Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Macroorchidism
Introduction
Macroorchidism means having abnormally large testes commonly attributed with fragile X syndrome, the most common inherited form and second most common genetic cause of mental retardation. Trisomy 21 (Down’s Syndrome) is the most common genetic form but is not commonly inherited, only sometimes.