Case of the Month: March 2026
Clinical history
A 21-year-old nulliparous woman complains of lower abdominal heaviness. She takes an oral contraceptive and is in a monogamous relationship.
On examination, she has a normal-sized, non-tender uterus, and a right adnexal mass is palpated.
Her pregnancy test is negative.
On ultrasound, the mass appears both cystic and solid measuring 9 cm.
Questions:
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List five differential diagnoses of a pelvic mass.
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Describe the histologic findings in the image and identify the labeled structures.
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Given a pathologist’s suspicion of an ovarian neoplasm, what is the primary diagnostic consideration, and what essential exclusions are required for a definitive diagnosis?
How to participate
Take a look at the images.
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Laboratory Medicine and the study of disease for medical students
