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M S A, K C, Bhargavan RV, Somanathan T, Subhadradevi L. An overview on liposarcoma subtypes: Genetic alterations and recent advances in therapeutic strategies. J Mol Histol 2024; 55:227-240. [PMID: 38696048 DOI: 10.1007/s10735-024-10195-4] [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: 07/24/2023] [Accepted: 04/18/2024] [Indexed: 05/21/2024]
Abstract
Liposarcoma (LPS) is a rare malignancy of adipocytic differentiation. According to World Health Organization classification, LPS comprises of four principle subtypes Atypical lipomatous tumor/Well-differentiated liposarcoma (ATL/WDLPS), Dedifferentiated liposarcoma (WDLPS), Myxoid liposarcoma (MLPS), and Pleomorphic liposarcoma (PLPS). Each subtype can develop at any location and shows distinct clinical behavior and treatment sensitivity. ATL/ WDLPS subtype has a higher incidence rate, low recurrence, and is insensitive to radiation and chemotherapy. DDLPS is the focal progression of WDLPS, which is aggressive and highly metastasizing. MLPS is sensitive to radiation and chemotherapy, with a higher recurrence rate and metastasis. PLPS subtype is highly metastasizing, has a poor prognosis, and exhibiting higher recurrence rate. Initial histological analysis provides information for the characterization of LPS subtypes', further molecular and genetic analysis provides certain subtype specifications, such as gene amplifications and gene fusions. Such molecular genetic alterations will be useful as therapeutic targets in various cancers, including the LPS subtypes. A wide range of novel therapeutic agents based on genetic alterations that aim to target LPS subtypes specifically are under investigation. This review summarizes the LPS subtype classification, their molecular genetic characteristics, and the implications of genetic alterations in therapeutics.
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Affiliation(s)
- Anju M S
- Division of Cancer Research, Regional Cancer Centre (Research Centre, University of Kerala), Thiruvananthapuram, Kerala, 695011, India
| | - Chandramohan K
- Division of Surgical Oncology, Regional Cancer Centre (Research Centre, University of Kerala), Thiruvananthapuram, Kerala, 695011, India
| | - Rexeena V Bhargavan
- Division of Surgical Oncology, Regional Cancer Centre (Research Centre, University of Kerala), Thiruvananthapuram, Kerala, 695011, India
| | - Thara Somanathan
- Division of Pathology, Regional Cancer Centre (Research Centre, University of Kerala), Thiruvananthapuram, Kerala, 695011, India
| | - Lakshmi Subhadradevi
- Division of Cancer Research, Regional Cancer Centre (Research Centre, University of Kerala), Thiruvananthapuram, Kerala, 695011, India.
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Waters JP, Horenstein S, Egger A, Johnsen P, Kim TW. Parosteal lipoma of the left femur: A case report. Clin Case Rep 2024; 12:e8744. [PMID: 38654936 PMCID: PMC11035377 DOI: 10.1002/ccr3.8744] [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: 10/30/2023] [Accepted: 03/24/2024] [Indexed: 04/26/2024] Open
Abstract
Multidisciplinary team collaboration in the diagnosis of rare tumors such as parosteal lipoma is highly important, especially when suspicious of malignancy. The use of radiological and physical examinations is imperative to monitor recurrence and quality of life.
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Affiliation(s)
- James P. Waters
- Cooper Medical School of Rowan UniversityCamdenNew JerseyUSA
| | | | - Austin Egger
- Philadelphia College of Osteopathic MedicinePhiladelphiaPennsylvaniaUSA
| | | | - Tae Won Kim
- Cooper University HealthcareCamdenNew JerseyUSA
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3
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AbuMoussa S, Roshan MP, Souza FF, Daley D, Rosenberg A, Pretell J, Fullerton N, Subhawong T. Soft Tissue Masses of the Hand: A Review of Clinical Presentation and Imaging Features. Curr Oncol 2023; 30:2032-2048. [PMID: 36826119 PMCID: PMC9955517 DOI: 10.3390/curroncol30020158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/11/2023] [Accepted: 01/14/2023] [Indexed: 02/11/2023] Open
Abstract
More than 15% of all soft-tissue tumors arise in the hand. Because of the location of these tumors, even small abnormalities may be alarming to patients on presentation. Although the majority of lesions are benign and can be diagnosed solely by history and physical examination, additional imaging workup may be required to confirm a diagnosis or define anatomic extent of involvement. This paper aims to review the basic epidemiology, clinical presentation, imaging findings, and treatment options of the more common soft-tissue tumors of the hand.
