Dongmei Liu1, Xiaoning Gu2, Fang Liu2, Fuwen Shi2, Min Yang3, Qingqing Wu4. 1. Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China. 2. Department of Ultrasound, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China. 3. Department of Ultrasound, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China. Electronic address: yangminivf60@163.com. 4. Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China. Electronic address: wuqq2007@163.com.
Abstract
OBJECTIVE: To demonstrate the feasibility of utilizing contrast-enhanced ultrasound (CEUS) in scar pregnancies misdiagnosed by transvaginal ultrasound (TVS). METHODS: CEUS was performed in three patients with clinically suspected abnormal pregnancy, and the diagnosis were inconclusive by TVS. Clinical manifestations and features of TVS and CEUS in these cases were analyzed. RESULTS: Three cases included an intramural pregnancy (IMP) after hysteromyomectomy, and two mass-based cesarean scar pregnancy (CSP), the mass was caused by curettage and spontaneous abortion, respectively. In all these cases, early enhancement with high intensity was observed by CEUS at the site of implantation. Moreover, prominently enhanced signal was detected inside the mass, with or without peritrophoblastic ring. No enhancement was detected in clots or masses after effective treatment. CONCLUSION: CEUS can be used as a supplementary method to diagnose scar pregnancy and evaluate the treatment efficacy, especially in cases with ambiguous results by TVS.
OBJECTIVE: To demonstrate the feasibility of utilizing contrast-enhanced ultrasound (CEUS) in scar pregnancies misdiagnosed by transvaginal ultrasound (TVS). METHODS: CEUS was performed in three patients with clinically suspected abnormal pregnancy, and the diagnosis were inconclusive by TVS. Clinical manifestations and features of TVS and CEUS in these cases were analyzed. RESULTS: Three cases included an intramural pregnancy (IMP) after hysteromyomectomy, and two mass-based cesarean scar pregnancy (CSP), the mass was caused by curettage and spontaneous abortion, respectively. In all these cases, early enhancement with high intensity was observed by CEUS at the site of implantation. Moreover, prominently enhanced signal was detected inside the mass, with or without peritrophoblastic ring. No enhancement was detected in clots or masses after effective treatment. CONCLUSION: CEUS can be used as a supplementary method to diagnose scar pregnancy and evaluate the treatment efficacy, especially in cases with ambiguous results by TVS.