Table 1. Data From Individual Studies of Primary Localized Amyloidosis of the Small Intestine.

Case	Sex	Age (years)	Sites	Clinical manifestations	Colonoscopic findings	Studies
1	F	44	Ileum	Acute abdominal pain, diarrhea, and vomiting	Thickening of the wall of the ileum and ascending colon	[28]
2	M	47	Jejunum	Pseudo-intestinal obstruction	Thickening of the mucosal folds and multiple polypoid protrusions	[29]
3	F	81	Jejunum	Melena, and anemia	Diffuse thickening of the mucosa with friability, nodularity, erosions, and polypoid protrusions	[30]
4	M	71	Small intestine	Intestinal obstruction	Diffuse thickening of the wall of the small intestine	[31]
5	F	51	Jejunum and ileum	Chronic diarrhea and malabsorption	Thickening of the jejunal and proximal ileal mucosal folds	[32]
6	M	Middle age	Small intestine	Acute abdomen	Perforation of the wall	[33]
7	M	62	Duodenum and jejunum	Abdominal pain, nausea, and constipation	Multiple shallow ulcers and several erosions	[34]
8	M	62	Small intestine	Small bowel obstruction	Band of amyloid and connective tissue surrounding the small intestine	[35]
9	M	Aged	Small intestine	Abdominal pains and hematemesis	Mucosal ulcerations with discrete nodules	[36]
10	M	60	Small intestine	Nonspecific digestive symptoms	Multiple mucosal polyps	[37]
11	M	74	Jejunum	Nonspecific digestive symptoms	Polypoid, pseudo-tumoral mucosal formations.	[38]
12	F	68	Small intestine	Nonspecific digestive symptoms	Thickening of the wall with rough, and polypoid intestinal mucosal folds	[39]
13	F, M	59	Small intestine (three cases)	Heartburn and constipation	-	[6]
14	M	55	Duodenum	Screening for cancer stomach	A localized depressed lesion	[40]