Gastroenterol Res

Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access

Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc

Journal website http://www.gastrores.org

Case Report

Volume 5, Number 2, April 2012, pages 74-78

Osseous Metaplasia in an Inflammatory Polyp of the Rectum: A Case Report and Review of the Literature

Figures

Figure 1. Rectal polyp during colonoscopy.

Figure 2. Microscopic images of H&E stained sections of the inflammatory rectal polyp with focus of osseous metaplasia (arrows); (a) 40 x magnification, (b) 200 x magnification.

Table

**Table 1.** Summary of the Current Case and Previously Reported Cases of Osseous Metaplasia in Colon Polyps Including Corresponding Reference
Polyp Type	Location	Size (mm)	Age (yrs)	Gender	Year	Reference
Dysplastic
Tubular Adenomas	Sigmoid	15	85	F	2005	(1)
	Transverse	Unknown	63	F	2008	(2)
	Unknown	12	59	M	1997	(3)
Tubulovillous Adenomas	Cecum	20	73	M	1999	(4)
	Sigmoid	25	Unknown	Unknown	2000	(5)
	Rectum	18	67	M	1994	(6, 7)
	Unknown	Unknown	Unknown	Unknown	1996	(8)
Serrated Adenomas	Rectosigmoid	25	50	M	2010	(9)
Benign
Inflammatory Polyps	Rectum	12	39	M	2009	(10)
	Rectum	10	25	M	1981	(11)
	Rectum	10	22	F	1992	(12)
Juvenile Polyps	Rectum	Unknown	10	M	1964	(13)
	Rectum	20	3	F	1994	(6)
	Rectum	10	15	M	2009	(14)
	Unknown	Unknown	Unknown	Unknown	1963	(15)
	Rectosigmoid	10	5	M	1992	(16)
	Rectum	5	4	M	1992	(16)
Current Case Inflammatory Polyp	Rectum	10	74	M	2011