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Incidence, Clinical Features, and Outcomes of Langerhans Cell Histiocytosis in the United States. J Pediatr Hematol Oncol 2022; 44:e1006-e1015. [PMID: 35082244 DOI: 10.1097/mph.0000000000002383] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/13/2021] [Indexed: 11/26/2022]
Abstract
Langerhans cell histiocytosis (LCH) is a disorder with highly diverse clinical manifestations. We explored if age, sex, race, organ system involved, and therapy approaches determine patient survival in the era of modern treatments. LCH patient data reported to the Surveillance, Epidemiology, and End Results (SEER) program in 2010-2016 (n=1282; age: 0 to 100 y) was analyzed. Age-specific LCH incidence flattening to a low level suggests an age cutoff for pediatric patients of 20 years. The overall survival probability is lower for patients 21 to 100 years old ( P <0.0001), irrespective of sex and race. The commonest sites involved in the 0- to 20-year age group were bone, skin, and bone marrow; this shifted to lung, bone, and skin as the commonest disease sites in patients 21 to 100 years of age. The treatments applied differed between age groups, as younger versus older patients were more likely to receive chemotherapy-based treatment (48.4% vs. 17%; P <0.0001). There also was a trend toward nonwhite versus white patients being less likely to receive chemotherapy-based treatment (31.7% vs. 38.2%; P =0.067). Whereas there are treatment disparities related to LCH patient age and perhaps race, patient age is the strongest predictor of survival, with patients 21 to 100 years of age with lung, lymph node, skin, and bone marrow disease having the worst outcomes ( P <0.0001).
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Cai HC, Chen J, Liu T, Cai H, Duan MH, Li J, Zhou DB, Cao XX. Langerhans cell histiocytosis in adolescent patients: a single-centre retrospective study. Orphanet J Rare Dis 2022; 17:268. [PMID: 35841042 PMCID: PMC9288061 DOI: 10.1186/s13023-022-02436-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 06/30/2022] [Indexed: 11/19/2022] Open
Abstract
Background Langerhans cell histiocytosis (LCH) is a myeloid dendritic cell disorder frequently affecting children more than adults. The presentation of LCH varies with age, however, the clinical characteristics and genetic profiles of adolescent LCH remain elusive. To address the knowledge gap, we performed a single-centre retrospective study of 36 adolescent LCH patients aged between 14 and 17 years at Peking Union Medical College Hospital. Results At the time of diagnosis, 10 patients were classified as unifocal single system LCH (27.8%), 2 patients had pulmonary single system LCH (5.6%), 5 patients had multifocal single system LCH with bone involvement (13.9%), and 19 patients had multisystem LCH (52.8%). The most prevalent involvement in multisystem patients was the pituitary gland (78.9%), followed by the bone (42.1%), lung (42.1%), and lymph nodes (42.1%). Eight (42.1%) patients had risk organ involvement. BRAFN486_P490 was detected in 50% of patients who underwent next generation sequencing, and BRAFV600E was detected in one patient. Chemotherapies were the first line treatment in 24 patients. One patient died and thirteen patients relapsed during the follow-up. The estimated 5-year OS rate and EFS rate were 94.7% and 59.0%, respectively. Conclusions In this study, we report a large series of adolescent LCH patients. The clinical characteristics of adolescent LCH patients may be close to adult LCH. Compared with pediatric cases, adolescent LCH tends to have more pituitary lesions and pulmonary involvement, fewer skin and hematopoietic involvement, a higher frequency of BRAF deletion mutation, and a lower frequency of BRAFV600E mutation. Supplementary Information The online version contains supplementary material available at 10.1186/s13023-022-02436-0.
