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Hirota K, Zeng F, Inoue Inukai J, Nogami M, Murakami T. 18FDG PET/MRI in Histiocytic Sarcoma of the Spinal Canal. Clin Nucl Med 2025:00003072-990000000-01740. [PMID: 40392149 DOI: 10.1097/rlu.0000000000005991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2025] [Accepted: 04/22/2025] [Indexed: 05/22/2025]
Abstract
Histiocytic sarcoma is a malignant neoplasm of mature histiocytes that rarely involves the central nervous system. A 49-year-old man presenting with a mass filling the lumbar spinal canal underwent 18F-FDG PET/MRI. Fused PET/MRI images showed intense FDG uptake in the mass, as well as uptake in the cerebellopontine angle and cervical lymph nodes. Biopsy of the spinal lesion showed histiocytic sarcoma. This is the rare case report of PET/MRI performed for histiocytic sarcoma demonstrating changes in FDG uptake during chemotherapy. This case highlights the utility of PET imaging for evaluating the extent of lesions and treatment efficacy for histiocytic sarcoma.
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Affiliation(s)
- Kohei Hirota
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Feibi Zeng
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Junko Inoue Inukai
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Munenobu Nogami
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
- Division of Medical Imaging, Biomedical Imaging Research Center, University of Fukui, Fukui, Japan
| | - Takamichi Murakami
- Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
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Gan M, He X, Zheng X. FDG PET/CT Imaging of Liver and Spleen Histiocytic Sarcoma. Clin Nucl Med 2024; 49:272-273. [PMID: 38306379 DOI: 10.1097/rlu.0000000000005043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
ABSTRACT Histiocytic sarcoma is a tumor of the lymphohematopoietic system characterized by macrophage morphology and immunophenotype. Here, we report FDG PET/CT images of a 50-year-old man with coexisting histiocytic sarcoma of the liver and spleen. Images showed multiple enhanced uptake lesions of FDG in both the liver and spleen. Ultimately, histiocytic sarcoma was confirmed by the biopsy histopathology.
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Affiliation(s)
| | - Xiaoxiao He
- Nuclear Medicine, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
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Harwood M, Craig FE, Yang M. Rare Multisystem Histiocytic Sarcoma on 18F-FDG PET/CT. J Nucl Med Technol 2021; 49:358-359. [PMID: 34330800 DOI: 10.2967/jnmt.121.262247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/15/2021] [Indexed: 11/16/2022] Open
Abstract
Histiocytic sarcoma (HS) is a rare malignancy with morphologic and immunophenotypic features indicating histiocytic differentiation. We present a case of HS with multisystem involvement, including an obstructing mass in the pancreatic head. 18F-FDG PET/CT is a valuable tool in staging this rare entity and in assessing the response to therapy. Knowing the diverse metastatic pattern of HS will help avoid imaging pitfalls on clinical 18F-FDG PET/CT scans.
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Affiliation(s)
- Matthew Harwood
- Department of Radiology, Mayo Clinic Arizona, Scottsdale, Arizona; and
| | - Fiona E Craig
- Laboratory of Medicine and Pathology, Mayo Clinic Arizona, Scottsdale, Arizona
| | - Ming Yang
- Department of Radiology, Mayo Clinic Arizona, Scottsdale, Arizona; and
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4
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Silsby M, Varikatt W, Vucic S, Menon P. New onset headache caused by histiocytic sarcoma of the spinal cord and leptomeninges: a case report. BMJ Neurol Open 2021; 3:e000147. [PMID: 34189464 PMCID: PMC8204169 DOI: 10.1136/bmjno-2021-000147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2021] [Indexed: 12/02/2022] Open
Abstract
Background Headache due to raised intracranial pressure is rarely caused by spinal lesions. We describe a patient with primary histiocytic sarcoma who presented with a new onset headache with features of raised intracranial pressure and subtle signs of cauda equina syndrome due to predominant lower spinal cord infiltration and minimal intracranial involvement. Case A previously well 54-year-old man presented with a 2-month history of new onset headache with features of raised intracranial pressure. Progression of lower limb weakness was delayed and mild with diagnostic delay resulting from the primary presentation with headache leading to an initial focus on cerebral pathology. Subsequent investigations revealed a previously unreported presentation of primary histiocytic sarcoma infiltrating the cauda equina causing raised intracranial pressure headache. Conclusion This case highlights the importance of a broad search in the investigation of new onset raised intracranial pressure headache, including imaging of the lower spinal cord. Primary histiocytic sarcoma should be considered in the differential diagnosis of this rare syndrome.
