Pennes, D R Echogenic adnexal masses associated with first-trimester pregnancy: sonographic appearance and clinical significance. [electronic resource] - Journal of clinical ultrasound : JCU - 391-6 p. digital Publication Type: Journal Article ISSN: 0091-2751 Standard No.: 10.1002/jcu.1870130604 doi Subjects--Topical Terms: Adnexa Uteri--pathologyFemaleGenital Neoplasms, Female--diagnosisHumansPregnancyPregnancy Complications, Neoplastic--diagnosisPregnancy Trimester, FirstRetrospective StudiesUltrasonography