{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T18:22:37Z","timestamp":1789064557605,"version":"build-2803163510"},"reference-count":13,"publisher":"Scientific Scholar","issue":"5","license":[{"start":{"date-parts":[[2024,9,1]],"date-time":"2024-09-01T00:00:00Z","timestamp":1725148800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Langerhans cell histiocytosis (LCH), a rare hematological disorder, presents significant diagnostic challenges due to its varied clinical manifestations. This study aims to analyse the use of F-18 fluoro-deoxy-glucose positron emission tomography computed tomography (F-18 FDG PET\/CT) in diagnosis, staging, and management of LCH.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>Fifty-nine patients with LCH were included, who underwent a total of ninety-three F-18 FDG PET\/CT scans (including follow-up scans in 19 patients). The sites of abnormal FDG uptake were assessed and the maximum standardized uptake value was measured in all the scans.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Twenty-five patients (42.4%) had single system LCH (SS-LCH) and 34 patients (57.6%) had multisystem involvement LCH, 49\/59. The most common sites of LCH involvement were bones (49\/59, 83.1%) and lymph nodes (39\/59, 44.9%). 12\/59 patients (20.3%) had unifocal SS-LCH bone lesions, mostly in skull. The other common sites involved were lungs, liver, spleen, marrow, skin, and soft tissues. Less commonly involved sites included pancreas (2 cases), occipital lobe (1 case), and bowel (1 case). PET\/CT was used in response assessment in 19 patients and helped in initiation of second line chemotherapy in cases of disease progression (2 cases) and relapse (2 cases). Seven cases with clinical suspicion were diagnosed as LCH based on lesion characteristics and FDG uptake, which were later biopsy proven.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>F-18 FDG PET\/CT revealed morphological and metabolic characteristics of LCH lesions, aiding in accurate diagnosis, assessment of disease burden, and prognostication, thereby can be used as a comprehensive imaging tool in management of LCH.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/ijnm.ijnm_46_24","type":"journal-article","created":{"date-parts":[[2025,1,27]],"date-time":"2025-01-27T08:00:23Z","timestamp":1737964823000},"page":"341-346","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["[18F]FDG- PET\/CT in Diagnosis, Staging, and Management of Patients with Langerhans Cell Histiocytosis"],"prefix":"10.25259","volume":"39","author":[{"given":"V M Vimala","family":"Priyadharshini","sequence":"first","affiliation":[{"name":"Department of Nuclear Medicine, Apollo Hospitals, Chennai, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Indirani","family":"Muthukrishnan","sequence":"additional","affiliation":[{"name":"Department of Nuclear Medicine, Apollo Hospitals, Chennai, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dinesh Kumar","family":"Gauthaman","sequence":"additional","affiliation":[{"name":"Department of Nuclear Medicine, Apollo Hospitals, Chennai, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shelley","family":"Simon","sequence":"additional","affiliation":[{"name":"Department of Nuclear Medicine, Apollo Hospitals, Chennai, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"10894","published-online":{"date-parts":[[2025,1,25]]},"reference":[{"key":"R1-20250127","doi-asserted-by":"crossref","first-page":"78","DOI":"10.4103\/ijnm.ijnm_102_21","article-title":"Multifocal, multisystem presentation of adult-onset Langerhans cell histiocytosis on 18F-fluorodeoxyglucose positron-emission tomography-computed tomography: A rare case report","volume":"37","author":"Pankaj","year":"2022","journal-title":"Indian J Nucl Med"},{"key":"R2-20250127","doi-asserted-by":"crossref","first-page":"2341","DOI":"10.1016\/S0959-8049(03)00672-5","article-title":"Langerhans cell histiocytosis in adults. 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