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Affiliation(s)
- Matthew Silsby
- Neurology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Winny Varikatt
- Anatomical Pathology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Steve Vucic
- Neurology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Parvathi Menon
- Neurology, Westmead Hospital, Westmead, New South Wales, Australia
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Huynh KN, Nguyen BD. Histiocytosis and Neoplasms of Macrophage-Dendritic Cell Lineages: Multimodality Imaging with Emphasis on PET/CT. Radiographics 2021; 41:576-594. [PMID: 33606566 DOI: 10.1148/rg.2021200096] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Histiocytosis is a rare inflammatory process characterized by pathologic infiltration and accumulation of cells derived from the monocytic lineage in normal tissue. It encompasses more than 100 different subtypes of disorders that were recently classified into five main groups: (a) Langerhans-related histiocytosis, (b) Rosai-Dorfman histiocytosis, (c) cutaneous and mucocutaneous histiocytosis, (d) malignant histiocytosis, and (e) hemophagocytic lymphohistiocytosis and macrophage activation syndrome. Langerhans cell histiocytosis is the most common histiocytic disorder. Less common types include Erdheim-Chester disease, Rosai-Dorfman disease, adult and juvenile xanthogranuloma, necrobiotic xanthogranuloma, histiocytic sarcoma, interdigitating dendritic cell sarcoma, Langerhans cell sarcoma, and hemophagocytic lymphohistiocytosis. Although the pathogenesis of these disorders may be attributable to mutations in the oncogenic driver, recent discoveries have shown that inflammation and fibrosis secondary to mutated histiocytes, rather than a proliferative cell mechanism, result in manifestation of the disease. Diagnosis, which relies on a multidisciplinary approach, is challenging and often delayed because clinical findings are nonspecific and may mimic malignant processes at radiologic evaluation. Compared with conventional imaging, PET/CT allows detection of the increased metabolic activity in histiocytes. Diagnostic algorithms for histiocytic disorders should include functional imaging with fluorine 18 (18F) fluorodeoxyglucose (FDG) PET/CT, which provides a comprehensive whole-body evaluation of their potential involvement with multiple organ systems and allows monitoring of therapeutic response. The most recent revised classification, pathophysiologic and clinical manifestations, sites of involvement, and imaging features of histiocytosis are described in this review and a multimodality approach is used, with emphasis on 18F-FDG PET/CT evaluation. ©RSNA, 2021.
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Affiliation(s)
- Kenneth N Huynh
- From the Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259
| | - Ba D Nguyen
- From the Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259
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Ong AC, Huh EH, Moreland AJ, Rooper LM, Aygun N, Akst LM, Best SR, Khan MA. Nonepithelial Tumors of the Larynx: Single-Institution 13-Year Review with Radiologic-Pathologic Correlation. Radiographics 2020; 40:2011-2028. [PMID: 33035134 DOI: 10.1148/rg.2020190210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nonepithelial tumors of the larynx are rare and represent a minority of all laryngeal neoplasms. Imaging has an important role in the diagnosis, treatment planning, and surveillance of these entities. However, unfamiliarity with these neoplasms can cause diagnostic difficulties for radiologists, especially because many of the imaging findings are nonspecific. By using a systematic approach based on clinical history, patient age and gender, lesion location, endoscopic results, and specific imaging findings, the differential diagnosis can often be narrowed. These tumors typically affect the submucosal layer, so if a tumor has an intact mucosa at endoscopy, a nonepithelial neoplasm is the most likely diagnosis. Nonepithelial tumors of the larynx can arise from the laryngeal cartilage or muscle or from the surrounding lymphoid tissue or blood vessels. Consequently, imaging findings typically correspond to the specific cell type from which it originated. Recognizing specific features (eg, metaplastic bone formation, macroscopic fat, or enhancement pattern) can often help narrow the differential diagnosis. In addition, identification of noncircumscribed borders of the lesion and invasion of the adjacent structures is key to diagnosis of a malignant process rather than a benign neoplasm. Understanding the pathologic correlation is fundamental to understanding the radiologic manifestations and is ultimately crucial for differentiation of nonepithelial laryngeal neoplasms. Online supplemental material is available for this article. ©RSNA, 2020.
