Cryosurgery 6o4m3y

CRYOSURGERY

INTRODUCTION • Def=use of extreme cold in surgery to destroy abnormal or diseased tissue. • Meaning = cryo - surgery • || || • " icy cold " " hand work "

USES • • • • • • •

(1)benign & malignant skin condition Warts ,moles, skin tags ,samll skin cancers (2) some internal disorders Liver cancer Prostate cancer Lung cancer Oral cancer

(3)soft tissue condition Fibroma Planter fascitis ( jogger's heel )

• (4) cancer treatment • Is also used to treat internal and external tumors • As well as tumors in bone. • Internal tumor -hollow instrument used - cryo probe - with tumor • Argon carbon dioxide ed through cryoprobe

METHOD •(1) liquid nitrogen •-196 °c •Cold liquid sprayed on diseased tissue •Dabbed with cotton. •(2) carbon dioxide •Same as following liquid nitrogen. (add aceton)

• (3) argon • Recent advantage in technology • Principle - joule thomson effect • Cryo needle 17 guage

ADVANTAGE • Minimal invasive • Minimal pain • Minimal scaring • Minimal cost

DISADVANTAGE • Erythema • Blister formation • Hemorrhage • Infection • Pyogenic granuloma

HEALING TIME • Face = 5-10 days • Hand=3 weeks • Leg= 2-3 month • Temperature • tissue destruction -10- -20°c • Malignant cell kill-40- -50°c