Shiro, Nami Ota, Yasushi Mabuchi, Sawako Minami, Kazuhiko Ino. Department of Obstetrics and Gynecology, Wakayama Medical University, Wakayama, Japan It is known that hydatidiform molar vesicles can migrate via blood flow to the lung before, at the time of, or after evacuation of hydatidiform mole. These lesions may be detected using lung CT scans, but usually not by plain chest X-ray that is an appropriate investigative tool for counting the number of lung metastasis to evaluate the FIGO risk score. However, clinicopathological significance of these small multiple lesions remains unclear and also it is still controversial whether these lesions are considered as “embolism” or true “metastasis”. We experienced two cases of low risk gestational trophoblastic neoplasia (GTN) with multiple (more than 8) lung lesions after molar pregnancy. Case1: A 28-year-old woman underwent dilution and curettage (DC a: 2-3 times, b: more), by causes of RPL iAnti-phospholipid antibody syndrome (APLs: Positive for antiphospholipid antibodies) , iithrombophilia, iii thyroid hormone abnormalities, iv malformation of uterus, v chromosomal translocation, vi other chromosomal abnormality, vii unknown causes, and by treatments (I:lowdose aspirin; LDA, II:LDA and/or Heparin). Result: 1.No significant differences betweengroupAandBbyage andby times of PRL. 2. Frequency of causes: i 23.1%, ii 19.6%, iii 5.0%, iv 1.7%, v 1.6%, vi 4.4%, vii 44.6%. There were no significant differences except vii, between groups A and B. 3. Rate of successful pregnancy: It was decreased according with age. There was not significantly difference between a and b. (81.3 vs 68.3%; NS) 4. Treatments: IvsII(85.8 vs 79.2%; NS). Group A; (85.3 vs 78.1%; NS), group B; (87.5 vs 81.8%; NS). Patients with 1, I vs II (90.1 vs 74.2%; p1⁄40.03), whereas2, (93.2 vs 80.8%; NS). Under 34 years old: I vs II (94.9% vs 83.7%; p