• Lixia Yu, Linying Xu, and Xiaoyan Xu.
• Department of Gynecology, Weihai Women and Children Health Hospital, Weihai, Shandong, China.
• Medicine (Baltimore). 2017 Dec 1; 96 (48): e8874e8874.

RationaleCornual ectopic pregnancy in adenomyosis patients is a rare clinical condition, which may require careful approach for accurate diagnosis and treatment.Patient ConcernsA 38-year-old woman presented with amenorrhea for 8 weeks and serum HCG levels of 1455 mmol/L. The B ultrasound showed an endometrial thickness of 1.7 cm, and the presence of a cystic structure (16 6 mm) at the right uterine horn. Color Doppler flow imaging (CDFI) accurately detected and confirmed the position of the cystic structure with its clear boundaries.DiagnosesCornual ectopic pregnancy in adenomyosis.InterventionsThe diagnosis was confirmed and treated by HIFU ablation. Total ablation was performed for 738 seconds without any bleeding.OutcomesSerum HCG levels decreased to < 0.1 mmol/L after 60 days post operation, and follow-up for 11 months showed a regular menstrual cycle without dysmenorrhea. Gestational sac was not obvious at postoperative 90 days by MRI. The adenomyosis associated lesion with blood perfusion became smaller at postoperative 90 days.LessonsIn this case, we successfully performed HIFU ablation and treated the cornual ectopic pregnancy in an adenomyosis patient for the first time, without any adverse complications.

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