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Affiliation(s)
- Samuel AbuMoussa
- Department of Radiology, Loma Linda University Medical Center, Loma Linda, CA 92354, USA
| | - Mona Pari Roshan
- Herbert Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA
| | - Felipe Ferreira Souza
- Department of Radiology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Dane Daley
- Department of Orthopaedic Surgery, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Andrew Rosenberg
- Department of Pathology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Juan Pretell
- Department of Orthopaedic Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Natalia Fullerton
- Department of Orthopaedic Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Ty Subhawong
- Department of Radiology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Correspondence: ; Tel.: +1-(305)-585-7500
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Atypical Sites of the Lipoma on the Hand and Fingers: Clinical and Imaging Features and Surgical Outcomes. Diagnostics (Basel) 2022; 12:diagnostics12102286. [PMID: 36291975 PMCID: PMC9600489 DOI: 10.3390/diagnostics12102286] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 12/03/2022] Open
Abstract
Background: Lipomas are the most frequent benign soft tissue tumor that are rarely found in the hand and are exceptionally rare on the fingers. The aim of this study was to investigate lipomas of atypical locations, so that they can be taken into account when making a differential diagnosis of a tumor of the hand or fingers. Methods: We studied a group of 27 patients diagnosed with lipoma of the wrist, palm, and fingers. The diagnosis was made by clinical and imaging examinations. Surgical treatment was established based on symptoms of pain, paresthesias, functional impairment, or aesthetic concerns. Treatment outcomes were assessed clinically at 1.5 years post-intervention. Results: Sizes over 5 cm were recorded in five cases, with the largest lipoma being 8 by 5 by 3.5 cm in size and weighing 125 g, located in the palm. There was one case of spontaneous tendon rupture and one case of carpal tunnel syndrome. There was no recurrence recorded at 1.5-year follow-up. Conclusions: Lipomas in the palm and fingers are rare entities (with more men affected), and surgical treatment consists of complete removal of the tumor and providing definitive healing. Despite their rarity, clinicians should consider lipomas when making differential diagnoses of soft tissue tumors of the hand.
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Dehner C, Moon CI, Zhang X, Zhou Z, Miller C, Xu H, Wan X, Yang K, Mashl J, Gosline SJ, Wang Y, Zhang X, Godec A, Jones PA, Dahiya S, Bhatia H, Primeau T, Li S, Pollard K, Rodriguez FJ, Ding L, Pratilas CA, Shern JF, Hirbe AC. Chromosome 8 gain is associated with high-grade transformation in MPNST. JCI Insight 2021; 6:146351. [PMID: 33591953 PMCID: PMC8026192 DOI: 10.1172/jci.insight.146351] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/10/2021] [Indexed: 12/15/2022] Open
Abstract
One of the most common malignancies affecting adults with Neurofibromatosis type 1 (NF1) is the malignant peripheral nerve sheath tumor (MPNST), an aggressive and often fatal sarcoma that commonly arises from benign plexiform neurofibromas. Despite advances in our understanding of MPNST pathobiology, there are few effective therapeutic options, and no investigational agents have proven successful in clinical trials. To further understand the genomic heterogeneity of MPNST, and to generate a preclinical platform that encompasses this heterogeneity, we developed a collection of NF1-MPNST patient-derived xenografts (PDX). These PDX were compared with the primary tumors from which they were derived using copy number analysis, whole exome sequencing, and RNA sequencing. We identified chromosome 8 gain as a recurrent genomic event in MPNST and validated its occurrence by FISH in the PDX and parental tumors, in a validation cohort, and by single-cell sequencing in the PDX. Finally, we show that chromosome 8 gain is associated with inferior overall survival in soft-tissue sarcomas. These data suggest that chromosome 8 gain is a critical event in MPNST pathogenesis and may account for the aggressive nature and poor outcomes in this sarcoma subtype.
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Affiliation(s)
| | - Chang In Moon
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Xiyuan Zhang
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Zhaohe Zhou
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Chris Miller
- McDonnell Genome Institute, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Hua Xu
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,The First Affiliated Hospital, Nanchang University, Nangchang, China
| | - Xiaodan Wan
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,The First Affiliated Hospital, Nanchang University, Nangchang, China
| | - Kuangying Yang
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Jay Mashl
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Sara Jc Gosline
- Pacific Northwest National Laboratory, Seattle, Washington, USA
| | - Yuxi Wang
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Xiaochun Zhang
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Abigail Godec
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Paul A Jones
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Sonika Dahiya
- Department of Pathology and Immunology and.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
| | - Himanshi Bhatia
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Tina Primeau
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Shunqiang Li
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
| | - Kai Pollard
- Division of Pediatric Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland, USA
| | - Fausto J Rodriguez
- Department of Pathology, John Hopkins University, Baltimore, Maryland, USA
| | - Li Ding
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
| | - Christine A Pratilas
- Division of Pediatric Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland, USA
| | - Jack F Shern
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Angela C Hirbe
- Department of Internal Medicine, Division of Oncology, Washington University in St. Louis, St. Louis, Missouri, USA.,Siteman Cancer Center Division of Pediatric Oncology, St. Louis, Missouri, USA
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Mejía Granados DM, de Baptista MB, Bonadia LC, Bertuzzo CS, Steiner CE. Clinical and Molecular Investigation of Familial Multiple Lipomatosis: Variants in the HMGA2 Gene. Clin Cosmet Investig Dermatol 2020; 13:1-10. [PMID: 32021365 PMCID: PMC6956394 DOI: 10.2147/ccid.s213139] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 09/24/2019] [Indexed: 12/24/2022]
Abstract
Background Familial multiple lipomatosis (FML) is an autosomal dominant disorder characterized by the slow growth of encapsulated nodules spread across the trunk and limbs. Currently, there is no specific etiology; therefore, its molecular and biological bases need to be better understood. High-throughput sequencing technologies appear to be a cost-effective tool and have a pivotal role in elucidating different genodermatoses. Objective This study aimed to perform a clinical and molecular characterization of constitutional DNA of seven individuals belonging to five unrelated families diagnosed with FML. Patients and methods Clinical aspects were obtained from medical records and physical examination. HMGA2 gene was investigated using Sanger sequencing method. Mutational analysis of other genes associated with syndromic lipomatosis AKT1, APC, PIK3CA, MEN-1, and PTEN was performed through next-generation sequencing. Results In this series, FML was predominant among women who were overweight and reaching the age of thirty and was associated with gastrointestinal comorbidity. Histopathological diagnosis of biopsies revealed typical features of both lipoma and angiolipoma. We identified two identical novel variants with unknown significance in exon 5 of the HMGA2 gene in two participants of different families. There were no additional changes in exons 1 to 4 of the HMGA2 gene. Multi-gene panel was normal in all cases. Conclusion Variants found in exon 5 of the HMGA2 gene have not been described and have an uncertain significance in the genesis of FML. Further studies, including a more significant number of affected individuals and functional analysis of the novel variants of HGMA2 gene, should be undertaken to better understand its biological role in FML.
