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. 2011 Dec 12;14(1):88–93. doi: 10.1038/aja.2011.57

Table 1. Studies comparing conventional testicular sperm extraction (cTESE) to microsurgical testicular sperm extraction (mTESE) in regard to sperm retrieval rate (SRR).

Study cTESE mTESE
  n SRR (%) n SRR (%)
Okada et al.33 24 17 74 45
Ramasamy et al.40 83 32 460 58
Tsujimura et al.41 37 35 56 43
Average SRR (%) 40 (16–63) 48 (42–58)