Feasibility of localizing ectopic testes by 131I-labeled luteinizing hormone scintigraphy.

A new method for localizing ectopic testes preoperatively was investigated in rats. Twenty hours after administration of iodine-131 luteinizing hormone the position of normal descended testes was easily identified by scintigraphy. Clinically, this technique may offer a noninvasive and practical means of locating testes undetected by palpation. The complexity and hazards of the surgical intervention to follow would thus be greatly reduced.