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Affiliation(s)
- Diana Marcela Mejía Granados
- Department of Medical Genetics and Genomic Medicine, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Marcella Bergamini de Baptista
- Department of Medical Genetics and Genomic Medicine, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Luciana Cardoso Bonadia
- Department of Medical Genetics and Genomic Medicine, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Carmen Silvia Bertuzzo
- Department of Medical Genetics and Genomic Medicine, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Carlos Eduardo Steiner
- Department of Medical Genetics and Genomic Medicine, School of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
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Chebib I, Jo VY. Application of ancillary studies in soft tissue cytology using a pattern‐based approach. Cancer Cytopathol 2018; 126 Suppl 8:691-710. [DOI: 10.1002/cncy.22030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/22/2018] [Accepted: 05/22/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Ivan Chebib
- James Homer Wright Pathology Laboratories Massachusetts General Hospital Boston Massachusetts
- Harvard Medical School Boston Massachusetts
| | - Vickie Y. Jo
- Department of Pathology Brigham and Women’s Hospital Boston Massachusetts
- Harvard Medical School Boston Massachusetts
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8
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Piton N, Angot É, Marguet F, Sabourin JC. HMGA2 immunostaining is a straightforward technique which helps to distinguish pulmonary fat-forming lesions from normal adipose tissue in small biopsies: a retrospective observational study about a series of 13 lung biopsies. Diagn Pathol 2017; 12:21. [PMID: 28228139 PMCID: PMC5322620 DOI: 10.1186/s13000-017-0603-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 01/13/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND A tracheobronchial lesion observed during an endoscopic examination is usually sampled by the pulmonologist and sent to the pathologist for microscopic examination. Adipocytes may be observed in the lamina propria of tracheobronchial biopsies, which may complicate diagnosis of sampled lesions because these adipose cells may be part of the lesion (lipoma or pulmonary hamartoma), but may also be a normal component of the bronchial mucosa. Because endoscopic samples frequently miss their target, adipocytes observed in such biopsies usually lead to uncertainty regarding diagnosis. Both pulmonary hamartomas and lipomas have a high frequency of translocations involving HMGA2, resulting in over expression of the fusion protein. The literature suggests that only 31% of tracheobronchial lipomas are correctly diagnosed on biopsy, sometimes leading to unnecessary aggressive surgical resection. METHODS We performed retrospective study of tracheo-bronchial biopsies containing adipocytes using HMGA2 immunostaining in order to define their nature and to assess the diagnostic utility of this marker. RESULTS In total, 13 lesions biopsied in 12 patients and containing adipocytes were immunostained for HMGA2. Nuclear immunostaining was detected in 7 out of the 13 lesions (54%), allowing us to diagnose a lipoma or hamartoma. CONCLUSION HMGA2 immunostaining is an affordable and straightforward technique for accurate description of biopsies containing adipose cells. When positive, a diagnosis of benign adipose lesion can be made with confidence since well-differentiated liposarcomas have never been described in the tracheobronchial tree. Our work enabled us to diagnose a benign adipose lesion in 54% of cases, above the rate of 31% reported in the literature, based solely on morphological analysis. Overall, HMGA2 immunostaining could help pathologists to provide accurate diagnosis of tracheobronchial adipose lesions, leading to conservative treatment, for the overall benefit of patients.
