Glow-and-Kill surgery: new light therapy targets hidden cancer cells

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age ≥ 18 years of age * Patients with locally advanced or recurrent colorectal cancer undergoing surgery * Amenable to diagnostic CT and MR imaging * Have an Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 3 * Participants of child-bearing potential must agree to use adequate contraceptive methods (e.g., hormonal or barrier method of birth control; abstinence) prior to study entry. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately * Participant must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure Exclusion Criteria: * Pregnant or nursing female participants * Any condition which in the Investigator's opinion deems the participant an unsuitable candidate to receive the fluorescence-guided surgery with intraoperative PDT * Patients with porphyria, or with known hypersensitivity to porphyrins or porphyrin-like compounds * Patients who are not cleared to undergo surgery * Patients with any acute hepatitis or chronic liver dysfunction with baseline elevated liver function tests (i.e. Aspartate transaminase (AST)/alanine transaminase (ALT) ≥ 2.5 x upper limit of normal \[ULN\]) will be excluded from the study * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements * Patients unwilling or unable to follow protocol requirements * Any condition which in the investigator's opinion deems the participant an unsuitable candidate to receive study drug and/or procedure