[Scintigraphy with erythrocytes labelled in vitro with 99mTc compared with 111In-octreotide in the detection of carotid glomus].

OBJECTIVE

Demonstrate the utility of centelleography using 111In-octreotide in carotid glomus simple o multiple in comparison to erythrocytes with 99mTc calculate the sensitivity, specificity and accuracy of both test.

DESIGN

Comparative survey (Diagnostic test) Place: Hospital Oncológico de Concentración del Distrito Federal (Mexico).

SUBJECTS: Twenty patients sent to nuclear medicine service for carotid glomus diagnosis.

MAIN MEASURES: All of the patients went under a centelleography with 111In-octreotide labeled erythrocytes. Diagnostic was confirmed with US and CAT, taking as the gold standard the selective angiography and/or histopathology.

RESULTS

Using 99mTc-labeled erythrocytes resulted in; True positives 13, true negatives 3, false positive 3, false negative 1. Sensitivity 92%, specificity 50%, accuracy 80% and Using 111In-octreotide: True positive 14, true negative 6, and 100% sensitivity, specificity was obtained.

CONCLUSIONS

We consider that Centelleography with 111In-octreotide must be the selected image methodology to accurately diagnose carotid glomus, previous to surgery, or in case of patients prior to radiotherapy that because of age, damage size or location can not be candidates for surgery.