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Affiliation(s)
- Nicolas Piton
- Department of Pathology, Rouen University Hospital, F 76 000 Rouen, France.
| | - Émilie Angot
- Department of Pathology, Rouen University Hospital, F 76 000 Rouen, France
| | - Florent Marguet
- Department of Pathology, Rouen University Hospital, F 76 000 Rouen, France
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Santamaría Nuñez G, Robles CMG, Giraudon C, Martínez-Leal JF, Compe E, Coin F, Aviles P, Galmarini CM, Egly JM. Lurbinectedin Specifically Triggers the Degradation of Phosphorylated RNA Polymerase II and the Formation of DNA Breaks in Cancer Cells. Mol Cancer Ther 2016; 15:2399-2412. [PMID: 27630271 DOI: 10.1158/1535-7163.mct-16-0172] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 06/15/2016] [Indexed: 11/16/2022]
Abstract
We have defined the mechanism of action of lurbinectedin, a marine-derived drug exhibiting a potent antitumor activity across several cancer cell lines and tumor xenografts. This drug, currently undergoing clinical evaluation in ovarian, breast, and small cell lung cancer patients, inhibits the transcription process through (i) its binding to CG-rich sequences, mainly located around promoters of protein-coding genes; (ii) the irreversible stalling of elongating RNA polymerase II (Pol II) on the DNA template and its specific degradation by the ubiquitin/proteasome machinery; and (iii) the generation of DNA breaks and subsequent apoptosis. The finding that inhibition of Pol II phosphorylation prevents its degradation and the formation of DNA breaks after drug treatment underscores the connection between transcription elongation and DNA repair. Our results not only help to better understand the high specificity of this drug in cancer therapy but also improve our understanding of an important transcription regulation mechanism. Mol Cancer Ther; 15(10); 2399-412. ©2016 AACR.
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Affiliation(s)
- Gema Santamaría Nuñez
- Cell Biology and Pharmacogenomics Department, Pharmamar SA, Colmenar Viejo, Madrid, Spain
| | - Carlos Mario Genes Robles
- Department of Functional Genomics and Cancer, IGBMC, CNRS/INSERM/University of Strasbourg, C. U. Strasbourg, France
| | - Christophe Giraudon
- Department of Functional Genomics and Cancer, IGBMC, CNRS/INSERM/University of Strasbourg, C. U. Strasbourg, France
| | | | - Emmanuel Compe
- Department of Functional Genomics and Cancer, IGBMC, CNRS/INSERM/University of Strasbourg, C. U. Strasbourg, France
| | - Frédéric Coin
- Department of Functional Genomics and Cancer, IGBMC, CNRS/INSERM/University of Strasbourg, C. U. Strasbourg, France
| | - Pablo Aviles
- Cell Biology and Pharmacogenomics Department, Pharmamar SA, Colmenar Viejo, Madrid, Spain
| | - Carlos María Galmarini
- Cell Biology and Pharmacogenomics Department, Pharmamar SA, Colmenar Viejo, Madrid, Spain.
| | - Jean-Marc Egly
- Department of Functional Genomics and Cancer, IGBMC, CNRS/INSERM/University of Strasbourg, C. U. Strasbourg, France
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Nili F, Baghai F, Aghai A, Etebarian A. Well-differentiated liposarcoma of the floor of the mouth: Report of a rare case and review of the literature. J Oral Maxillofac Pathol 2016; 20:312-5. [PMID: 27601829 PMCID: PMC4989567 DOI: 10.4103/0973-029x.185984] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Liposarcomas are extremely rare in the oral cavity. Less than 100 cases of oral liposarcoma have been reported in the world wide literature, mostly occurring in the buccal mucosa, whereas only <10 cases have been reported in the floor of the mouth. We present a rare case of oral liposarcoma that occurred in the floor of the mouth of a 45-year-old female patient. She had a history of two previous recurrences and underwent surgical excision with 24 months of follow-up. Clinical as well as histopathological features and therapeutic approaches of liposarcomas are discussed here, and a literature review is presented. Intraoral liposarcomas have a high rate of local recurrences but generally favorable prognosis based on the histopathologic subtype, location and clear surgical margins. Conservative surgical therapy without adjuvant chemoradiotherapy is recommended, due to the rarity of distant metastasis.
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Affiliation(s)
- Fatemeh Nili
- Department of Pathology, Cancer Institute, Imam Khomeini Hospital Complex, Tehran, Iran
| | - Fereshteh Baghai
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Aghai
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Arghavan Etebarian
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Alborz University of Medical Sciences, Karaj, Iran
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11
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S-100 protein expressing spindle cells in spindle cell lipoma: a diagnostic pitfall. Virchows Arch 2016; 469:435-8. [PMID: 27444171 DOI: 10.1007/s00428-016-1996-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 06/18/2016] [Accepted: 07/14/2016] [Indexed: 10/21/2022]
Abstract
Spindle cell lipoma represents a distinct clinicopathological entity and is related to cellular angiofibroma and mammary-type myofibroblastoma. Spindle cell lipomas are composed of mature lipogenic cells and a variable number of CD34-positive spindle cells that show loss of retinoblastoma protein expression. Spindle cell lipomas occasionally express S-100 protein. We studied one case of purely dermal spindle cell lipoma and four cases of classical subcutaneous spindle cell lipoma arising in one female and four male patients (age ranged from 55 to 69 years). The neoplasms arose on the nose, the chin, the neck, the forehead and retroauricular, and all lesions had been marginally or incompletely excised. The studied cases showed classical histological and immunohistochemical features of spindle cell lipoma and, in addition, strong expression of S-100 protein by spindle-shaped tumour cells. S-100-expression in spindle cell lipoma may cause problems in the differential diagnosis with neural and melanocytic neoplasms and emphasizes the plasticity of the spindle cells in spindle cell lipoma.
