Table 3.

Somatostatin receptor expression according to histology

	SSTR1		SSTR2A		SSTR3		SSTR4		SSTR5
	N	Mean (95%CI)	N	Mean (95%CI)	N	Mean (95%CI)	N	Mean (95%CI)	N	Mean (95%CI)
WHO I
Angiomatous	16	7.5 (6.3–8.8)	16	7.9 (6.8–9.0)	16	2.0 (0.9–3.0)	16	3.6 (2.8–4.4)	16	6.9 (6.0–7.8)
Fibroblastic	52	6.2 (5.5–6.9)	54	4.1 (3.4–4.7)	52	1.5 (1.0–2.1)	53	2.7 (2.3–3.1)	54	4.1 (3.6–4.6)
Lymphocyte rich	1	8.0	1	4.0	1	1.0	1	2.5	1	4.0
Meningothelial	334	6.8 (6.5–7.1)	334	5.9 (5.6–6.1)	336	2.3 (2.1–2.5)	339	3.0 (2.8–3.1)	340	5.1 (4.9–5.2)
Metaplastic	10	6.2 (4.6–7.8)	10	4.9 (3.4–6.3)	10	2.1 (0.7–3.4)	10	2.5 (1.5–3.5)	10	5.2 (4.1–6.3)
Microcystic	10	6.1 (4.5–6.7)	10	7.9 (6.4–9.3)	10	1.4 (0.0–2.7)	9	2.6 (1.5–3.6)	10	6.0 (4.8–71)
Psammomatous	17	8.8 (7.6–10.0)	17	4.6 (3.5–5.8)	17	1.6 (0.6–2.6)	17	3.4 (2.6–4.1)	17	5.3 (4.4–6.1)
Secretory	35	9.8 (8.9–10.6)	35	9.6 (8.8–10.3)	35	3.7 (3.0–4.4)	35	2.7 (2.1–3.2)	35	4.3 (3.7–4.9)
Transitional	91	5.8 (5.3–6.3)	90	4.6 (4.1–5.0)	92	2.1 (1.7–2.5)	92	2.4 (2.1–2.8)	91	4.4 (4.0–4.7)
NOS	24	5.8 (4.8–6.8)	25	5.9 (5.0–6.8)	25	1.3 (0.4–2.1)	25	2.5 (1.8–3.1)	25	5.5 (4.8–6.2)
WHO II
Atypical	84	5.1 (4.6–5.7)	86	6.4 (5.9–6.9)	86	2.4 (1.9–2.8)	85	2.4 (2.1–2.8)	86	4.6 (4.2–5.0)
Chordoid	10	7.2 (5.6–8.8)	10	8.3 (6.8–9.7)	10	2.0 (0.6–3.3)	10	2.1 (1.1–3.1)	9	5.2 (4.0–6.3)
Clear cell	0	-	0	-	0	-	0	-	0	-
WHO III
Anaplastic	17	4.7 (3.5–5.9)	17	6.0 (4.9–7.1)	17	1.8 (0.8–2.8)	17	2.0 (1.2–2.8)	17	3.6 (2.7–4.4)
Papillary	0	-	0	-	0	-	0	-	0	-
Rhabdoid	6	4.6 (2.5–6.6)	6	4.0 (4.1–5.0)	6	2.7 (1.0–4.4)	6	1.9 (0.6–3.2)	6	2.5 (1.1–3.9)
Missing	19		15		13		11		9
p Value (ANOVA)		< 0.0001*		< 0.0001*		0.0011*		0.0085*		< 0.0001*

Abbreviations: SSTR somatostatin receptor, NOS not otherwise specified, CI confidence interval, WHO World Health Organization, ANOVA analysis of variance; asterisk (*) presents statistically significant results