๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Squamous cell carcinoma
Squamous cell carcinoma
Data on cryotherapy for squamous cell carcinomas is similar to that found for the treatment of basal cell carcinomas in many respects. Pooled analysis of observational studies using cryotherapy reported only one recurrence (0.8%) out of 273 patients treated in 8 studies.27 Mean follow-up ranged from 2 to 5 years. A retrospective series of 563 squamous cell carcinomas treated over a 23-year period described a 97% cure rate, though the definition of โcureโ was unclear and no follow-up time was reported.28 Of all the modalities included in the pooled analysis of observation studies for interventions for nonmetastatic cutaneous squamous cell carcinoma, cryotherapy along with electrodessication and curettage had the highest cure rates for squamous cell carcinomas, but most tumors were small and deemed to be low risk.27 As with the studies on basal cell carcinoma, itโs not clear that the techniques employed for the studiesโincluding debulking and prolonged freezing timesโare the same techniques employed by contemporary dermatologists.