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12
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Nishio J, Iwasaki H, Shibata T, Nabeshima K, Naito M. Duplication of chromosome segment 12q13-15 in a lipomatous tumor with minimal nuclear atypia: A case report. Oncol Lett 2016; 11:2875-2878. [PMID: 27073568 DOI: 10.3892/ol.2016.4305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 03/06/2015] [Indexed: 11/06/2022] Open
Abstract
Ordinary lipoma is cytogenetically characterized by structural rearrangements, particularly translocations, of 12q13-15. By contrast, atypical lipomatous tumors exhibit supernumerary ring or giant marker chromosomes that are composed mainly of amplified material from the 12q13-15 chromosome segment. The present study describes the cytogenetic and molecular cytogenetic findings from a lipomatous tumor with minimal nuclear atypia that was identified in a 49-year-old female patient. Magnetic resonance imaging of the right shoulder revealed a 13-cm fatty mass in the subcutaneous layer that possessed only pencil-line septa. Contrast-enhanced fat-suppressed T1-weighted images demonstrated faint enhancement. A marginal excision was performed. Histologically, the tumor was composed of lobules that consisted of mature adipocytes separated by thin fibrous septa. There was minimal nuclear atypia in certain cells, and a small number of binucleated cells were also observed within the tumor. Immunohistochemically, the tumor cells did not reveal the expression of murine double-minute 2 (MDM2). Cytogenetic analysis revealed a complex karyotype with several numerical and structural alterations, including 12q rearrangements. Spectral karyotyping demonstrated a duplication of chromosome segment 12q13-15. Interphase fluorescence in situ hybridization analysis revealed no MDM2 gene amplification. The present case indicates that duplication of 12q may be associated with minimal nuclear atypia in a subset of lipomatous tumors.
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Affiliation(s)
- Jun Nishio
- Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan
| | - Hiroshi Iwasaki
- Department of Pathology, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan
| | - Terufumi Shibata
- Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan
| | - Kazuki Nabeshima
- Department of Pathology, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan
| | - Masatoshi Naito
- Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan
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13
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Olson DR, Schowinsky JT. Immunohistochemical analysis of HMGA2 expression fails to provide evidence of a neoplastic basis for 'primary' synovial lipomatosis. Histopathology 2015; 67:420-2. [PMID: 25585965 DOI: 10.1111/his.12652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Damon R Olson
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Jeffrey T Schowinsky
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
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14
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Sasaki T, Ogose A, Kawashima H, Hotta T, Hatano H, Ariizumi T, Umezu H, Ohashi R, Tohyama T, Tanabe N, Endo N. Real-time polymerase chain reaction analysis of MDM2 and CDK4 expression using total RNA from core-needle biopsies is useful for diagnosing adipocytic tumors. BMC Cancer 2014; 14:468. [PMID: 24965044 PMCID: PMC4075630 DOI: 10.1186/1471-2407-14-468] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 06/19/2014] [Indexed: 12/31/2022] Open
Abstract
Background Diagnosing adipocytic tumors can be challenging because it is often difficult to morphologically distinguish between benign, intermediate and malignant adipocytic tumors, and other sarcomas that are histologically similar. Recently, a number of tumor-specific chromosome translocations and associated fusion genes have been identified in adipocytic tumors and atypical lipomatous tumors/well-differentiated liposarcomas (ALT/WDL), which have a supernumerary ring and/or giant chromosome marker with amplified sequences of the MDM2 and CDK4 genes. The purpose of this study was to investigate whether quantitative real-time polymerase chain reaction (PCR) could be used to amplify MDM2 and CDK4 from total RNA samples obtained from core-needle biopsy sections for the diagnosis of ALT/WDL. Methods A series of lipoma (n = 124) and ALT/WDL (n = 44) cases were analyzed for cytogenetic analysis and lipoma fusion genes, as well as for MDM2 and CDK4 expression by real-time PCR. Moreover, the expression of MDM2 and CDK4 in whole tissue sections was compared with that in core-needle biopsy sections of the same tumor in order to determine whether real-time PCR could be used to distinguish ALT/WDL from lipoma at the preoperative stage. Results In whole tissue sections, the medians for MDM2 and CDK4 expression in ALT/WDL were higher than those in the lipomas (P < 0.05). Moreover, karyotype subdivisions with rings and/or giant chromosomes had higher MDM2 and CDK4 expression levels compared to karyotypes with 12q13-15 rearrangements, other abnormal karyotypes, and normal karyotypes (P < 0.05). On the other hand, MDM2 and CDK4 expression levels in core-needle biopsy sections were similar to those in whole-tissue sections (MDM2: P = 0.6, CDK4: P = 0.8, Wilcoxon signed-rank test). Conclusion Quantitative real-time PCR of total RNA can be used to evaluate the MDM2 and CDK4 expression levels in core-needle biopsies and may be useful for distinguishing ALT/WDL from adipocytic tumors. Thus, total RNA from core-needle biopsy sections may have potential as a routine diagnostic tool for other tumors where gene overexpression is a feature of the tumor.
