Surgical resection of calcinosis circumscripta in the funicular part of the nuchal ligament in the cranial cervical region of a horse

This report describes a 10-year-old Welsh Section D gelding presented for signs of neck stiffness that was found to have a mineralised lesion in the funicular part of the nuchal ligament overlying the dorsal aspect of the first cervical vertebra using radiography and ultrasonography. Surgical resection of the mass, including a complete removal of the adjacent nuchal ligament, resulted in improvement in the signs of neck stiffness. Histopathological examination identified the mass as calcinosis circumscripta. These lesions do not appear to have been reported at this site nor has outcome following excision of a complete section of the nuchal ligament.