title: Lymphatic invasion of nevus cells observed in intradermal nevus.
abstract: A pigmented nevus was observed on the medial aspect of the left scapula of a 30-year-old woman. Histologically, the lesion showed the pattern of a typical intradermal nevus, consisting of type A, B and C cells. However, the most characteristic feature of this intradermal nevus was the projection of polypoid masses of nevus cells containing melanin into the lumen of a lymphatic vessel in the upper dermis. To our knowledge, lymphatic invasion in pigmented nevi is rare; this finding is interesting, if we consider the relationship between nevus cells and lymph nodes.
authors.affiliation: Department of Dermatology, School of Medicine, Tokyo Medical and Dental University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Katsumata
authors.forename: T
authors.initials: T
authors.lastname: Matsunaga
authors.forename: R
authors.initials: R
authors.lastname: Maruyama
authors.forename: K
authors.initials: K
authors.lastname: Ezoe
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008543:Melanins; D009361:Neoplasm Invasiveness; D009508:Nevus, Pigmented / Q000209:etiology / Q000473:pathology*; D012878:Skin Neoplasms / Q000209:etiology / Q000473:pathology*
chemical_list: D008543:Melanins