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Affiliation(s)
- Taro Sasaki
- Division of Orthopedic Surgery, Niigata University Graduate School of Medical and Dental Sciences, 757-1, Asahimachi-dori, Niigata City, Niigata 951-8510, Japan.
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Traboulsi SL, Wazzan W, Abou Ghaida RR. Renal Angiomyxolipoma: Its First Appearance! Urol Case Rep 2014; 2:89-92. [PMID: 26955555 PMCID: PMC4733029 DOI: 10.1016/j.eucr.2014.03.006] [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: 03/09/2014] [Accepted: 03/12/2014] [Indexed: 11/25/2022] Open
Abstract
Angiomyxolipoma is considered a very rare subtype of lipoma, with the latter being the most common type of mesenchymal neoplasm. Only 17 cases have been described in English medical literature. Angiomyxolipomas have been described in many locations, mostly in the subcutaneous tissue. In this report, we present the first case of renal angiomyxolipoma ever encountered. Diagnosis was made after many differential diagnoses had been ruled out. Subsequent management and follow-up are illustrated along with a discussion and review of literature.
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Affiliation(s)
- Samer L Traboulsi
- Division of Urology, Department of Surgery, American University of Beirut, Beirut, Lebanon
| | - Wassim Wazzan
- Division of Urology, Department of Surgery, American University of Beirut, Beirut, Lebanon
| | - Rami R Abou Ghaida
- Division of Urology, Department of Surgery, American University of Beirut, Beirut, Lebanon
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Neufeld M, Medlicott S, Nickerson D. Case of hibernoma in the right supraclavicular fossa. THE CANADIAN JOURNAL OF PLASTIC SURGERY = JOURNAL CANADIEN DE CHIRURGIE PLASTIQUE 2013; 13:33-5. [PMID: 24223000 DOI: 10.1177/229255030501300106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A patient with a supraclavicular mass originally diagnosed as a lipoma who was referred to a plastic surgeon for definitive treatment is presented. Gross intraoperative findings were inconsistent with lipoma, and subsequent pathological evaluation revealed the mass to be a hibernoma (a benign, brown adipose tumour). The incidence, etiology, presentation, pathology and imaging characteristics of this somewhat rare soft tissue tumour are reviewed.
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Affiliation(s)
- Marilyn Neufeld
- Faculty of Medicine, Division of Plastic Surgery, University of Calgary and Calgary Regional Health Authority, Calgary, Alberta
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Abstract
The rapid growth of tissue-based molecular pathology has changed the practice of the surgical pathologist signing out soft tissue tumors. This information is presented in a practical and succinct manner focusing on clinically validated findings that have diagnostic or therapeutic relevance. The approach is morphologically based and focuses on differential diagnoses and clinical scenarios. Molecular techniques can be an invaluable ancillary tool.
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Affiliation(s)
- Robin D LeGallo
- Department of Pathology, University of Virginia Health System, 1215 Lee Street, HEP 3064, Charlottesville, VA 22908, USA.
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19
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ElMoneim HMA, El Sherbiny YM. Evaluation of immunohistochemical expression of MDM2 protein in comparison with MDM2 gene amplification in diagnosing lipomatous tumors. EGYPTIAN JOURNAL OF PATHOLOGY 2011; 31:92-97. [DOI: 10.1097/01.xej.0000406597.88861.1e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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20
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A novel t(8;13)(q21;q22) translocation in a pediatric lipoma. Cancer Genet 2011; 204:629-33. [DOI: 10.1016/j.cancergen.2011.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 10/17/2011] [Accepted: 10/19/2011] [Indexed: 11/18/2022]
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Abstract
Abstract
Context.—Soft tissue pathology encompasses a remarkably diverse assortment of benign and malignant soft tissue tumors. Rendering a definitive diagnosis is complicated not only by the large volume of existing histologic subtypes (>100) but also frequently by the presence of overlapping clinical, histologic, immunohistochemical, and/or radiographic features. During the past 3 decades, mesenchymal tumor–specific, cytogenetic and molecular genetic abnormalities have demonstrated an increasingly important, ancillary role in mesenchymal tumor diagnostics.
Objectives.—To review molecular diagnostic tools available to the pathologist to further classify specific soft tissue tumor types and recurrent aberrations frequently examined. Advantages and limitations of individual approaches will also be highlighted.
Data Sources.—Previously published review articles, peer-reviewed research publications, and the extensive cytogenetic and molecular diagnostic experience of the authors to include case files of The University of Nebraska Medical Center.
