September 2018 — Anatomic Pathology 1

A 30-year-old G2P2 woman (i.e., she has had two pregnancies and two deliveries after 24 weeks) experienced an episode of amenorrhea. While her home pregnancy test was negative, serum hCG was persistently elevated (range 90-110 mlU/ml). Ultrasonographic evaluation of her uterus showed an echogenic mass in the corpus measuring approximately 1 cm. She underwent a hysterectomy. What is the diagnosis?

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Prasuna Muppa, M.B.B.S.
Resident, Anatomic and Clinical Pathology
Mayo Clinic
Kabeer Shah, D.O.
Resident, Dermatopathology
Mayo Clinic
Kenneth Schoolmeester, M.D.
Consultant, Anatomic Pathology
Mayo Clinic
Assistant Professor of Laboratory Medicine and Pathology
Mayo Clinic College of Medicine

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