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Affiliation(s)
- Andrew C Ong
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Eric H Huh
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Anna J Moreland
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Lisa M Rooper
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Nafi Aygun
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Lee M Akst
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Simon R Best
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
| | - Majid A Khan
- From the Russell H. Morgan Department of Radiology and Radiological Science (A.C.O., E.H.H., A.J.M., N.A., M.A.K.), Department of Pathology (L.M.R.), and Department of Otolaryngology-Head and Neck Surgery (L.M.A., S.R.B.), Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore. MD 21287
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Erich SA, Constantino-Casas F, Dobson JM, Teske E. Morphological Distinction of Histiocytic Sarcoma from Other Tumor Types in Bernese Mountain Dogs and Flatcoated Retrievers. ACTA ACUST UNITED AC 2018; 32:7-17. [PMID: 29275293 DOI: 10.21873/invivo.11198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/10/2017] [Accepted: 10/13/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM Histiocytic sarcoma (HS) represents a group of malignant canine tumors to which Bernese Mountain Dogs (BMD) and Flatcoated Retrievers (FCR) are predisposed. The differential diagnosis for HS is broad, encompassing round cell tumors, sarcomas and other histiocytic diseases. The aim of this study was to establish morphological and immunohistochemical criteria for routine use on formalin-fixed, paraffin-embedded samples and cytological smears for the recognition and differentiation of canine HS and its subtypes. MATERIALS AND METHODS Retrospectively, tumor sections were reviewed from 449 BMD and 380 FCR with confirmed or suspected HS, other histiocytic conditions, or a disease of the differential diagnosis of HS. RESULTS In a large proportion of cases, 47.5% for histology and for 46.3% cytology, the initial diagnosis was changed after the revision process. A large variation in morphological features of HS was observed in this study, making the existence of several subtypes in dogs also very likely. Furthermore, the different percentage of morphological features between BMD and FCR indicates the different mixture of cell type origins resulting possibly from genetic or environmental differences at the onset of HS in those breeds. CONCLUSION This study stresses the value of a strictly applied and standardized scoring system for microscopic evaluation of tumor sections and smears, and the implementation of review and revision of pathological diagnoses.
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Affiliation(s)
- Suzanne A Erich
- Department of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | | | - Jane M Dobson
- Department of Veterinary Medicine, University of Cambridge, Cambridge, U.K
| | - Erik Teske
- Department of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
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Simultaneous Brain and Lung Histiocytic Sarcoma Revealed on 18F-FDG PET/CT. Clin Nucl Med 2018; 43:65-67. [DOI: 10.1097/rlu.0000000000001908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Abstract
Histiocytic sarcoma is an extremely rare and aggressive malignant neoplasm of presumed hematopoietic origin. Lymph nodes are the most common sites of involvement. A variety of extranodal sites can be involved, particularly the gastrointestinal tract, soft tissue, skin, and spleen. Radiologic findings of histiocytic sarcoma have been rarely reported. We present a case with histiocytic sarcoma in pericardium, which is an unusual site. Enhanced chest CT showed remarkable enhancement of the tumor. On FDG PET/CT, the tumor showed intense FDG uptake.
