The broad aim of this study is to evaluate the efficacy of photochemical tissue bonding
(PTB) for the closure of skin excisions. We will test the hypothesis that full thickness
skin excisions treated with PTB can heal with less scarring than those treated with the
conventional suture closure method.
Hypertrophic scarring is a frequent endpoint after traditional surgical excision of skin
cancers of the chest. These scars create significant long-term morbidity to the patient.
There is a clinical need for an alternative treatment that would reduce factors associated
with hypertrophic and possibly keloid scar formation by providing minimal tension, low
infection risk and an absence of foreign body material. This would result in a normal
appearing and healed scar without associated patient morbidity. Photochemical tissue
bonding may provide this alternate treatment. PTB differs from sutures by continuously
joining the tissue surfaces on a molecular level rather than only at discrete suture points.
In addition, PTB does not incite foreign body reactions nor create tissue injury during
passage of the needle and tying a knot, injuries that may initiate scarring.
- Histopathology confirmed basal cell carcinoma or well-differentiated squamous cell
carcinoma without subcutaneous fat invasion on the chest, arm or abdomen or a
diagnosis of atypical or dysplastic nevi on the chest, arm or abdomen.
- Able to follow involved post-operative care instructions
- Able to comply with study requirements
- Age 20-60 years
History of underlying photosensitivity condition Skin phototypes V-VI Use of
photosensitizing medication History of Accutane use within the past 12 months History of
underlying bleeding disorder or use of anticoagulant (e.g. coumadin) Active smoker Known
pregnancy or lactating mother Allergies or reactions to lidocaine or epinephrine
Underlying immunodeficiency Inability to comply with study requirements Pacemaker or
defibrillator in place