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Affiliation(s)
- Hua-Cong Cai
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jia Chen
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ting Liu
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Cai
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ming-Hui Duan
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jian Li
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Dao-Bin Zhou
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xin-Xin Cao
- Department of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. .,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Educational Case: Langerhans cell histiocytosis. Acad Pathol 2022; 9:100018. [PMID: 35600746 PMCID: PMC9115723 DOI: 10.1016/j.acpath.2022.100018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 12/24/2021] [Accepted: 01/03/2022] [Indexed: 11/23/2022] Open
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Tang X, Gao J, Ma ZG, Guo X, Li Q, Wan Z, Sun JJ. Clinical and prognostic characteristics of 95 cases of Langerhans cell histiocytosis in children: a single-institute experience from 2013 to 2020. Ann Med 2021; 53:1537-1546. [PMID: 34459688 PMCID: PMC8409935 DOI: 10.1080/07853890.2021.1966085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND This study aimed to understand the clinical characteristics and outcomes of children with Langerhans cell histiocytosis (LCH) in China. METHODS We conducted a retrospective study of 95 paediatric patients with LCH in West China Second University Hospital of Sichuan University between July 2013 and August 2020. RESULTS The onset age of multisystem LCH (MS-LCH) patients with risk organ (RO) involvement was younger than that of MS-LCH without RO involvement (p = .002) and single system LCH (p < .001) patients; bone was the most frequently involved organ, followed by the skin. Of all, the BRAF-V600E mutation was detected in 48 out of 84 patients who underwent gene analysis. Additionally, in our study, BRAF p.N486_T491 > K, BRAF p.L485_P490delinsF, BRAF p.R506_K507insLLR, ARAF p.Q349_F351delinsL and MAP2K1 p.Q58_E62del were known mutations in the mitogen-activated protein kinase (MAPK) pathway. The BRAF-V600E genotype in the tissue and plasma prior to therapy were detected in 16 patients, and the concordance was only 37.5% (6/16). According to the modified LCH-III-based-protocol, JLSG-02 protocol chemotherapy, and vemurafenib, the estimated five-year overall survival, event-free survival (EFS) and cumulative reactivation rates of 95 patients were 98.8%, 74.6% and 24.5%, respectively. The EFS rate in good responders was better than that in poor responders at 12-week (HR = 0.022, 95%CI 0.002-0.231, p = .002), and EFS was not affected by age, RO involvement or BRAF-V600E mutation. Regarding sequelae, nine patients had central diabetes insipidus and two had growth retardation. CONCLUSIONS In this study, LCH was a highly heterogeneous disease characterized molecularly by MAPK-pathway activating mutations. Vincristine, prednisone and cytarabine-based chemotherapy combined with vemurafenib improved the prognosis of childhood LCH. In future, prospective clinical trials and novel therapeutic strategies should be developed to improve outcomes in paediatric patients with LCH.KEY MESSAGEChildren with Langerhans cell histiocytosis in China present highly heterogeneous clinical characteristics, with up to 60% of cases harbouring mutations in MAPK pathway.Treatment response at 12-week is associated with EFS in our study.Vincristine, prednisone and cytarabine-based chemotherapy combined with vemurafenib improved the prognosis of Chinese childhood LCH, but the reactivation rate is still high.
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Affiliation(s)
- Xue Tang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Ju Gao
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Zhi-Gui Ma
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Xia Guo
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Qiang Li
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Zhi Wan
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Jing-Jing Sun
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
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McClain KL, Bigenwald C, Collin M, Haroche J, Marsh RA, Merad M, Picarsic J, Ribeiro KB, Allen CE. Histiocytic disorders. Nat Rev Dis Primers 2021; 7:73. [PMID: 34620874 PMCID: PMC10031765 DOI: 10.1038/s41572-021-00307-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/07/2021] [Indexed: 12/18/2022]
Abstract
The historic term 'histiocytosis' meaning 'tissue cell' is used as a unifying concept for diseases characterized by pathogenic myeloid cells that share histological features with macrophages or dendritic cells. These cells may arise from the embryonic yolk sac, fetal liver or postnatal bone marrow. Prior classification schemes align disease designation with terminal phenotype: for example, Langerhans cell histiocytosis (LCH) shares CD207+ antigen with physiological epidermal Langerhans cells. LCH, Erdheim-Chester disease (ECD), juvenile xanthogranuloma (JXG) and Rosai-Dorfman disease (RDD) are all characterized by pathological ERK activation driven by activating somatic mutations in MAPK pathway genes. The title of this Primer (Histiocytic disorders) was chosen to differentiate the above diseases from Langerhans cell sarcoma and malignant histiocytosis, which are hyperproliferative lesions typical of cancer. By comparison LCH, ECD, RDD and JXG share some features of malignant cells including activating MAPK pathway mutations, but are not hyperproliferative. 'Inflammatory myeloproliferative neoplasm' may be a more precise nomenclature. By contrast, haemophagocytic lymphohistiocytosis is associated with macrophage activation and extreme inflammation, and represents a syndrome of immune dysregulation. These diseases affect children and adults in varying proportions depending on which of the entities is involved.
