Table 4.
Treatment evaluation—follow-up techniques
| rSCC | rADC | aSCC | |
|---|---|---|---|
| Anoscopy | − | − | + |
| Rectoscopy | + | + | − |
| MRI | + | + | + |
| (FDG-PET)/CTa | + | + | + |
| Endoscopic-US | + | + | + |
aSCC, anal squamous cell carcinoma; CT, computed tomography; FDG, fluorodeoxyglucose; MRI, magnetic resonance imaging; PET, position emission tomography; rADC, adenocarcinoma of the rectum; rSCC, rectal squamous cell carcinoma; US, ultrasound.
a
FDG-PET/CT can be considered for treatment evaluation and research of post-CRT resistant disease, but not for long-term follow-up.