ovarian monodermal and highly specialized teratoma struma ovarii https://www.malacards.org/card/struma_ovarii struma ovarii MEDGEN:20977 DOID:2640 An ovarian mature teratoma characterized by the presence of aberrant thyroid tissue. The aberrant thyroid tissue shows morphologic changes identical to thyroid adenoma or carcinoma. Patients may present with abdominal mass and unusual symptoms due to thyrotoxicosis, or Meigs syndrome (ascites and pleural effusion). NCIT:C7468 MESH:D013330 MONDO:0006980 ICDO:9090/0 icd11.foundation:185581438 GARD:0024509 struma ovarii NOS (morphologic abnormality) struma ovarii (morphologic abnormality) EFO:1001192 UMLS:C0038478