QUIZ for CT Colonography

Filling defect with geometric borders and sharp angles

Areas of low density
Fecal material

Round filling defect
Fecal material

Round filling defect with an area of low density
Benign polyp previous biopsy

Round, homogenous density
Fecal material

Complete rim around the lesion

Multiple Diverticuli

Multiple Diverticuli

Remnant stool in diverticular sacs

Pedunculated
Polyp

Round, protruding lesion

Low, fatty density

Location in the cecum

Lipomatous ileocecal valve

Recto-sigmoid Tumor
Half Apple-core

Recto-sigmoid Tumor
Stage – T3, N1
Lymph nodes and infiltration of the mesenteric fat

1st Tumor
Rectum
T3, N2

Synchronous Tumor
Hepatic Flexure

Failed Colonoscopy
Non-Hodgkin Lymphoma