PMC5669790_01
Microscopic observation (100x magnification) before and after FSH treatment.. Notes: (A) Histologic patterns before treatment: Sertoli cell-only syndrome. (B) Appearance of sperm cells after FSH treatment (first cycle). (C) Sperm cells after FSH treatment (second cycle).. Abbreviation: FSH, follicle-stimulating hormone.
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After the diagnosis of azoospermia, the patient underwent multiple bilateral testicular biopsies, which showed a histologic pattern corresponding to SCOS and complete absence of germ cells in both testicles (Figure 1).