title: Langerhans cell histiocytosis of the lung and thyroid, co-existing with papillary thyroid cancer.
abstract: A 24-year-old man presented to our center with a huge goiter compressing his airway. He had a previous diagnosis of Langerhans cell histiocytosis (LCH) of the lung. Core needle biopsy was consistent with histiocytosis. Thyroidectomy was performed. A very invasive mass was encountered at the time of surgery. Histopathology result was consistent with an invasive papillary cancer of thyroid co-occurring with LCH. Although association of LCH with different malignancies has been reported, co-existing invasive papillary thyroid cancer and LCH is a rare combination.
authors.affiliation: Department of Internal Medicine, National Research Institute of Tuberculosis and Lung Disease (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran. hrjamaati@nritld.ac.ir
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Jamaati
authors.forename: Mohammad Behgam
authors.initials: MB
authors.lastname: Shadmehr
authors.forename: Bahare
authors.initials: B
authors.lastname: Saidi
authors.forename: Adnan
authors.initials: A
authors.lastname: Khosravi
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Arab
authors.forename: Forouzan
authors.initials: F
authors.lastname: Mohammadi