Primary Nevus of a Lymph Node

Abstract
Large clusters of benign-appearing cells closely resembling nevus cells of the commonplace cutaneous nevocellular nevus were found in the capsule and trabeculae of a submandibular lymph node. Although the patient also had invasive squamous cell carcinoma of the larynx, the nevus cells in no way resembled the carcinomatous cells. Clinical and histopathologic evidence from this and other reported cases suggests that proliferation and nevocytic differentiation of aberrant neural crest tissue or Schwannian elements occurred within the fibrous framework of the lymph node. The result is a malformation of neural tissue analogous to a cutaneous nevocellular nevus. Care must be taken to avoid mistaking a primary nevus of a lymph node for a metastatic malignant neoplasm.