68-Gallium DOTANOC PET/CT pitfall in adnexal tumor

#4031

Introduction: PET/CT with 68Ga-DOTA is a commonly used tool in the baseline evaluation and follow-up of NETs due to its high specificity and sensitivity, showing better performance than CT in detecting primary and metastatic disease. However, we must know more about its normal physiological distribution, its variation in pathologies, and the possibility of confusion with benign processes to optimize its interpretation.

Aim(s): To report an adnexal tumor with high expression of somatostatin receptor (SSTR).

Materials and methods: A 48-year-old woman with a small (6 mm) incidental rectal NET resected with non-oncological polypectomy, underwent Gallium-68–DOTATANOC PET/CT for re-staging showing a right ovarian mass with Krenning 3 expression of SSTR, (SUV max 7.9) and kidney stone. Pelvic ultrasonography shows a predominantly solid, highly vascularized mass; IOTA ADNEX risk: the probability of benign lesion 65.7%, malignancy 34.3%, borderline 4.6%, metastatic 11.8%. O-RADS classification 4.

Conference:

Presenting Author:

Authors: González Devia D, Chaar-Lugo A, Rojas-Camacho J, Londoño-Schimmer E, Buriticá-Cifuentes C,

Keywords: Neuroendocrine tumor, 68Ga-DOTANOC, PET/CT, Rectal neuroendocrine tumor, Adnexal tumor, Pitfalls,