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Affiliation(s)
- Kenneth L McClain
- Texas Children's Cancer Center, Department of Paediatrics, Baylor College of Medicine, Houston, TX, USA.
| | - Camille Bigenwald
- Department of Oncological Sciences and Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Matthew Collin
- Human Dendritic Cell Lab, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Julien Haroche
- Department of Internal Medicine, Institut E3M French Reference Centre for Histiocytosis, Pitié-Salpȇtrière Hospital, Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Paris, France
| | - Rebecca A Marsh
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, and University of Cincinnati, Cincinnati, OH, USA
| | - Miriam Merad
- Department of Oncological Sciences and Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jennifer Picarsic
- Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Karina B Ribeiro
- Faculdade de Ciȇncias Médicas da Santa Casa de São Paulo, Department of Collective Health, São Paulo, Brazil
| | - Carl E Allen
- Texas Children's Cancer Center, Department of Paediatrics, Baylor College of Medicine, Houston, TX, USA
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Langerhans cell histiocytosis: Case report and literature review. ACTA ACUST UNITED AC 2021; 41:396-402. [PMID: 34559487 PMCID: PMC8519595 DOI: 10.7705/biomedica.5430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Indexed: 12/02/2022]
Abstract
La histiocitosis de células de Langerhans comprende un grupo heterogéneo de enfermedades inflamatorias cuyos principales componentes celulares son las células dendríticas y los macrófagos. El infiltrado inflamatorio puede afectar la piel y otros órganos, y el resultado clínico varía de leve a letal, dependiendo del subconjunto de células involucradas y el compromiso multisistémico. La demora en el diagnóstico puede ocurrir debido a su presentación inespecífica y a que los médicos tratantes no suelen sospecharla. Se reporta el caso de una lactante mayor a la cual, a pesar de múltiples consultas con síntomas inespecíficos pero característicos de la enfermedad, solamente se le pudo hacer el diagnóstico gracias a los hallazgos histopatológicos.
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Singh J, Rajakulasingam R, Saifuddin A. Langerhans cell histiocytosis of the shoulder girdle, pelvis and extremities: a review of radiographic and MRI features in 85 cases. Skeletal Radiol 2020; 49:1925-1937. [PMID: 32451558 DOI: 10.1007/s00256-020-03472-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To describe the radiographic and MRI features of histologically proven Langerhans cell histiocytosis (LCH) of the bone. MATERIALS AND METHODS A retrospective review of the radiographic and MRI features of 85 histologically proven cases of skeletal LCH over a 12-year period. Clinical data recorded included age, gender and location. Radiographic features evaluated included Lodwick grading, cortical/periosteal response and matrix mineralisation. MRI features assessed included lesion size and T1-weighted signal intensity (T1W SI), nature of margin, hypointense rim, enhancement pattern, bone marrow and soft tissue oedema, soft tissue mass, fluid-fluid levels, the penumbra sign and the budding and bulging signs. RESULTS The study included 85 patients, 54 males and 31 females with mean age of 13 years (range 1-76 years). The femur was the commonest bone involved (38.8%), followed by the scapula (9.4%), clavicle (8.2%), ilium (8.2%) and ischium (8.2%). The mean maximal lesion size was 40 mm (range 16-85 mm). The commonest radiographic appearance was of a lytic lesion with no appreciable sclerotic rim, an intact expanded cortex and either absent or laminated periosteal response. MRI demonstrated a hypointense rim (41.5%), the budding (31.7%) and bulging (36.6%) signs, eccentric extra-osseous mass (42.7%), prominent bone marrow (95.3%) and soft tissue oedema (84.1%). Rarer features included haemorrhage (2.4%), the penumbra sign (3.5%) and fluid-fluid levels (2.4%). Thirteen of 25 post-contrast studies showed peripheral/rim enhancement with central necrosis. CONCLUSIONS LCH classically presents as a moderately aggressive lytic bone lesion on radiography, with prominent reactive bone and soft tissue oedema being a characteristic feature on MRI.
