A case of implantation dermatosis that formed a tumor.
A 51-year-old man visited our hospital complaining of a tumor located above his lip. He had been hit on his upper left lip by a chopstick holder 2 months previously. The lesion turned into a tumor and gradually enlarged. The tumor was well circumscribed, smooth and covered with reddish, partially milk-white skin. During surgery to remove the tumor, a piece of a chopstick was found in the subcutaneous tissue, and a diagnosis of implantation dermatosis (ID) was made. On histology, the tumor appeared as an abscess that had increased fibroblasts, small vessels and a large number of neutrophils. In the Japanese published work, we found 86 cases of ID; three were similar to our case and had been clinically diagnosed as adnexal tumors. There were also six cases that showed abscess formation similar to our case on histology. In a survey of the published work from other countries, there were 44 ID cases. There were no common features found among the cases reported in the published work.
Division of Specialized Clinical Science (Dermatology), Tokai University School of Medicine, Kanagawa, Japan. akio-k@is.icc.u-tokai.ac.jp
Akio
A
Kondoh
Emiko
E
Akasaka
Kozo
K
Yamamoto
Kimihiko
K
Mizutani
Kenichi
K
Iwashita
Yoshinori
Y
Umezawa
Yukinori
Y
Ohta
Takashi
T
Matsuyama
Akira
A
Ozawa
D001707:Biopsy, Needle; D005145:Face; D005500:Follow-Up Studies; D005547:Foreign Bodies / Q000150:complications*; D005549:Foreign-Body Reaction / Q000209:etiology* / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment; D012720:Severity of Illness Index; D012867:Skin; D012871:Skin Diseases / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D016896:Treatment Outcome