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Radiology
Colon and Appendix
Built from Fundamentals of Diagnostic Radiology
What’s inside
8 sections · 114 slides
Overview
- Colon and appendix overview
Colon Imaging Methods
Barium enema, CT and MR colonography, and staging
- Colon imaging methods today
- When each barium enema is used
- Staging colorectal cancer with CT and MR
- CT colonography technique
- MR colonography
Colon Anatomy
From cecum to anal canal
- Parts of the large intestine
- The course of the colon
- How the colon absorbs and protects
- Cecum and ileocecal valve
- Ascending and transverse colon
- Splenic flexure to sigmoid
- Rectum and anal canal
- Recognizing the normal colon
- Double-contrast barium enema
Colon Polyps and Mass Lesions
Polyps, adenocarcinoma, and other masses
- What a polyp is
- Polyp on CT colonography
- Pedunculated, sessile, and bowler hat
- Pedunculated polyp
- Bowler hat sign
- ~50%
- Growth patterns of colon cancer
- Colon carcinoma on barium enema
- Colon carcinoma on CT colonography
- How colon cancer spreads
- Colon carcinoma on CT
- Complications and second tumors
- Rectal carcinoma with perforation
- Cross-sectional findings of colon cancer
- Colon carcinoma wall thickening
- 0.5%
- Types of colon polyp
- Hyperplastic and adenomatous polyps
- Hamartomatous and inflammatory polyps
- Postinflammatory filiform polyps
- Familial adenomatous polyposis
- Familial adenomatous polyposis syndrome
- Gardner and Turcot syndromes
- Peutz-Jeghers syndrome
- Cowden disease
- Cronkhite-Canada syndrome
- Lymphoid hyperplasia
- Colon lymphoma
- Rectal lymphoma
- GIST of the colon
- Malignant GIST of the rectum
- Lipoma
- Lipoma of the colon
- Extrinsic lesions and endometriosis
- Benign and malignant pelvic masses
- Metastases to colon
Colon Inflammatory Disease
Ulcerative colitis, Crohn disease, and other colitides
- Ulcerative colitis basics
- Ulcerative colitis barium pattern
- Ulcerative colitis: collar button ulcers
- Late polyps in ulcerative colitis
- Ulcerative colitis CT and complications
- Ulcerative colitis involving the entire colon
- Ulcerative colitis in the sigmoid and rectum
- Crohn colitis
- Crohn colitis on CT
- Crohn colitis: perianal fistulas
- Ulcerative colitis versus Crohn colitis
- Ulcerative colitis versus Crohn colitis
- Infectious colitis
- Infectious colitis
- Toxic megacolon
- Toxic megacolon
- Pseudomembranous colitis
- Pseudomembranous colitis
- Amebiasis
- Typhlitis (neutropenic colitis)
- Typhlitis
- Ischemic colitis
- Ischemic colitis on CT
- Ischemic colitis
- AIDS-associated and radiation colitis
- Radiation colitis
- Cathartic and tuberculous colitis
- Epiploic appendagitis
- Epiploic appendagitis
Diverticular Disease
Diverticulosis and acute diverticulitis
- Colon diverticulosis
- Diverticulosis on imaging
- Diverticulosis
- Acute diverticulitis
- Diverticulitis on barium and CT
- Diverticular abscess and colovesical fistula
- Diverticulitis
Lower Gastrointestinal Hemorrhage
Localizing and treating colonic bleeding
- Localizing lower GI hemorrhage
- Causes of lower gastrointestinal hemorrhage
- CT angiography in lower GI bleeding
- Angiodysplasia
Appendix
Imaging methods, anatomy, appendicitis, mucocele, and tumors
- Appendix imaging methods
- Appendix anatomy
- Normal appendix
- Acute appendicitis: presentation
- How appendicitis develops
- Appendicolith and plain radiographs
- Appendicitis on ultrasound
- Acute appendicitis on ultrasound
- Appendicitis on CT
- Acute appendicitis on CT
- Appendiceal abscess
- Appendicitis on MR
- Acute appendicitis on MR
- Mucocele of the appendix
- Appendiceal mucocele
- Appendiceal tumors
- Carcinoma of the appendix
- Key takeaways
- Key takeaways (continued)
- References
- References
- References
- Brant and Helms' Fundamentals of Diagnostic Radiology