Small bowel cancer

Grade (G)

• GX: The tumor grade cannot be identified.
• G1: The cells look more like normal tissue cells (well differentiated).
• G2: The cells are somewhat different (moderately differentiated).
• G3: The cells look very unlike normal cells (poorly differentiated).
• G4: The cells barely resemble normal cells (undifferentiated).

Diagnosis

• Imaging tests
• CT
• MRI
• Positron emission tomography (PET)
• X-rays of the upper digestive system and small bowel after drinking a solution containing barium (upper gastrointestinal series with small bowel follow-through)
• Nuclear medicine scans, which use a small amount of radioactive tracer to enhance imaging tests