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Seiler SMF, Baumgartner C, Hirschberger J, Beer AJ, Brühschwein A, Kreutzmann N, Laberke S, Wergin MC, Meyer-Lindenberg A, Brandl J, von Thaden AK, Farrell E, Schwaiger M. Comparative Oncology: Evaluation of 2-Deoxy-2-[18F]fluoro-D-glucose (FDG) Positron Emission Tomography/Computed Tomography (PET/CT) for the Staging of Dogs with Malignant Tumors. PLoS One 2015; 10:e0127800. [PMID: 26068641 PMCID: PMC4466332 DOI: 10.1371/journal.pone.0127800] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 04/20/2015] [Indexed: 11/19/2022] Open
Abstract
Introduction 2-Deoxy-2-[18F]fluoro-D-glucose PET/CT is a well-established imaging method for staging, restaging and therapy-control in human medicine. In veterinary medicine, this imaging method could prove to be an attractive and innovative alternative to conventional imaging in order to improve staging and restaging. The aim of this study was both to evaluate the effectiveness of this image-guided method in canine patients with spontaneously occurring cancer as well as to illustrate the dog as a well-suited animal model for comparative oncology. Methods Ten dogs with various malignant tumors were included in the study and underwent a whole body FDG PET/CT. One patient has a second PET-CT 5 months after the first study. Patients were diagnosed with histiocytic sarcoma (n = 1), malignant lymphoma (n = 2), mammary carcinoma (n = 4), sertoli cell tumor (n = 1), gastrointestinal stromal tumor (GIST) (n = 1) and lung tumor (n = 1). PET/CT data were analyzed with the help of a 5-point scale in consideration of the patients’ medical histories. Results In seven of the ten dogs, the treatment protocol and prognosis were significantly changed due to the results of FDG PET/CT. In the patients with lymphoma (n = 2) tumor extent could be defined on PET/CT because of increased FDG uptake in multiple lymph nodes. This led to the recommendation for a therapeutic polychemotherapy as a treatment. In one of the dogs with mammary carcinoma (n = 4) and in the patient with the lung tumor (n = 1), surgery was cancelled due to the discovery of multiple metastasis. Consequently no treatment was recommended. Conclusion FDG PET/CT offers additional information in canine patients with malignant disease with a potential improvement of staging and restaging. The encouraging data of this clinical study highlights the possibility to further improve innovative diagnostic and staging methods with regard to comparative oncology. In the future, performing PET/CT not only for staging but also in therapy control could offer a significant improvement in the management of dogs with malignant tumors.
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Affiliation(s)
- Stefanie M F Seiler
- Clinic of Small Animal Medicine, Center for Clinical Veterinary Medicine, Ludwig, Maximilians Universität, 80539, Munich, Germany; Center of Preclinical Research, Technische Universität München, 81675, Munich, Germany
| | - Christine Baumgartner
- Center of Preclinical Research, Technische Universität München, 81675, Munich, Germany
| | - Johannes Hirschberger
- Clinic of Small Animal Medicine, Center for Clinical Veterinary Medicine, Ludwig, Maximilians Universität, 80539, Munich, Germany
| | - Ambros J Beer
- Department of Nuclear Medicine, Technische Universität München, 81675, Munich, Germany
| | - Andreas Brühschwein
- Clinic for Small Animal Surgery and Reproduction, Veterinary Faculty, Ludwig, Maximilians Universität, 80539, Munich, Germany
| | - Nina Kreutzmann
- Clinic of Small Animal Medicine, Center for Clinical Veterinary Medicine, Ludwig, Maximilians Universität, 80539, Munich, Germany
| | - Silja Laberke
- Clinic of Small Animal Medicine, Center for Clinical Veterinary Medicine, Ludwig, Maximilians Universität, 80539, Munich, Germany
| | - Melanie C Wergin
- Clinic of Small Animal Medicine, Center for Clinical Veterinary Medicine, Ludwig, Maximilians Universität, 80539, Munich, Germany
| | - Andrea Meyer-Lindenberg
- Clinic for Small Animal Surgery and Reproduction, Veterinary Faculty, Ludwig, Maximilians Universität, 80539, Munich, Germany
| | - Johanna Brandl
- Center of Preclinical Research, Technische Universität München, 81675, Munich, Germany
| | | | - Eliane Farrell
- Department of Nuclear Medicine, Technische Universität München, 81675, Munich, Germany
| | - Markus Schwaiger
- Department of Nuclear Medicine, Technische Universität München, 81675, Munich, Germany
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Shen XZ, Liu F, Ni RJ, Wang BY. Primary histiocytic sarcoma of the stomach: A case report with imaging findings. World J Gastroenterol 2013; 19:422-425. [PMID: 23372369 PMCID: PMC3554831 DOI: 10.3748/wjg.v19.i3.422] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 09/29/2012] [Accepted: 12/17/2012] [Indexed: 02/06/2023] Open
Abstract
Histiocytic sarcoma (HS) is a rare malignant neoplasm that originates from a histiocytic hematopoietic lineage characterized by histiocytic differentiation and its corresponding immunophenotypic features. We herein reported a case of primary HS of the stomach which was confirmed through histopathologic examination and immunohistochemical staining. A 52-year-old woman presented with progressive difficulty in feeding and dull pain in the epigastric region. Gastroscopy, endoscopic ultrasonography, double contrast examination, and computed tomography revealed a mass located on the posterior wall of fundus and lesser curvature of the stomach. Microscopically, the cytoplasm of the tumor cells was abundant and eosinophilic. Immunohistochemical staining revealed that the tumor cells were positive for CD45RO and CD68. It is difficult to differentiate HS of stomach from other gastric malignancies by radiological evaluation alone. However, HS may be considered when a protruding and ulcerated mass in stomach shows heterogeneous hypervascular features. To the best of our knowledge, this is the first report in English language literature that emphasizes the imaging findings of human gastric HS.
