title: Intrauterine hypoechoic mass cephalad to cesarean scar pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Tochigi, Japan.
authors.forename: Hironori
authors.initials: H
authors.lastname: Takahashi
authors.affiliation: Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Tochigi, Japan.
authors.forename: Shigeki
authors.initials: S
authors.lastname: Matsubara
mesh_terms: D000328:Adult; D002585:Cesarean Section / Q000009:adverse effects*; D002921:Cicatrix / Q000000981:diagnostic imaging* / Q000209:etiology; D003937:Diagnosis, Differential; D005260:Female; D006406:Hematoma / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging*; D011271:Pregnancy, Ectopic / Q000000981:diagnostic imaging*; D016216:Ultrasonography, Prenatal