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Affiliation(s)
- J Singh
- Department of Medical Imaging, Guru Nanak Dev Superspeciality hospital, Goindwal Sahib Road, Taran Sahib, Punjab, 143401, India
| | - R Rajakulasingam
- Department of Medical Imaging, Royal National Orthopaedic Hospital, Stanmore, Middlesex, HA7 4LP, UK.
| | - A Saifuddin
- Department of Medical Imaging, Royal National Orthopaedic Hospital, Stanmore, Middlesex, HA7 4LP, UK
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Han M, Kim LH, Shpanskaya K, Kim C, Iv M, Jeng M, Yeom KW. Altered cerebral perfusion in children with Langerhans cell histiocytosis after chemotherapy. Pediatr Blood Cancer 2020; 67:e28104. [PMID: 31802628 DOI: 10.1002/pbc.28104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/20/2019] [Accepted: 11/07/2019] [Indexed: 01/24/2023]
Abstract
BACKGROUND AND PURPOSE Children with Langerhans cell histiocytosis (LCH) may develop a wide array of neurological symptoms, but associated cerebral physiologic changes are poorly understood. We examined cerebral hemodynamic properties of pediatric LCH using arterial spin-labeling (ASL) perfusion magnetic resonance imaging (MRI). MATERIALS AND METHODS A retrospective study was performed in 23 children with biopsy-proven LCH. Analysis was performed on routine brain MRI obtained before or after therapy. Region of interest (ROI) methodology was used to determine ASL cerebral blood flow (CBF) (mL/100 g/min) in the following bilateral regions: angular gyrus, anterior prefrontal cortex, orbitofrontal cortex, dorsal anterior cingulate cortex, and hippocampus. Quantile (median) regression was performed for each ROI location. CBF patterns were compared between pre- and posttreatment LCH patients as well as with age-matched healthy controls. RESULTS Significantly reduced CBF was seen in posttreatment children with LCH compared to age-matched controls in angular gyrus (P = .046), anterior prefrontal cortex (P = .039), and dorsal anterior cingulate cortex (P = .023). Further analysis revealed dominant perfusion abnormalities in the right hemisphere. No significant perfusion differences were observed in the hippocampus or orbitofrontal cortex. CONCLUSION Perfusion in specific cerebral regions may be consistently reduced in children with LCH, and may represent effects of underlying disease physiology and/or sequelae of chemotherapy. Studies that combine a formal cognitive assessment and hemodynamic data may further provide insight into perfusion deficits associated with the disease and the potential neurotoxic effects in children treated by chemotherapy.
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Affiliation(s)
- Michelle Han
- Department of Pediatrics, Pediatric Hematology/Oncology, Stanford University School of Medicine, Stanford, California
| | - Lily H Kim
- Department of Pediatrics, Pediatric Hematology/Oncology, Stanford University School of Medicine, Stanford, California
| | - Katie Shpanskaya
- Department of Pediatrics, Pediatric Hematology/Oncology, Stanford University School of Medicine, Stanford, California
| | - Christine Kim
- Department of Radiology, Stanford University and Stanford University Medical Center, Stanford, California
| | - Michael Iv
- Department of Radiology, Stanford University and Stanford University Medical Center, Stanford, California
| | - Michael Jeng
- Department of Pediatrics, Pediatric Hematology/Oncology, Lucile Packard Children's Hospital, Stanford University, Palo Alto, California
| | - Kristen W Yeom
- Department of Radiology, Lucile Packard Children's Hospital, School of Medicine, Stanford University, Palo Alto, California
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Pediatric Langerhans cell histiocytosis: the impact of mutational profile on clinical progression and late sequelae. Ann Hematol 2019; 98:1617-1626. [DOI: 10.1007/s00277-019-03678-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 03/19/2019] [Indexed: 12/11/2022]
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Affiliation(s)
- Carl E Allen
- From the Texas Children's Cancer Center and the Department of Pediatrics, Baylor College of Medicine, Houston (C.E.A., K.L.M.); and the Department of Oncological Sciences, the Precision Immunology Institute, and the Tisch Cancer Institute, Icahn School of Medicine, New York (M.M.)
| | - Miriam Merad
- From the Texas Children's Cancer Center and the Department of Pediatrics, Baylor College of Medicine, Houston (C.E.A., K.L.M.); and the Department of Oncological Sciences, the Precision Immunology Institute, and the Tisch Cancer Institute, Icahn School of Medicine, New York (M.M.)
| | - Kenneth L McClain
- From the Texas Children's Cancer Center and the Department of Pediatrics, Baylor College of Medicine, Houston (C.E.A., K.L.M.); and the Department of Oncological Sciences, the Precision Immunology Institute, and the Tisch Cancer Institute, Icahn School of Medicine, New York (M.M.)
