The Dermojet has recently become popular as a new tool in dermatology. The injection of local anesthetic agents or of steroid prepaarations into the skin by pressure is a convenience for the physician and protects the patient from the psychological and physical trauma of a needle.
CARPENTER CL, JOLLY HW, REED RJ. Dermojet Histopathological Artifacts. Arch Dermatol. 1965;92(3):304. doi:10.1001/archderm.1965.01600150094017
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