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Saboo SS, Krajewski KM, Shinagare AB, Jagannathan JP, Hornick JL, Ramaiya N. Imaging features of primary extranodal histiocytic sarcoma: report of two cases and a review of the literature. Cancer Imaging 2012; 12:253-8. [PMID: 22935131 PMCID: PMC3458784 DOI: 10.1102/1470-7330.2012.0029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Histiocytic sarcoma is an extremely rare and aggressive malignancy of bone marrow origin that occurs in lymph nodes, skin, and the gastrointestinal tract. We report on the imaging features of two cases of primary histiocytic sarcoma, one in the retroperitoneum causing a tumor-bowel fistula and another with primary bone involvement.
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Makis W, Rakheja R, Lavoie J, Hickeson M. Myeloid Sarcoma and Acute Myelomonocytic Leukemia in an Adolescent with Tetrasomy 8: Staging with (18)F-FDG PET/CT. Nucl Med Mol Imaging 2012; 46:119-24. [PMID: 24900045 DOI: 10.1007/s13139-012-0128-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 12/28/2011] [Accepted: 01/17/2012] [Indexed: 12/27/2022] Open
Abstract
Tetrasomy 8 is a relatively rare chromosomal abnormality that has been reported in only 33 cases in hematologic disorders. It is known for its association with aggressive acute myeloid leukemia (AML) and myeloid sarcoma and is considered a very poor prognostic factor. Myeloid sarcoma is a rare hematologic malignancy characterized by tumor masses consisting of immature myeloid cells, presenting at an extramedullary site. We present a case of a 17-year-old boy referred for an (18)F-FDG PET/CT for the evaluation of pleural masses and spinal bone lesions seen on CT, after presenting with a 4 month history of chest pain. The PET/CT revealed extensive FDG-avid extramedullary disease in the soft tissues of the chest, abdomen, and pelvis, which were biopsy-proven to be myeloid sarcoma, as well as extensive intramedullary disease biopsy proven to be AML. This is the first report of the use of (18)F-FDG PET/CT to stage a subset of aggressive AML and myeloid sarcoma in a patient with an associated chromosomal abnormality (tetrasomy 8).
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Affiliation(s)
- William Makis
- Department of Nuclear Medicine, Brandon Regional Health Centre, 150 McTavish Ave E, Brandon, MB R7A 2B3 Canada
| | - Rajan Rakheja
- Department of Nuclear Medicine, Royal Victoria Hospital, McGill University Health Centre, 687 Pine Ave West, M2, Montreal, QC H3A 1A1 Canada
| | - Josee Lavoie
- Department of Pathology, Montreal Children's Hospital, McGill University Health Centre, 2300 Tupper St, Montreal, QC H3H 1P3 Canada
| | - Marc Hickeson
- Department of Nuclear Medicine, Royal Victoria Hospital, McGill University Health Centre, 687 Pine Ave West, M2, Montreal, QC H3A 1A1 Canada
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