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Peckham-Gregory EC, McClain KL, Allen CE, Scheurer ME, Lupo PJ. The role of parental and perinatal characteristics on Langerhans cell histiocytosis: characterizing increased risk among Hispanics. Ann Epidemiol 2018; 28:521-528. [PMID: 29724524 PMCID: PMC6054892 DOI: 10.1016/j.annepidem.2018.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/23/2018] [Accepted: 04/10/2018] [Indexed: 12/24/2022]
Abstract
PURPOSE Potential roles of inherited and environmental risk factors in pathogenesis of Langerhans cell histiocytosis (LCH), a myeloid neoplastic disorder, are undefined. We therefore evaluated the role of parental and perinatal factors on the risk of this childhood cancer. METHODS Information on LCH cases (n = 162) for the period 1995-2011 was obtained from the Texas Cancer Registry. Birth certificate controls were frequency-matched on year of birth at a ratio of 10:1 for the same period. Variables evaluated included parental age, race/ethnicity, size for gestational age, and birth order. Logistic regression was used to generate an adjusted odds ratio (aOR) and 95% confidence interval (CI) testing the association between each factor and LCH. RESULTS Few perinatal or parental factors were associated with LCH risk, with the exception of race/ethnicity. Mothers of Hispanic ethnicity were more likely to have children who developed LCH compared to non-Hispanic whites (aOR: 1.51; 95% CI: 1.02-2.25). This risk increased when both parents were Hispanic (aOR: 1.80; 95% CI: 1.13-2.87). Non-Hispanic black mothers were suggested as less likely to give birth to offspring who developed LCH compared to non-Hispanic whites (aOR: 0.50; 95% CI: 0.24-1.02). CONCLUSIONS LCH is characterized by somatic mutations in MAPK pathway genes in myeloid precursors. Increased risk for LCH in children of Hispanic parents suggests potential impact of inherited factors on LCH pathogenesis.
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Affiliation(s)
- Erin C Peckham-Gregory
- Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, TX; Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, Houston, TX
| | - Kenneth L McClain
- Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, TX; Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, Houston, TX
| | - Carl E Allen
- Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, TX; Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, Houston, TX; Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX
| | - Michael E Scheurer
- Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, TX; Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, Houston, TX
| | - Philip J Lupo
- Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, TX; Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, Houston, TX.
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MRI and clinical features of Langerhans cell histiocytosis (LCH) in the pelvis and extremities: can LCH really look like anything? Skeletal Radiol 2016; 45:607-13. [PMID: 26802000 DOI: 10.1007/s00256-016-2330-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/01/2016] [Accepted: 01/04/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To assess clinical and MRI features of Langerhans cell histiocytosis in the pelvis and extremities. MATERIALS AND METHODS The MRI and clinical features of 21 pathologically proven cases of LCH involving the pelvis and extremities were studied. Multiple characteristics of the lesions were evaluated (location, size, T1/ T2/post-contrast features, perilesional bone and soft tissue signal, endosteal scalloping, periosteal reaction, soft tissue mass, pathologic fracture). Pre-biopsy radiologic diagnoses were collected from the original clinical reports. Erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), temperature, and white blood cell count (WBC) were collected at the time of diagnosis when available. RESULTS The locations of the LCH lesions included five humerus, four femur, five ilium, one tibia, one clavicle, and three scapula. Lesional size ranged from 1.8 to 7.1 cm, with a mean of 3.6 cm. All lesions demonstrated perilesional bone marrow edema, periosteal reaction, endosteal scalloping, and post-contrast enhancement. An associated soft tissue mass was present in 15/21 (71.4 %). Clinically, the WBC, ESR, and CRP were elevated in 2/14 (14 %), 8/12 (67 %), and 4/10 (40 %) of cases, respectively. Fever was documented in 1/15 (7 %) patients and pain was reported in 15/15 (100 %). CONCLUSIONS The clinical and radiologic features of LCH in the pelvis and extremities overlap with infection and malignancy, but LCH must be considered in the differential diagnosis, as it routinely presents with aggressive MRI features, including endosteal scalloping, periosteal reaction, perilesional edema, and a soft tissue mass. Furthermore, an unknown skeletal lesion at presentation without aggressive MRI features is unlikely to represent LCH.
