Table 3

Density and subtype expression of NPY receptors in pheochromocytomas and paragangliomas

TumorReceptor density (dpm/mg)
Y1Y2
Pheochromocytomas
 Case 155460
 Case 161180
 Case 17650 *2,002 *
 Case 1801,172 *
 Case 190421 *
 Case 200362 *
 Case 210213
Mean density ± SE (NPY receptor-positive cases)438 ± 163834 ± 336
Paragangliomas
 Case 22, base of skull991 *0
 Case 23, carotid body912 *0
 Case 24, mediastinum865 *0
 Case 25, carotid body4740
 Case 26330 *1,933 *
 Case 2709,044
 Case 28, carotid body05,663
 Case 29, carotid body02,450 *
 Case 3001,910 *
 Case 3101,368 *
 Case 32, metastasis0977
 Case 330734 *
 Case 34, carotid body0571 *
 Case 35, carotid body0503
Mean density ± SE (NPY receptor-positive cases)714 ± 1312,747 ± 795
  • * Heterogeneous receptor distribution.