Barbosa, NCRamos, ASagarribay, ARibeiro, MJ2023-09-112023-09-112020BMJ Case Rep . 2020 Dec 12;13(12):e235630http://hdl.handle.net/10400.17/4693We present a case study of a 5-year-old patient, who presented with left-sided torticollis. Due to persistence of problems, a CT and an MRI were made showing a single osteolytic lesion centred on right occipital condyle. After an open biopsy, histology confirmed it to be Langerhans cell histiocytosis (LCH). Torticollis or restricted range of motion is a presenting feature in 76% of children with LCH with cervical involvement. There remains much debate on the best treatment strategy. The clinical and radiological outcomes of the case study presented on this article support the treatment of LCH with chemotherapy in cases with solitary involvement of the occipital condyle.engChild, PreschoolHistiocytosis, Langerhans-Cell / complicationsHistiocytosis, Langerhans-Cell / diagnosisHistiocytosis, Langerhans-Cell / surgeryMagnetic Resonance ImagingNeck Pain / etiologyOccipital Bone / diagnostic imagingOccipital Bone / pathology*Occipital Bone / surgeryRadionuclide ImagingTomography, X-Ray ComputedTorticollis / etiologyHDE NCIRjournal article10.1136/bcr-2020-235630