Weight-lifter training causing pectoral neuropathy

We report two weightlifters, presenting with progressive atrophy and weakness of the medial portion of pectoralis major muscle. We discuss possible differential diagnoses and propose a clinical and neurophysiological approach. Our cases highlight that the syndrome may be unilateral or bilateral, probably due to anatomical susceptibility and hyper-training. We review this rare syndrome and promote its awareness and full diagnostic assessment, aiming to its prompt recognition in weightlifters.