| Namespace | MPheno.ontology | Obsolete | false |
| description | greater than the expected number of rare testicular tumors of the male gonadal interstitium, occurring in a specific population in a given time period; Leydig cell tumors are frequently hormonally active, leading to feminizing or virilizing syndromes; Leydig cell tumors comprise 1-3% of all testicular neoplasms, can be pure or mixed with other sex cord-stromal or germ cell tumors, and are usually benign, although malignant variants also occur |
