title: Anomalous segmentation of Diphyllobothrium nihonkaiense.
abstract: An anomalous tapeworm with abnormal segmentation was obtained from a 6-year-old boy in Japan. The tapeworm consisted of proglottids with slanted anterior and posterior margins of proglottids and 4-6 sets of reproductive organs arranged between the margins. The morphology of the tapeworm did not correspond to any of the described cestodes. However, molecular identification based on nuclear and mitochondrial genes clearly showed the tapeworm was Diphyllobothrium nihonkaiense.
authors.affiliation: Department of Parasitology, Asahikawa Medical College, Asahikawa, Hokkaido, Japan. yanagida@asahikawa-med.ac.jp
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Yanagida
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsuoka
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kanai
authors.forename: Minoru
authors.initials: M
authors.lastname: Nakao
authors.forename: Akira
authors.initials: A
authors.lastname: Ito
mesh_terms: D000818:Animals; D002648:Child; D018509:DNA, Helminth / Q000032:analysis; D004272:DNA, Mitochondrial / Q000032:analysis; D004169:Diphyllobothriasis / Q000175:diagnosis* / Q000469:parasitology*; D004170:Diphyllobothrium / Q000033:anatomy & histology / Q000145:classification / Q000235:genetics / Q000302:isolation & purification; D005243:Feces / Q000469:parasitology; D006801:Humans; D007564:Japan; D008297:Male; D008969:Molecular Sequence Data; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D018509:DNA, Helminth; D004272:DNA, Mitochondrial; D012337:RNA, Ribosomal, 18S