abnormal Leydig cell morphology Leydig cell atrophy acquired diminution of the interstitial cells that are found adjacent to the seminiferous tubules in the testicle and produce testosterone in the presence of luteinizing hormone (LH), associated with wasting as from death and reabsorption of cells, diminished cellular proliferation, decreased cellular volume, pressure, ischemia, malnutrition, reduced function or malfunction, or hormonal changes MP:0013599 atrophic Leydig cells Leydig cell atrophy