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Monsereenusorn C, Rodriguez-Galindo C. Clinical Characteristics and Treatment of Langerhans Cell Histiocytosis. Hematol Oncol Clin North Am 2015; 29:853-73. [PMID: 26461147 DOI: 10.1016/j.hoc.2015.06.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Langerhans cell histiocytosis (LCH) is a disease caused by clonal proliferation of CD1a+/CD207+ cells that is characterized by a spectrum of varying degrees of organ involvement and dysfunction. Treatment of LCH is risk adapted; patients with single lesions may respond well to local treatment, whereas patients with multi-system disease and risk-organ involvement require more intensive therapy. Although survival for patients without organ dysfunction is excellent, mortality rates for patients with organ dysfunction may reach 30% to 40%. For patients with low-risk disease, although cure is almost universal, disease reactivation rates are in excess of 30%.
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Affiliation(s)
- Chalinee Monsereenusorn
- Department of Pediatric Oncology, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, 450 Brookline Avenue D3-133, Boston, MA 02215, USA
| | - Carlos Rodriguez-Galindo
- Department of Pediatric Oncology, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, 450 Brookline Avenue D3-133, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
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Ribeiro KB, Degar B, Antoneli CBG, Rollins B, Rodriguez-Galindo C. Ethnicity, race, and socioeconomic status influence incidence of Langerhans cell histiocytosis. Pediatr Blood Cancer 2015; 62:982-7. [PMID: 25586293 DOI: 10.1002/pbc.25404] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/25/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND Langerhans cell histiocytosis (LCH) is a rare disease, and its etiology is not well understood. Population-based studies may contribute to etiologic research by defining incidence patterns. This study was designed to evaluate the descriptive epidemiology of disseminated LCH in the United States, using data from population-based cancer registries. PROCEDURE We analyzed the incidence and survival of disseminated LCH in children and adolescents (0-19 years) from 18 SEER registries during 2000-2009. Age-standardized incidence rates (ASIR) per million and rate ratios (RR) were calculated by gender, race, ethnicity, age, and socioeconomic variables (crowding, rural/urban, education, and poverty) using the SEER*Stat software 8.0.1. Relative survival (RS) estimates were calculated using Ederer II method. RESULTS One hundred forty-five cases of disseminated LCH were recorded; ASIR was 0.70/million per year. Lower ASIR was observed for blacks (vs. whites) (RR = 0.41, 95% CI 0.18-0.81), while higher ASIR was noted for Hispanics (vs. non-Hispanics) (RR = 1.63, 95% CI 1.15-2.29). Risk of LCH was higher in crowded counties (RR = 1.84, 95% CI 1.31-2.58) and also in areas with low educational level (RR = 1.49, 95% CI 1.02-2.22). Five-year relative survival was 90.0% (95% CI 83.0-94.2). Important differences in survival were noted according to gender (male: RS = 96.0 vs. female: RS = 83.4%, P = 0.029) and age (<1 year: RS = 78.5, 1-4 years: RS = 95.6%, 5-19 years: RS = 100%, P = 0.004). CONCLUSIONS This population-based study shows significant variations in the incidence of disseminated LCH by race and ethnic group, as well as the influence of socioeconomic factors. These data may provide clues to causation and point toward the need for analytical epidemiologic studies.
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Affiliation(s)
- Karina Braga Ribeiro
- Faculdade de Ciências Médicas da Santa Casa de São Paulo, Department of Social Medicine, São Paulo, Brazil
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Obert J, Tazi A. [Pulmonary manifestations of Langerhans cell histiocytosis]. Rev Mal Respir 2015; 32:850-66. [PMID: 26003197 DOI: 10.1016/j.rmr.2015.01.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 01/13/2015] [Indexed: 01/20/2023]
Abstract
Pulmonary Langerhans cell histiocytosis is a rare diffuse cystic interstitial pneumonia of unknown etiology that occurs selectively in young smokers of both genders. The multicenter studies conducted by the reference center have better defined the short and medium terms natural history of the disease and the clinical management of patients. A substantial proportion of patients experience a dramatic decline in their lung function soon after diagnosis. Importantly, smoking cessation is associated with a decreased risk of subsequent deterioration. Cladribine, a purine analogue, chemotherapy may dramatically improve lung function in patients with progressive pulmonary Langerhans cell histiocytosis, but this treatment should be used only in the setting of clinical research. Specific pulmonary hypertension therapies (anti-endothelin receptors, inhibitors of phosphodiesterases) may be used with caution in specialized centres for patients with severe pulmonary hypertension, and seem to be well tolerated. The recent identification of the V600E mutation of the BRAF oncogene in approximately half of the Langerhans cell histiocytosis lesions, including pulmonary granulomas, represents an important step forward in the understanding of the pathogenesis of Langerhans cell histiocytosis. Potentially it opens the way to targeted therapies.
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Affiliation(s)
- J Obert
- Service de pneumologie, Centre national de référence de l'histiocytose langerhansienne, hôpital Saint-Louis, Assistance publique-Hôpitaux de Paris, 1, avenue Claude-Vellefaux, 75475 Paris cedex 10, France
| | - A Tazi
- Service de pneumologie, Centre national de référence de l'histiocytose langerhansienne, hôpital Saint-Louis, Assistance publique-Hôpitaux de Paris, 1, avenue Claude-Vellefaux, 75475 Paris cedex 10, France; U1153 CRESS, équipe de recherche en biostatistiques et épidémiologie clinique, université Paris Diderot, Sorbonne Paris Cité, 75013 Paris, France.
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Maia RC, de Rezende LMM, Robaina M, Apa A, Klumb CE. Langerhans cell histiocytosis: Differences and similarities in long-term outcome of paediatric and adult patients at a single institutional centre. Hematology 2014; 20:83-92. [DOI: 10.1179/1607845414y.0000000173] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- Raquel Ciuvalschi Maia
- Programa de Pesquisa em Hemato-Oncologia MolecularInstituto Nacional de Câncer (INCA), Rio de Janeiro (RJ), Brazil
- Serviço de Hematologia, Hospital do Câncer-I, INCA, RJ, Brazil
| | | | - Marcela Robaina
- Programa de Pesquisa em Hemato-Oncologia MolecularInstituto Nacional de Câncer (INCA), Rio de Janeiro (RJ), Brazil
| | - Alexandre Apa
- Serviço de Hematologia, Hospital do Câncer-I, INCA, RJ, Brazil
| | - Claudete Esteves Klumb
- Programa de Pesquisa em Hemato-Oncologia MolecularInstituto Nacional de Câncer (INCA), Rio de Janeiro (RJ), Brazil
- Serviço de Hematologia, Hospital do Câncer-I, INCA, RJ, Brazil
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Herwig MC, Wojno T, Zhang Q, Grossniklaus HE. Langerhans cell histiocytosis of the orbit: five clinicopathologic cases and review of the literature. Surv Ophthalmol 2012; 58:330-40. [PMID: 23246282 DOI: 10.1016/j.survophthal.2012.09.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2012] [Revised: 09/14/2012] [Accepted: 09/18/2012] [Indexed: 01/01/2023]
Abstract
Langerhans cell histiocytosis (LCH) is a proliferation of Langerhans cells intermixed with inflammatory cells, in particular eosinophils, that may manifest as unisystem (unifocal or multifocal) or multisystem disease. Orbital involvement typically manifests as a solitary lesion that carries a favorable prognosis. We describe the clinical and histologic spectrum of LCH of the orbit in our five cases. One patient exhibited multifocal unisystem disease; the other four had a localized process. Typical histologic features included numerous histiocytes with varying degrees of giant cell formation and scattered eosinophilic granulocytes. The presence of Langerhans cells was confirmed by CD1a and S100 immunohistochemistry. Transmission electron microscopy demonstrated characteristic intracytoplasmic Birbeck granules. We review the different ophthalmic manifestations of LCH and treatment strategies. As LCH may solely involve the orbit, treatment is based on the degree of organ involvement. LCH should included in the differential diagnosis in tumors of the ocular adnexae, especially in young children.
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Affiliation(s)
- Martina C Herwig
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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