hematocele
  積血
  he·ma·to·cele /ˈhɪmətəˌsɪl, hɪˈmætə-/ 名詞
  血囊腫,積血
  He·mat·o·cele n.  Med. A tumor filled with blood.
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  hematocele
       n : swelling caused by blood collecting in a body cavity
           (especially a swelling of the membrane covering the
           testis) [syn: haematocele, hematocoele, haematocoele]