Topical cytostatic drugs in the treatment of skin cancer

Treatment of basal cell carcinoma with the pulsed carbon dioxide laser: a retrospective analysis

BACKGROUND AND OBJECTIVE

Treatment options for basal cell carcinoma include surgical excision, cryotherapy, radiation, photodynamic therapy, Moh's micrographic surgery, and topical treatment with 5-fluorouracil and immunomodulators such as imiquimod. Resurfacing and ablation with a CO(2) laser (UltraPulse, Coherent Inc.) may present an attractive and effective treatment option in the management of these cutaneous cancers. We demonstrate the efficacy and safety of the UltraPulse CO(2) in the treatment of basal cell carcinomas of the skin.

METHODS

We performed a retrospective chart review of 23 patients treated with the UltraPulse CO(2) laser. A total of 61 biopsy-proven superficial and nodular basal cell carcinomas without prior treatment were included in the study. The patients were followed postoperatively for a period of 15 to 85 months (mean 41.7 months) and assessed for clinical recurrence.

RESULTS

Of the 61 tumors treated, clinical recurrence was observed in two cases (3.2%). Adverse effects included significant hypertrophic scarring in one patient and hypopigmentation in one patient.

CONCLUSIONS

Destruction of superficial and nodular basal cell carcinomas may be accomplished successfully and safely with the UltraPulse CO(2) laser with a cure rate of 97%.

Immunological effect of cycloheximide in mice

We evaluated the effects of cycloheximide on two immune responses in the mouse. The data obtained in this series of experiments showed enhancement of the direct splenic plaque-forming cell response to sheep red blood cells when the drug was administered at doses of 25 and 50 mg/kg i.p. and of the delayed type hypersensitivity reaction to oxazolone when cycloheximide was injected at doses of 10, 25 and 50 mg/kg i.p. Depression of these responses was observed when the dose of drug injected was 75 or 100 mg/kg i.p. At a dose of 5 mg/kg cycloheximide had no effect on these immune responses.