Novel algorithm for management of acute epididymitis

Hiroshi Hongo, Eiji Kikuchi, Kazuhiro Matsumoto, Satoshi Yazawa, Kent Kanao, Takeo Kosaka, Ryuichi Mizuno, Akira Miyajima, Shiro Saito, Mototsugu Oya

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Objectives: To identify predictive factors for the severity of epididymitis and to develop an algorithm guiding decisions on how to manage patients with this disease. Methods: A retrospective study was carried out on 160 epididymitis patients at Keio University Hospital. We classified cases into severe and non-severe groups, and compared clinical findings at the first visit. Based on statistical analyses, we developed an algorithm for predicting severe cases. We validated the algorithm by applying it to an external cohort of 96 patients at Tokyo Medical Center. The efficacy of the algorithm was investigated by a decision curve analysis. Results: A total of 19 patients (11.9%) had severe epididymitis. Patient characteristics including older age, previous history of diabetes mellitus and fever, as well as laboratory data including a higher white blood cell count, C-reactive protein level and blood urea nitrogen level were independently associated with severity. A predictive algorithm was created with the ability to classify epididymitis cases into three risk groups. In the Keio University Hospital cohort, 100%, 23.5%, and 3.4% of cases in the high-, intermediate-, and low-risk groups, respectively, became severe. The specificity of the algorithm for predicting severe epididymitis proved to be 100% in the Keio University Hospital cohort and 98.8% in the Tokyo Medical Center cohort. The decision curve analysis also showed the high efficacy of the algorithm. Conclusions: This algorithm might aid in decision-making for the clinical management of acute epididymitis.

Original languageEnglish
Pages (from-to)82-87
Number of pages6
JournalInternational Journal of Urology
Issue number1
Publication statusPublished - 2017 Jan 1


  • acute epididymitis
  • diagnosis
  • severity

ASJC Scopus subject areas

  • Urology


Dive into the research topics of 'Novel algorithm for management of acute epididymitis'. Together they form a unique fingerprint.

Cite this