Try it
Radiology · Gynaecological imaging: polycystic ovaries
Sample itemA woman with oligomenorrhoea and hirsutism has a transvaginal ultrasound. Which finding is a recognised criterion for polycystic ovarian morphology?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. An ovary with 20 or more follicles of 2 to 9 mm or a volume over 10 ml
In the Rotterdam-based approach, polycystic ovarian morphology is defined by a high antral follicle count or increased ovarian volume, with follicles arranged peripherally like a string of pearls. Imaging is one of three Rotterdam criteria with hyperandrogenism and anovulation. The original Rotterdam threshold was 12 or more follicles, and current international guidance uses 20 or more per ovary with modern high-frequency probes.
Option by option
A. An ovary with 20 or more follicles of 2 to 9 mm or a volume over 10 ml (correct)
Correct. A follicle count of 20 or more or a volume over 10 ml fits PCOM.
B. A bilateral ovarian mass with ascites
A bilateral mass with ascites suggests malignancy.
C. A single 6 cm complex cyst with solid nodules
A complex cyst with nodules suggests a neoplasm.
D. Ovarian atrophy with no follicles
Atrophic ovaries with no follicles suggest postmenopausal state or ovarian failure.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More Radiology questions
- NeuroimagingWhat is the first investigation of choice in suspected acute subarachnoid haemorrhage?
- Cardiac imagingA 'boot-shaped' heart (coeur en sabot) on a chest radiograph is typical of:
- Musculoskeletal imagingA 'bamboo spine' on a plain radiograph is characteristic of:
- Paediatric radiologyThe 'double bubble' sign on an abdominal radiograph of a newborn suggests: