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Bonometti A. Unifocal Type-3 Mixed Histiocytosis in a 10-Years Old Child. Fetal Pediatr Pathol 2024; 43:66-70. [PMID: 37606204 DOI: 10.1080/15513815.2023.2245489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/02/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND Histiocytoses patients present with highly heterogeneous clinical and histopathological pictures requiring multidisciplinary management. Mixed histiocytosis is a recently described group of syndromes defined by the histological overlap of Langerhans cell histiocytosis and other histiocytic proliferations that include three clinically and prognostically different conditions (i.e., Type-1-3 mixed histiocytosis). CASE REPORT We describe a 10 year-old boy with unifocal (type-3) mixed histiocytosis - Langerhans cell histiocytosis combined with a lesion with features intermediate between Rosai-Dorfman disease and reticulohistiocytosis. Sixty months after excision, the child is disease free. DISCUSSION Cutaneous type-3 mixed histiocytosis (Langerhans cell histiocytosis with Rosai-Dorfman disease/reticulohistiocytosis) may occur in older childhood, be unifocal, and be cured by surgical excision.
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Affiliation(s)
- Arturo Bonometti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- Pathology Unit, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
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2
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Riancho JA, Hernández JL, González-Vela C, López-Sundh AE, González-Lopez MA, Gomez de la Fuente F, Quirce R, Diamond EL. Erdheim-Chester Disease Due to a Novel Internal Duplication of NRAS: Response to Targeted Therapy with Cobimetinib. Int J Mol Sci 2023; 24:15467. [PMID: 37895147 PMCID: PMC10606995 DOI: 10.3390/ijms242015467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/08/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Histiocytoses encompass a group of exceptionally rare disorders characterized by the abnormal infiltration of tissues by histocytes. Among these, Erdheim-Chester disease (ECD) stands out as a multisystem histiocytosis that typically affects bones and various other tissues. Historically, the treatment of ECD has been challenging. However, recent breakthroughs in our understanding, particularly the discovery of somatic mutations in the RAS-MAPK pathway, have opened new opportunities for targeted therapy in a significant subset of patients with ECD and other histiocytoses. In this report, we present the case of a patient with ECD harboring a previously unidentified microduplication in the NRAS gene in a small fraction of skin cells. This discovery played a pivotal role in tailoring an effective therapeutic approach involving kinase inhibitors downstream of NRAS. This case underscores the crucial role of deep sequencing of tissue samples in ECD, enabling the delivery of personalized targeted therapy to patients.
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Affiliation(s)
- José A. Riancho
- Servicio de Medicina Interna, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, CIBERER, 39008 Santander, Spain;
| | - José L. Hernández
- Servicio de Medicina Interna, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, CIBERER, 39008 Santander, Spain;
| | - Carmen González-Vela
- Servicio de Anatomía Patológica, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, 39008 Santander, Spain
| | - Ana E. López-Sundh
- Servicio de Dermatología, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, 39008 Santander, Spain; (A.E.L.-S.); (M.A.G.-L.)
| | - Marcos A. González-Lopez
- Servicio de Dermatología, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, 39008 Santander, Spain; (A.E.L.-S.); (M.A.G.-L.)
| | - Francisco Gomez de la Fuente
- Servicio de Medicina Nuclear, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, 39008 Santander, Spain; (F.G.d.l.F.); (R.Q.)
| | - Remedios Quirce
- Servicio de Medicina Nuclear, Hospital U.M. Valdecilla, Universidad de Cantabria, IDIVAL, 39008 Santander, Spain; (F.G.d.l.F.); (R.Q.)
| | - Eli L. Diamond
- Departments of Neurology and Medicine, Memorial Sloan Kettering Center, New York, NY 10065, USA;
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Bonometti A. Cutaneous involvement in Ph-negative myeloproliferative neoplasms: from extramedullary hematopoiesis to myeloid metastasis with histiocytic differentiation. A systematic review of the literature. Int J Dermatol 2023; 62:1228-1236. [PMID: 37649236 DOI: 10.1111/ijd.16809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023]
Abstract
Myeloid neoplasms may metastasize to the skin, presenting a wide range of clinical-pathological features that often lead to a reduction in patients' survival. The presentation varies depending on the category of myeloid neoplasm and its prognostic significance. The literature has specifically focused on the features of acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), and chronic myelomonocytic leukemia (CMML). In this article, we aimed to uncover the peculiarities of clonal skin proliferations in the course of Ph-negative myeloproliferative neoplasms (MPNs). We conducted a systematic review and statistical analysis of the literature data. MPN patients mainly exhibited cutaneous extramedullary hematopoiesis, while a minority displayed cutaneous histiocytic lesions. Furthermore, these patients showed lower survival rates compared to the median survival of MPN patients, especially when calculating survival from the appearance of cutaneous lesions. Our work highlights, for the first time, the prognostic relevance and histological heterogeneity of cutaneous lesions in MPN. Moreover, it emphasizes the importance of dermatological and histological examinations when cutaneous lesions are present.
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Affiliation(s)
- Arturo Bonometti
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Pathology, IRCCS Humanitas Clinical and Research Hospital, Milan, Italy
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4
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Li Y, Yin H, Zhang L, Lu L. Janus kinase inhibitor for multicentric reticulohistiocytosis, a new potential treatment. Int J Rheum Dis 2023; 26:1656-1659. [PMID: 37664958 DOI: 10.1111/1756-185x.14793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/04/2023] [Accepted: 06/08/2023] [Indexed: 09/05/2023]
Affiliation(s)
- Yuan Li
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hanlin Yin
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Le Zhang
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Pharmacy, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liangjing Lu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Grand DG, Barton DT, Yan S, Sriharan A, Momtahen S, Cloutier JM, LeBlanc RE. Histiocytoid melanoma: Diagnostic pitfall and mimicker of non-Langerhans cell histiocytoses including reticulohistiocytoma. J Cutan Pathol 2023; 50:647-652. [PMID: 37069790 DOI: 10.1111/cup.14434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/08/2023] [Accepted: 03/22/2023] [Indexed: 04/19/2023]
Abstract
Melanoma and benign histiocytic proliferations can sometimes show considerable clinical and histopathologic overlap. Recently, cases of melanomas resembling xanthogranuloma and Rosai-Dorfman disease have been reported, and herein we report a case of melanoma closely mimicking reticulohistiocytoma. An 84-year-old man presented with a 1 cm purple-red nodule on his arm concerning for squamous cell carcinoma. While the biopsy findings resembled reticulohistiocytoma, the clinical context and regression changes at the lesion perimeter raised stronger concern for melanoma, which was confirmed with immunohistochemistry. We review prior rare reports of melanomas resembling non-Langerhans cell histiocytic proliferations and summarize helpful clinical and histopathologic clues to avoid a diagnostic pitfall when confronted with this unusual quandary.
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Affiliation(s)
- David G Grand
- Department of Dermatology, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Dorothea T Barton
- Department of Dermatology, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Shaofeng Yan
- Department of Pathology and Laboratory Medicine, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Aravindhan Sriharan
- Department of Pathology and Laboratory Medicine, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Shabnam Momtahen
- Department of Pathology and Laboratory Medicine, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Jeffrey M Cloutier
- Department of Pathology and Laboratory Medicine, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Robert E LeBlanc
- Department of Pathology and Laboratory Medicine, Geisel School of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
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Mariotti EB, Corrà A, Lemmi E, Laschi L, Aimo C, Quintarelli L, Volpi W, Nacci F, Verdelli A, Ruffo di Calabria V, Guiducci S, Caproni M. Multicentric Reticulohistiocytosis Associated with an Early Form of Systemic Lupus Erythematosus: A Case Report of a Rare Disease, with Mini Review of the Literature. J Clin Med 2022; 11:6529. [PMID: 36362761 PMCID: PMC9658768 DOI: 10.3390/jcm11216529] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/16/2022] [Accepted: 11/01/2022] [Indexed: 08/10/2023] Open
Abstract
Multicentric reticulohistiocytosis (MRH) is the most frequently described form of reticulohistiocytosis (RH), and it is classified as a class IIb non-Langerhans cell histiocytosis. It has been designated as multicentric, being characterized by multisystemic involvement. In fact, although mainly involving the skin, along with the joints, it is a systemic inflammatory condition potentially involving every internal organ. As MRH-related skin findings can mimic rheumatoid nodules or Gottron papules, the histopathology of the cutaneous lesions is often necessary for the correct diagnosis. Approximately one-third of MRH patients have confirmed concomitant autoimmune disorders. A wide variety of autoimmune disorders associated with the disease have been reported in the literature, suggesting immune dysfunction as a factor in the pathophysiology of MRH. A case of MRH associated with autoimmune manifestation is reported in the context of a mini review of the literature, with a focus on clinical presentation, treatments, and treatment outcomes. Moreover, eight cases of MRH associated with autoimmune diseases are briefly discussed.
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Affiliation(s)
| | - Alberto Corrà
- Section of Dermatology, Department of Health Sciences, University of Florence, 50125 Florence, Italy
| | - Elisa Lemmi
- Section of Anatomical Pathology, Department of Health Sciences, University of Florence, 50125 Florence, Italy
| | - Lucrezia Laschi
- Section of Anatomical Pathology, Department of Health Sciences, University of Florence, 50125 Florence, Italy
| | - Cristina Aimo
- Section of Dermatology, Department of Health Sciences, University of Florence, 50125 Florence, Italy
| | - Lavinia Quintarelli
- Rare Disease Skin Unit, Section of Dermatology, Azienda USL Toscana Centro, University of Florence, 50125 Florence, Italy
| | - Walter Volpi
- Section of Dermatology, Azienda USL Toscana Centro, 50125 Florence, Italy
| | - Francesca Nacci
- Section of Rheumatology, Department of Clinical and Experimental Medicine, University of Florence, 50125 Florence, Italy
| | - Alice Verdelli
- Section of Dermatology, Azienda USL Toscana Centro, 50125 Florence, Italy
| | | | - Serena Guiducci
- Section of Rheumatology, Department of Clinical and Experimental Medicine, University of Florence, 50125 Florence, Italy
| | - Marzia Caproni
- Rare Disease Skin Unit, Section of Dermatology, Azienda USL Toscana Centro, University of Florence, 50125 Florence, Italy
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Rech KL, He R. Challenges in the Histopathologic Diagnosis of Histiocytic Neoplasms. J Natl Compr Canc Netw 2021; 19:1305-1311. [PMID: 34781270 DOI: 10.6004/jnccn.2021.7098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022]
Abstract
Histiocytic neoplasms, including Langerhans cell histiocytosis (LCH), Erdheim-Chester disease (ECD), and Rosai-Dorfman disease (RDD), present a diagnostic challenge due to nonspecific fibroinflammatory infiltrates and a diverse clinical presentation. The pathologist can play a key role in classification of these disorders through multidisciplinary collaboration and correlation of pathologic features with clinical and radiologic findings. The histopathologic differential diagnosis is broad, requiring knowledge of the possible diagnoses at each specific anatomic site, and a careful assessment to exclude other inflammatory and neoplastic disorders. An immunohistochemistry panel including CD163, CD1a, langerin, S100, Factor XIIIa, OCT2, and BRAF V600E can provide definitive diagnosis in LCH and RDD, whereas ECD requires classic clinical features as well as confirmation of an activating MAPK pathway mutation by genetic studies.
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Affiliation(s)
- Karen L Rech
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Rong He
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
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Park JW, Shin SH, Hong SA, Park KY. Asymptomatic solitary nodule on the thigh in a 6-year-old patient. Int J Dermatol 2021; 61:e186-e187. [PMID: 34473862 DOI: 10.1111/ijd.15883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/01/2021] [Accepted: 08/11/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Jae Wan Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Soon Auck Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Dietz M, Debarbieux S, Righetti M, Harou O, Tordo J. Paraneoplastic Multicentric Reticulohistiocytosis on 18F-FDG PET/CT Breast Carcinoma Follow-up. Clin Nucl Med 2021; 46:e253-e255. [PMID: 33323726 DOI: 10.1097/rlu.0000000000003417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
ABSTRACT We report the case of a 60-year-old woman who underwent 18F-FDG PET/CT to evaluate a metastatic breast carcinoma. Follow-up 18F-FDG PET/CT showed progressive disease with 18F-FDG increased in primary tumor, axillary lymph nodes, and pleural and bone diffuse metastases but also a concomitant uptake in multiples joints. The anatomopathological analysis from skin biopsy revealed a multicentric reticulohistiocytosis, considered paraneoplastic in the context. Second follow-up PET/CT after treatment showed a decrease of 18F-FDG uptake in previously affected joints, consistent with the symptoms evolution. 18F-FDG PET/CT could be helpful in the detection and the evaluation of such rare systemic disorder.
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Affiliation(s)
| | | | | | - Olivier Harou
- Service d'Anatomie et de Cytologie Pathologiques, Hôpital Lyon Sud, Hospices Civils de Lyon, Pierre Bénite, France
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Bonometti A, Gliozzo J, Moltrasio C, Bagnoli F, Berti E. Cutaneous-group histiocytoses associated with myeloid malignancies: A systematic review of 102 cases. Australas J Dermatol 2020; 62:e162-e169. [PMID: 33125722 DOI: 10.1111/ajd.13491] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND Histiocytoses are haematological disorders of bone marrow origin that share many biological and clinical features with haematological neoplasms. The association between histiocytoses of the cutaneous-group and myeloid malignancies is a poorly investigated topic of high biological and clinical impact. METHODS We performed a systematic review of the scientific literature, compliant with PRISMA guidelines, to unravel the clinical and pathological features of this intriguing association. FINDINGS We gathered and analysed 102 patients. Most were children with generalised cutaneous eruptions and displayed risk organ involvement (i.e. bone marrow, spleen, liver). Interestingly, all these features are uncommonly encountered in C-group histiocytosis not associated with haematological neoplasms. CONCLUSIONS Our review shows that generalised eruptions and risk organ involvement in cutaneous-group histiocytosis should raise a suspicion for a concomitant myeloid neoplasm both in children and in adults and warrant further investigations. A rapid recognition of this association is required to start a prompt and effective therapeutic management given the aggressive behaviour of the associated myeloid neoplasm in most instances.
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Affiliation(s)
- Arturo Bonometti
- Unit of Anatomic Pathology, Department of Molecular Medicine, IRCCS San Matteo Foundation, University of Pavia, Pavia, Italy
| | - Jessica Gliozzo
- Department of Dermatology, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Unit of Neuroradiology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Chiara Moltrasio
- Department of Dermatology, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Filippo Bagnoli
- Department of Oncology and Hematology, University of Milan, Milan, Italy
| | - Emilio Berti
- Department of Dermatology, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Organ Transplantation, University of Milan, Milan, Italy
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Bonometti A. The triptych of mixed histiocytosis: a systematic review of 105 cases and proposed clinical classification. Leuk Lymphoma 2020; 62:32-44. [PMID: 32969291 DOI: 10.1080/10428194.2020.1824070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Histiocytoses are one of the ultimate diagnostic challenges that every physician face at least once in his/her life. Giving their protean manifestation and differentiated therapeutic needs, histiocytosis requires extensive characterization and multidisciplinary management. Mixed histiocytosis is an emerging group of syndromes defined by the overlap of Langerhans cell histiocytosis and another histiocytic disorder of different type. Despite rare, it may account for up to a fifth of systemic histiocytosis patients in some series. In this work, we comprehensively review for the first time the clinical, radiological, histopathological and molecular features of mixed histiocytosis in children and adults. Moreover, we propose a clinical classification in three groups that differentiate patients with systemic involvement and worse overall survival to other groups with more localized manifestations and indolent behavior, wanting to ease their recognition and treatment. Interestingly we also found that mixed histiocytosis harbor BRAFV600E mutations with a higher frequency comparing to all other histiocytoses, and may therefore benefit of specific inhibitory drugs.
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Affiliation(s)
- Arturo Bonometti
- Unit of Anatomic Pathology, Department of Molecular Medicine, IRCCS San Matteo Foundation, University of Pavia, Pavia, Italy
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Multicentric Reticulohistiocytosis Exhibiting Positive HLA-B*07 and HLA-B*08: A Case Report. ACTA ACUST UNITED AC 2020; 56:medicina56090456. [PMID: 32911791 PMCID: PMC7560105 DOI: 10.3390/medicina56090456] [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: 08/17/2020] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 11/26/2022]
Abstract
Multicentric reticulohistiocytosis (MRH) is a rare cause of destructive inflammatory arthritis involving both small, as well as larger joints. We report the case of a 40-year-old Caucasian female with a family history of neoplasia who was referred to our service witha two-month history of inflammatory joint pain. On examination, the patient had inflammatory arthritis, mainly involving the peripheral joints, sacroiliac joint pain, and numerous papulonodular mucocutaneous lesions, including periungual “coral beads”. Imaging tests revealed erosive arthritis with synovitis and tenosynovitis, sacroiliac joint changes, as well as papulonodular mucosal lesions in the nasal vestibule, the oropharyngeal mucosa, and supraglottic larynx. She tested positive for HLA-B*07 (Human Leukocyte Antigen B*07) and HLA-B*08, ANA (antinuclear antibodies), RF (rheumatoid factor), anti-Ro52, anti-SSA/Ro, and anti-SSB/La antibodies. The skin biopsy was suggestive of MRH, showing a histiocyte infiltrate and frequent giant multinucleated cells. The patient exhibited favorable outcomes under Methotrexate, then Leflunomide. However, she displayed worsening clinical symptoms while under Azathioprine. To our knowledge, this is the first case of MRH to exhibit positive HLA-B*07 together with HLA-B*08. The rarity of MRH, its unknown etiology and polymorphic clinical presentation, as well as its potential neoplastic/paraneoplastic, and autoimmune nature demand extensive investigation.
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