Pituitary Neuroendocrine Tumor Diagnosis

MRI is commonly used in the evaluation of pituitary neuroendocrine tumors (PAs). However, it has difficulty to locate the lesions sometimes, especially microadenomas and/or postoperative recurrent tumors. On the MRI they can present various enhancement patterns and other imaging features. About 18% of macroadenomas contain cystic components, and about 20% show foci of hemorrhage, which are usually clinically asymptomatic and diagnosed incidentally in MR imaging.

Positron emission tomography/CT may be useful to detect tumors in patients with equivocal MRI results.

11C methionine positron emission tomography PET/CT can provide valuable diagnostic information when F-FDG PET/CT yields negative results, especially in patients with recurrent microadenomas 1).

Feng Z, He D, Mao Z, Wang Z, Zhu Y, Zhang X, Wang H. Utility of 11C-Methionine and 18F-FDG PET/CT in Patients With Functioning pituitary neuroendocrine tumors. Clin Nucl Med. 2016 Mar;41(3):e130-4. doi: 10.1097/RLU.0000000000001085. PubMed PMID: 26646998.
  • pituitary_neuroendocrine_tumor_diagnosis.txt
  • Last modified: 2023/04/14 01:04
  • by administrador