SNOMED CT, US Edition

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/SNOMEDCT/1260180004
http://purl.bioontology.org/ontology/SNOMEDCT/1260180004
Preferred Name

Growing teratoma syndrome

Definitions
A rare neoplastic disorder characterized by benign metastatic masses increasing in size and number after chemotherapy for non-seminomatous germ cell tumors of testis or ovary. It may present at any time after chemotherapy, with a median occurrence within 24 months after treatment completion. Per definition, the resected specimen exclusively contains mature teratoma components, and serum tumor markers have normalized. The retroperitoneum is the most common site, although almost any other localization has been reported. Increased tumor size may cause mechanical compression of vital organs, with renal dysfunction, bowel ischemia and biliary obstruction as major complications. A rare neoplastic disorder characterised by benign metastatic masses increasing in size and number after chemotherapy for non-seminomatous germ cell tumours of testis or ovary. It may present at any time after chemotherapy, with a median occurrence within 24 months after treatment completion. Per definition, the resected specimen exclusively contains mature teratoma components, and serum tumour markers have normalised. The retroperitoneum is the most common site, although almost any other localisation has been reported. Increased tumour size may cause mechanical compression of vital organs, with renal dysfunction, bowel ischaemia, and biliary obstruction as major complications. A rare neoplastic disorder characterised by benign metastatic masses increasing in size and number after chemotherapy for non-seminomatous germ cell tumours of testis or ovary. It may present at any time after chemotherapy, with a median occurrence within 24 months after treatment completion. Per definition, the resected specimen exclusively contains mature teratoma components, and serum tumour markers have normalised. The retroperitoneum is the most common site, although almost any other localisation has been reported. Increased tumour size may cause mechanical compression of vital organs, with renal dysfunction, bowel ischaemia and biliary obstruction as major complications. A rare neoplastic disorder characterized by benign metastatic masses increasing in size and number after chemotherapy for non-seminomatous germ cell tumors of testis or ovary. It may present at any time after chemotherapy, with a median occurrence within 24 months after treatment completion. Per definition, the resected specimen exclusively contains mature teratoma components, and serum tumor markers have normalized. The retroperitoneum is the most common site, although almost any other localization has been reported. Increased tumor size may cause mechanical compression of vital organs, with renal dysfunction, bowel ischemia, and biliary obstruction as major complications.
Synonyms
Growing teratoma syndrome (disorder)
Type http://www.w3.org/2002/07/owl#Class
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