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(B) CT features of intradermal nevus: high refraction nevus cell mass and nest-like distribution can be seen in the dermis. Dear Editor, Exogenous pigment diseases usually include artificially required skin tattoos, such as tattoos,[[1]] eyebrow tattoos, and post-traumatic foreign body implants caused by various accidents, such as the marks formed when pencil lead accidentally pierces the skin. (C) A large amount of blue-black pigment particles in the middle and upper part of the dermis (HE staining×40). gl I hope this sharing will be beneficial to clinicians, helping them understand the skin CT features of exogenous pigment diseases and differentiate them from other diseases. [Extracted from the article]

Recently, in clinical work, we examined some patients with epidermoid cysts with reflective confocal microscopy (skin computed tomography [CT]). By collecting real-time dynamic skin CT images of these patients, we found that epidermoid cysts have some common characteristics under skin CT. Through the above information, we have preliminarily explored the skin CT image characteristics of epidermoid cyst, provided a new imaging diagnostic basis for the diagnosis of epidermoid cyst, and made the diagnosis more rapid, safe, and convenient, which will be beneficial to clinicians. [Extracted from the article]