title: Langerhans cell histiocytosis of thyroid-a diagnostic dilemma.
abstract: Langerhans cell histiocytosis (LCH) is a rare disease of antigen presenting cells and involvement of thyroid is really uncommon. The thyroid if involved is usually seen in multisystem disease but isolated thyroid involvement is very rare. The diagnosis of Langerhans cell histiocytosis of the thyroid is very challenging due to its rarity and is usually misdiagnosed as benign goiters, undifferentiated carcinoma, lymphoma, etc. Management of Langerhans cell histiocytosis of the thyroid also remains controversial. Prognosis in an isolated Langerhans cell histiocytosis of the thyroid is usually good but as it may precede a multisystem involvement, prolonged follow-up is required. We present a rare case of Langerhans cell histiocytosis of the thyroid, with variable diagnoses on fine needle aspiration cytology.
authors.affiliation: Kilpauk Medical College, No.11, Begum Sahib 3rd Street, Mount Road, Chennai, 600 002 India.
authors.forename: R A
authors.initials: RA
authors.lastname: Pandyaraj
authors.affiliation: Kilpauk Medical College, 32/615 F2, 24th Cross Street, Shanthi Nagar, Palayamkottai, Tirunelveli, 627 002 India.
authors.forename: K
authors.initials: K
authors.lastname: Sathik Mohamed Masoodu
authors.affiliation: Kilpauk Medical College, 22/1, New no. 14, 6th Main Street, Saurashtra Nagar, Choolaimedu, Chennai, 600 094 India.
authors.forename: S
authors.initials: S
authors.lastname: Maniselvi
authors.affiliation: Kilpauk Medical College, No.48, Gowdia Mutt road, Royapettah, Chennai, 600 014 India.
authors.forename: S
authors.initials: S
authors.lastname: Savitha
authors.affiliation: Kilpauk Medical College, GF.3, Vasanth Apartments, No.1, Srikrishnapuram Street, Royapettah, Chennai, 600 014 India.
authors.forename: H
authors.initials: H
authors.lastname: Divya Devi
keywords: Langerhans cell histiocytosis; Lymphoma thyroid; Thyroid tumor; Thyromegaly