Infant with a small sinus located at the right sternocleidomastoid muscle that had expressed some secretions Pediatric Imaging Surgical-Pathological-Clinical March 13, 2022March 30, 2022 Clinical images show a punctate cyst at the anterior border of the right sternocleidomastoid muscle (above) that with some massaging is seen to emit fluid (below). The diagnosis was a second branchial cleft sinus. Related Published March 13, 2022March 30, 2022