Concomitant Langerhans cell histiocytosis of cervical lymph nodes in adult patients with papillary thyroid carcinoma: A report of two cases and review of the literature
Objective: Langerhans cell histiocytosis (LCH) is an uncommon entity of unknown etiology.It contains a wide range of clinical presentations.The discovery of oncogenic BRAF V600E mutation in LCH has provided additional evidence that LCH is a neoplasm.Papillary thyroid carcinoma is the most common cancer of the thyroid characterized by a high inciden