Radiation Dosimetry Study Comparing 2 Different Patient Setups in Anal/Rectal Cancer Patients

Exclusion Criteria

• •Histological variants other than those listed above in 4.a.
• •Patients with cystocele or abnormal scrotal edema will be excluded. (Although the Genital Drop Technique may specifically benefit this group of patients, however this study is to be performed with average patient anatomy).
• •2002 American Joint Committee on Cancer (AJCC) Staging System. (Anal Cancer: Stage IV.; Distal Rectal Cancer: Stage IV, and tumor 2-node 0-metastasis 0 (T1-T2N0M0) patients).
• •Performance status: Poor (Karnofsky Performance Status of \<60%). (ECOG 3-4).
• •Non-English speaking patients.
• •Prior pelvic radiation.
• •Prior pelvic malignancy.
• •Anal cancer/rectal cancer surgery, except for biopsy at study site.
• •Patient's mental condition and social support is such that he can neither understand the nature of the protocol nor comply with its requirements.