Intraluminal colonic tissue growth; most commonly sporadic or part of polyposis syndromes
Generally slow growing with low malignant potential; due to high prevalence in population; ho...
Generally asymptomatic
Painless rectal bleeding, bright or dark red, mixed with stools, dripping, or on wiping
Diarrhea or mucous stool
Abdominal pain
Constipation
Chronic bleeding, result...
Colonic polypectomy; diagnostic, therapeutic:
Snare polypectomy with electrocautery for pedunculated polyps
Endoscopic mucosal resection for sessile polyps
Endoscopic su...
10 years if no polyps or distal small hyperplastic polyps (<10 mm) (5)[B]
3 to 5 years in hyperplastic polyps ≥10 mm (5)[C]
7 to...
Kaltenbach T, Anderson JC, Burke CA, et al. Endoscopic removal of colorectal lesions—recommendations by the US Multi-Society Task Force on Colorectal Cancer. Gastrointest...
K63.5 Polyp of colon
D12.6 Benign neoplasm of colon, unspecified
K51.40 Inflammatory polyps of colon without complications
D12.5 Benign neoplasm of sigmoid colon
D12.2 Benign neoplasm of ascend...
Colonoscopy is the gold standard for diagnosing polyps.
Biopsy small hyperplastic polyps to differentiate adenomatous and serrated polyps.
Use of NSAIDs and calcium is associated with de...
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<bold>FIGURE 69.2</bold> Mucosal polyps of the colon may be sessile, protruding directly from the colonic wall, or pedunculated, extending from the mucosa through a fibrovascular stalk. (<i>A</i>) Large sessile polyp seen at colonoscopy. The polyp has a broad-based attachment to the mucosa. (<i>B</i>) Pedunculated polyp seen at colonoscopy. The polyp is attached to the mucosa through a distinct stalk. (<i>C</i>) Low-power photomicrograph of a pedunc...
<bold>FIGURE 69.2</bold> Mucosal polyps of the colon may be sessile, protruding directly from the colonic wall, or pedunculate...
<bold>FIGURE 69.3</bold> Histology of adenomatous polyps. (<italic>A</bold>) Tubular adenomas are characterized by a complex network of branching adenomatous glands (see also <italic>C</bold>). (<italic>B</bold>) Villous adenomas consist of glands that extend straight down from the surface to the base as fingerlike projections; this pattern may be suggested by the gross appearance of these polyps. (<italic>C</bold>) Tubulovillous adenoma.
<bold>FIGURE 69.3</bold> Histology of adenomatous polyps. (<italic>A</bold>) Tubular adenomas are characterized by...
<bold>FIGURE 69.9</bold> Hyperplastic polyps. (<italic>A</bold>) Several diminutive hyperplastic polyps seen in the rectum during flexible sigmoidoscopy. (<italic>B</bold>) Photomicrograph of a hyperplastic polyp, characterized by elongated glands with papillary infoldings that have a typical serrated epithelial pattern.
<bold>FIGURE 69.9</bold> Hyperplastic polyps. (<italic>A</bold>) Several diminutive hyperplastic polyps seen in th...
<bold>FIGURE 69.13</bold> Familial adenomatous polyposis (FAP). (<italic>A</bold>) Gross specimen of a resected colon from a patient with FAP. (<italic>B</bold>) Sessile and pedunculated adenomatous polyps in the colon of a patient with FAP. (<italic>C</bold>) Close-up view of a profuse type of FAP, in which the mucosa is carpeted with innumerable polyps. (<italic>D</bold>) Photomicrograph demonstrating profuse FAP with both sessile and pedunculated adenomatous polyps.
<bold>FIGURE 69.13</bold> Familial adenomatous polyposis (FAP). (<italic>A</bold>) Gross specimen of a resected co...
<bold><italic>Figure 6-7</bold> Carcinoma in situ.</bold> A colon polyp with an area of malignant (dark hyperchromatic atypical) epithelium that has not invaded the basement membrane.
<bold><italic>Figure 6-7</bold> Carcinoma in situ.</bold> A colon polyp with an area of malignant (dark hyperchro...
Tubular adenoma of the colon. A pedunculated tubular adenoma.
Tubular adenoma of the colon. A low-power photomicrograph of a tubular adenoma of the colon shows closely packed epithelial tubules. The fibrous stalk is vascular and covered by normal colonic epithelium.
Tubular adenoma of the colon. A low-power photomicrograph of a tubular adenoma of the colon shows closely packed epithelial tubules. The fi...