不妊症精巣のJohnsenのスコア
2013年7月1日
増生能評価の量的基準を示したものである。
| Score10 | Complete spermatogenesis with many spermatozoa (spermatozoa are here defined as cells having achieved the small head form of the spermatozoon). Germinal epithelium organized in a regular thickness leaving an open lumen. |
| Score 9 | Many spermatozoa present but germinal epithelium disorganized with marked sloughing or obliteration of lumen. |
| Score 8 | Only few spermatozoa (<5-10) present in section. |
| Score 7 | No spermatozoa but many spermatids present. |
| Score 6 | No spermatozoa but only few spermatids (<5-10) present. |
| Score 5 | No spermatozoa, no spermatids but several or many spermatocytes present. |
| Score 4 | Only few spermatocytes (<5) and no spermatids or spermatozoa present. |
| Score 3 | Spermatogonia are the only germ cell present. |
| Score 2 | No germ cells but Sertoli cells are present. |
| Score 1 | No cells in tubular section. |
Spermatogenesis, 精子形成, 造精能; Spermatozoon（単）Spermatozoa（複）, 精子; Spermatid, 精子細胞; Spermatocyte, 精母細胞;
文献：
1. Johnsen SG. Testicular biopsy score count – a method for registration of spermatogenesis in human testes: normal values and results in 335 hypogonadal males. Hormones 1970;1:2-25.
2. 寺田充彦, 畠山茂. 不妊症精巣の形態学. 不妊症の臨床と病理. 病理と臨床 1989;7:173-80.
執筆日：2013/07/01
執筆者：神戸大学医学部附属病院病理診断科 酒井康裕
