The accumulation of mitochondria proximal to a constriction in sympathetic nerves.
D000818:Animals; D001369:Axons / Q000166:cytology*; D002415:Cats; D008928:Mitochondria; D009409:Nerve Crush; D009416:Nerve Regeneration; D059348:Peripheral Nerve Injuries; D013564:Sympathetic Nervous System / Q000473:pathology*