Conclusions.—Cytogenetic and molecular genetic assays are used routinely for diagnostic purposes in soft tissue pathology and represent a powerful adjunct to complement conventional microscopy and clinicoradiographic evaluation in the formulation of an accurate diagnosis. Care should be taken, however, to recognize the limitations of these approaches. Ideally, more than one technical approach should be available to a diagnostic laboratory to compensate for the shortcomings of each approach in the assessment of individual specimens.
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Manor E, Sion-Vardy N, Joshua BZ, Bodner L. Oral lipoma: analysis of 58 new cases and review of the literature. Ann Diagn Pathol 2011; 15:257-61. [PMID: 21447447 DOI: 10.1016/j.anndiagpath.2011.01.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 01/19/2011] [Indexed: 11/17/2022]
Abstract
Lipomas are common soft-tissue tumors but occur infrequently in the oral region. Here, we present 58 new cases of oral lipoma (OL), their clinical features, diagnostic workup, and management. The records of 58 patients with OL were reviewed. Demographic data, presenting symptoms, primary tumor site, histopathology, and clinical management were analyzed. Extraoral and intraosseous lesions were excluded. The patients were 29 men and 29 women with mean age of 59.7 years, range, 11 to 98 years. Tumor sites included the buccal mucosa (n = 31), tongue (n = 10), lip (n = 6), floor of the mouth (n = 6), and vestibule (n = 5). The mean tumor size was 2.1 cm (range, 0.3-5.0 cm). The mean tumor duration before excision was 2.6 years (31.2 months), ranging from 2 months to 12 years. Most common presenting symptom was an asymptomatic, circumscribed mass. Histologically, the tumors were classified as classic lipoma (n = 28), fibrolipoma (n = 19), intramuscular lipoma (n = 4), minor salivary gland lipoma (n = 2), angiolipoma (n = 2), and spindle cell lipoma (n = 3). A case of spindle cell lipoma affecting the lower lip that has not been described previously is presented. The provided treatment was surgical excision. Although uncommon, OL are most common in adults and very uncommon in children. No sex predilection was found. The buccal mucosa region is the most common site followed by the tongue. Classic lipomas are most common in the oral region and comprise 48% of the tumors. A case of spindle cell lipoma of the lower lip is reported. Its clinical, histologic, and cytogenetic workup is the first well-documented case. Further cytogenetic studies should be undertaken to learn more about the pathogenesis and tumorigenesis of OL.
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Affiliation(s)
- Esther Manor
- Institute of Human Genetics, Soroka University Medical Center, Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
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Plesec TP. Gastrointestinal Mesenchymal Neoplasms other than Gastrointestinal Stromal Tumors: Focusing on Their Molecular Aspects. PATHOLOGY RESEARCH INTERNATIONAL 2011; 2011:952569. [PMID: 21403834 PMCID: PMC3042671 DOI: 10.4061/2011/952569] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 01/03/2011] [Indexed: 12/20/2022]
Abstract
Gastrointestinal (GI) mesenchymal tumors other than gastrointestinal stromal tumor (GIST) are rare neoplasms, but they often enter the differential diagnosis of more common GI lesions. Some of these mesenchymal tumors in the GI tract have well understood molecular pathologic aspects, including desmoid tumors, inflammatory myofibroblastic tumor (IMT), clear cell sarcoma (CCS), inflammatory fibroid polyp (IFP), and synovial sarcoma (SS). Molecular pathology is fast becoming a mainstream focus in laboratories because it aids in the precise classification of tumors, may be prognostic, and may help predict response to therapy. The following review is not intended as an exhaustive summary of all mesenchymal tumors that have been reported to involve the GI tract, but instead will highlight the current knowledge of the most important non-GIST GI mesenchymal neoplasms, focusing on those tumors with well-characterized molecular pathology and how the molecular pathologic features impact current diagnostic, therapeutic, and prognostic standards.
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Affiliation(s)
- Thomas P Plesec
- Cleveland Clinic, 9500 Euclid Avenue, L25, Cleveland, OH 44195, USA
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24
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Contributions of cytogenetics and molecular cytogenetics to the diagnosis of adipocytic tumors. J Biomed Biotechnol 2011; 2011:524067. [PMID: 21274402 PMCID: PMC3025394 DOI: 10.1155/2011/524067] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2010] [Accepted: 12/15/2010] [Indexed: 12/14/2022] Open
Abstract
Over the last 20 years, a number of tumor-specific chromosomal translocations and associated fusion genes have been identified for mesenchymal neoplasms including adipocytic tumors. The addition of molecular cytogenetic techniques, especially fluorescence in situ hybridization (FISH), has further enhanced the sensitivity and accuracy of detecting nonrandom chromosomal translocations and/or other rearrangements in adipocytic tumors. Indeed, most resent molecular cytogenetic analysis has demonstrated a translocation t(11;16)(q13;p13) that produces a C11orf95-MKL2 fusion gene in chondroid lipoma. Additionally, it is well recognized that supernumerary ring and/or giant rod chromosomes are characteristic for atypical lipomatous tumor/well-differentiated liposarcoma and dedifferentiated liposarcoma, and amplification of 12q13–15 involving the MDM2, CDK4, and CPM genes is shown by FISH in these tumors. Moreover, myxoid/round cell liposarcoma is characterized by a translocation t(12;16)(q13;p11) that fuses the DDIT3 and FUS genes. This paper provides an overview of the role of conventional cytogenetics and molecular cytogenetics in the diagnosis of adipocytic tumors.
