title: [A case of histiocytic necrotizing lymphadenitis showing focal lymph nodes swelling in the abdomen].
abstract: A case was 23 years old woman. She came to our hospital with complain of continuing fever after common cold and mass like an egg was touched in right lower abdomen. No other surface lymph node was swelling. Abdominal US, CT and MRI showed that the mass was existed in the front of the psoas muscle and the maximum diameter of it was 6 cm in which necrotizing lesion was recognized. The size of the lymph node became smaller slowly but we could not perfectly exclude malignant disease, we examined needle biopsy for the diagnosis. The histopathological findings showed the histiocytic necrotizing lymphadenitis (HNL). HNL usually appears in the neck area, but in this case it was detected only in the abdomen. This case was very rare and we reported.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Toho University Ohashi Medical Center.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Suda
authors.forename: Sayo
authors.initials: S
authors.lastname: Itoh
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Saigusa
authors.forename: Kouich
authors.initials: K
authors.lastname: Hirahata
authors.forename: Yukako
authors.initials: Y
authors.lastname: Nemoto
authors.forename: Koichiro
authors.initials: K
authors.lastname: Sato
authors.forename: Tadayoshi
authors.initials: T
authors.lastname: Kakemura
authors.forename: Sumio
authors.initials: S
authors.lastname: Fujinuma
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Sakai
authors.forename: Kei
authors.initials: K
authors.lastname: Takahashi
mesh_terms: D000005:Abdomen; D000328:Adult; D001707:Biopsy, Needle; D005260:Female; D020042:Histiocytic Necrotizing Lymphadenitis / Q000175:diagnosis*; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*