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Summary - Freckle

The text is the summary of recent articles on Freckle from National Library of Medicine (NLM). This information is subject to NCBI's Disclaimer and Copyright notice.

Malignant melanoma of the conjunctiva (CM) is an uncommon but potentially deadly disorder. Cairn terriers with ocular melanosis (OM) accumulate large, heavily pigmented melanocytes in the anterior uvea. A 66-year-old man presented with a long history of recurrent attacks of urinary retention and lower urinary tract symptoms. Tail fan necrosis (TFN) is the bacterial infection of the tail fan of spiny lobsters which leads to melanosis and erosion of the tail fan tissues. Melanosis coli (MC) is a noninflammatory, benign, and reversible colonic disorder, but its detection rates in China are unclear. Melanosis of the stomach and duodenum is a rare entity and a striking finding diagnosed by upper gastrointestinal endoscopy. Blue nevus is a melanocytic tumor that is commonly found in the skin. Novel mutations in adenosine deaminase acting on RNA 1 gene (ADAR1) are responsible for dyschromatosis symmetrica hereditaria (DSH). To explore the clinical characteristics of neurocutaneous melanosis (NCM) in adult patients in order to help improve diagnosis and treatment of this disease.We present a rare case of an adult patient suffering from neurocutaneous melanosis with malignant melanoma as well as a review Chinese and English literature, and analyze their clinical features.There were thirty adult NCM patients, aged 19 to 65 years old, average 27.9 years old, twenty males (66.7%), ten females (33.3%); Giant congenital melanocytic nevi (GCMN) are a rare occurrence. To determine population-based incidence of conjunctival tumours in Olmsted County, Minnesota.The Rochester Epidemiology Project medical record linkage system was used to identify patients with conjunctival tumours in Olmsted County (1 January 1980 to 31 December 2015). Fibroblast-derived melanogenic paracrine mediators are known to play a role in melanogenesis. Post-inflammatory hyperpigmentation (PIH) after solar lentigo removal using a Q-switched (QS) 532-nm Nd:YAG laser is a cause for concern. Intussusception is a rare cause of intestinal obstruction in adults and represents a diagnostic challenge for the surgeon. Facial hypermelanosis is a significant cause of cosmetic disfigurement, social embarrassment and psychological morbidity affecting quality of life.To study clinicoepidemlogic patterns of facial hypermelanoses among men.Medical records of all adult males presenting with facial hypermelanoses were analyzed for this retrospective cross sectional study for demographic details, duration, cosmetic usage, sun exposure, drug intake, infections, systemic or cutaneous diseases, and family history of hypermelanotic dermatosis.

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