Table 1.

Age at diagnosis of hereditary and sporadic PHEO/PGLs from nine different studies

	RET		NF1		VHL		SDHB		SDHD		Sporadic
	Age	n	Age	n	Age	n	Age	n	Age	n	Age	n
(Neumann et al., 2002)	36	13	-	-	18	30	26	12	29	11	44	205
(Amar et al., 2005)	30	16	40	13	24	25	34	21	31	11	46	228
(Mannelli et al., 2009)	37	27	42	5	30	48	29	24	40	47	50	340
(Cascon et al., 2009)	39	36	-	-	28	20	30	25	25	11	46	143
(Walther et al., 1999)	-	-	42	148	-	-	-	-	-	-	-	-
(Casanova et al., 1993)	38	100	-	-	-	-	-	-	-	-	-	-
(Pomares et al., 1998)	38	23	-	-	-	-	-	-	-	-	47	23
(Ricketts et al., 2010)	-	-	-	-	-	-	27	153	21	18	-	-
(Eisenhofer, Timmers, et al., 2011)	40	38	42	10	31	66	31	48	31	11	47	182
Grouped mean & total n	37.7	253	41.9	176	27.4	189	28.6	283	32.4	109	47.0	1121