Open AccessDual tracer pet imaging (68ga-dotatate and 18f-fdg) features in pulmonary carcinoid: Correlation with tumor proliferation index
Author(s) -
Dhiraj Bhatkar,
Ketaki Utpat,
Sandip Basu,
Jyotsna M Joshi
Publication year - 2017
Publication title -
indian journal of nuclear medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.261
H-Index - 13
eISSN - 0972-3919
pISSN - 0974-0244
DOI - 10.4103/0972-3919.198476
Subject(s) - medicine , neuroendocrine tumors , proliferation index , pathology , ki 67 , lung , carcinoid tumors , biopsy , positron emission tomography , radiology , nuclear medicine , immunohistochemistry
Pulmonary carcinoid tumors are rare group of lung neoplasms representing 1% of all the lung tumors. The typical bronchial carcinoids showed higher and more selective uptake of 68 Ga-DOTATATE than of 18 F-FDG on PET-CT. The Ki-67(MIB-1), a tumor proliferation index is a prognostic marker in neuroendocrine tumors for estimating tumor progression. Atypical carcinoids have higher Ki-67 index and have an increased propensity to metastasize as compared to typical ones. 68 Ga-DOTATATE PET imaging along with Ki-67 can be correlated for better management of patients with neuroendocrine tumors. We describe the dual tracer imaging features in a patient of pulmonary carcinoid with avid 68 Ga-DOTATATE and minimal 18 FDG ( 18 Flurodeoxyglucose) uptake diagnosed on the basis of imaging and bronchoscopic biopsy and its correlation with tumor proliferation index.