Prevalence and clinicopathological characteristics of appendiceal carcinoids in Sharjah (United Arab Emirates)

Table 1 Clinicopathological characteristics of patients with appendiceal carcinoids from Emirates of Sharjah

Patientnumber1	Age (yr)	Gender	Tumor size (mm)	Extension2	Tumor localization
1	25	M	8	Serosal layer	28 mm from proximal end
2	29	M	4	Mesoappendix	Tip
3	33	M	4	Muscular layer	Tip
4	19	M	2	Muscular layer	2 mm from tip
5	28	M	1	Muscular layer	Tip
6	54	M	1	Muscular layer	6 mm from tip
7	25	F	4	Muscular layer	13 mm from tip
8	18	F	3	Muscular layer	Tip
9	27	F	3	Muscular layer	10 mm from tip

¹All cases underwent open appendectomy for clinical diagnosis of appendicitis which was further confirmed on microscopic examination;

²No vascular invasion was identified in any case. M: Male; F: Female.

Table 2 Immunohistochemical characterization of appendiceal carcinoid tumors in patients from Emirates of Sharjah

Patient number	Age (yr)	Sex	CG	Synaptophysin	NSE	5-HT	CEA	CK20	CK7
1	25	M	+	+	+	-	-	-	-
2	29	M	+	+	+	+	-	-	-
3	33	M	+	+	+	-	-	-	-
4	19	M	+	+	+	-	-	+	-
5	28	M	N/D	N/D	N/D	N/D	N/D	N/D	N/D
6	54	M	+	+	+	+	+	-	-
7	25	F	+	+	+	+	-	-	-
8	18	F	+	+	+	-	-	-	-
9	27	F	+	+	+	+	-	-	-

CG: Chromogranin; NSE: Non-specific enolase; 5-HT: Serotonin; CEA: Carcinoembryonic antigen; CK-20: Cytokeratin 20; CK-7: Cytokeratin 7; N/D: Not determined as the tissue sample was unavailable for the staining procedure; M: Male; F: Female.