The IOTA (International Ovarian Tumour Analysis) group's Simple Rules for adnexal mass characterisation include 'malignancy features' (M-features). Which of the following is a MALIGNANCY feature (M-feature) in IOTA Simple Rules?
- A Unilocular cyst
- B Presence of ascites ✓
- C Smooth multilocular cyst with largest diameter < 100 mm
- D Acoustic shadowing
Correct answer: B. Presence of ascites
Explanation
IOTA Simple Rules malignancy (M) features include: M1=irregular solid tumor; M2=presence of ascites; M3=at least 4 papillary structures; M4=irregular multilocular-solid tumor (diameter ≥ 100 mm); M5=very strong Doppler blood flow. Benign (B) features include: B1=unilocular; B2=solid components < 7 mm; B3=acoustic shadowing; B4=smooth multilocular cyst < 100 mm; B5=no detectable flow. Ascites is an M-feature (M2).
Reference: Shaw's Textbook of Gynaecology, 17th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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