STRUMA OVARII radiology

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DEFINITION
– Struma ovarii is monodermal teratoma in which thyroid tissue is exclusively present or constitutes > 50% of mature cystic teratoma

IMAGING
– Multilocular cystic mass with avidly enhancing soft tissue component ± dermoid cyst
– Cystic portion shows various signal on MRI
; T2 low signal intensity foci = gelatinous material
– Multilocular cystic tumors containing “struma pearls” on USG
– Uptake in mass on I-123 imaging

Multilocular cystic ovarian mass with multiple, echogenic, rounded intracystic "struma pearls" a characteristic sonographic feature of struma ovarii. These struma pearls tend to be well vascularized. Image from Diagnostic imaging, gynecology
Multilocular cystic ovarian mass with multiple, echogenic, rounded intracystic “struma pearls” a characteristic sonographic feature of struma ovarii. These struma pearls tend to be well vascularized.
Image from Diagnostic imaging, gynecology
Struma ovarii
Struma ovarii
Incidentally found struma ovarii (I-123 uptake) during post thyroidectomy work up for thyroid cancer
C. Ghander et al.
Gynecologic Oncology, Volume 102, Issue 2, 2006, Pages 378-380

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