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25
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Lipoma-like lipoblastoma arising from the femoral vein. J Orthop Sci 2011; 16:114-8. [PMID: 21249406 DOI: 10.1007/s00776-010-0001-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2009] [Accepted: 03/03/2010] [Indexed: 10/18/2022]
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Sandberg AA, Meloni-Ehrig AM. Cytogenetics and genetics of human cancer: methods and accomplishments. ACTA ACUST UNITED AC 2010; 203:102-26. [DOI: 10.1016/j.cancergencyto.2010.10.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2010] [Revised: 09/22/2010] [Accepted: 10/07/2010] [Indexed: 12/31/2022]
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Huang D, Sumegi J, Dal Cin P, Reith JD, Yasuda T, Nelson M, Muirhead D, Bridge JA. C11orf95-MKL2 is the resulting fusion oncogene of t(11;16)(q13;p13) in chondroid lipoma. Genes Chromosomes Cancer 2010; 49:810-8. [PMID: 20607705 DOI: 10.1002/gcc.20788] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Chondroid lipoma, a rare benign adipose tissue tumor, may histologically resemble myxoid liposarcoma or extraskeletal myxoid chondrosarcoma, but is genetically distinct. In this study, an identical reciprocal translocation, t(11;16)(q13;p13), was identified in three chondroid lipomas, a finding consistent with previously isolated reports. A fluorescence in situ hybridization (FISH)-based positional cloning strategy using a series of bacterial artificial chromosome (BAC) probe combinations designed to narrow the 16p13 breakpoint revealed MKL2 as the candidate gene. Subsequent 5' RACE studies demonstrated C11orf95 as the MKL2 fusion gene partner. MKL/myocardin-like 2 (MKL2) encodes myocardin-related transcription factor B in a megakaryoblastic leukemia gene family, and C11orf95 (chromosome 11 open reading frame 95) is a hypothetical protein. Sequencing analysis of reverse transcription-polymerse chain reaction (RT-PCR) generated transcripts from all three chondroid lipomas defined the fusion as occurring between exons 5 and 9 of C11orf95 and MKL2, respectively. Dual-color breakpoint spanning probe sets custom-designed for recognition of the translocation event in interphase cells confirmed the anticipated rearrangements of the C11orf95 and MKL2 loci in all cases. The FISH and RT-PCR assays developed in this study can serve as diagnostic adjuncts for the identification of this novel C11orf95-MKL2 fusion oncogene in chondroid lipoma.
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Affiliation(s)
- Dali Huang
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-3135, USA
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Molecular Testing for Lipomatous Tumors: Critical Analysis and Test Recommendations Based on the Analysis of 405 Extremity-based Tumors. Am J Surg Pathol 2010; 34:1304-11. [DOI: 10.1097/pas.0b013e3181e92d0b] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Wang X, Zamolyi RQ, Zhang H, Pannain VL, Medeiros F, Erickson-Johnson M, Jenkins RB, Oliveira AM. Fusion of HMGA1 to the LPP/TPRG1 intergenic region in a lipoma identified by mapping paraffin-embedded tissues. ACTA ACUST UNITED AC 2009; 196:64-7. [PMID: 19963137 DOI: 10.1016/j.cancergencyto.2009.09.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 08/31/2009] [Accepted: 09/09/2009] [Indexed: 10/20/2022]
Abstract
Ordinary lipoma frequently harbors rearrangement of HMGA2. LPP is the most common partner gene to HMGA2, but has not been seen fused to HMGA1. We report the fusion of HMGA1 to the intergenic region between LPP and TPRG1 in a lipoma. Conventional cytogenetic analysis of an abdominal-wall lipoma diagnosed in a 60-year-old woman showed a t(3;6)(q27;p21). Molecular cytogenetic mapping of available paraffin-embedded tissues revealed the fusion of HMGA1 to a 139-kb genomic region between the LPP and TPRG1 loci. No rearrangement of HMGA2 was found. The biological function of this novel fusion could be similar to the role of HMGA2-LPP in tumorigenesis.
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Affiliation(s)
- Xiaoke Wang
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA
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31
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Wang X, Hulshizer RL, Erickson-Johnson MR, Flynn HC, Jenkins RB, Lloyd RV, Oliveira AM. Identification of novelHMGA2fusion sequences in lipoma: Evidence that deletion of let-7 miRNA consensus binding site 1 in theHMGA23′ UTR is not critical forHMGA2transcriptional upregulation. Genes Chromosomes Cancer 2009; 48:673-8. [DOI: 10.1002/gcc.20674] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Bartuma H, Panagopoulos I, Collin A, Trombetta D, Domanski HA, Mandahl N, Mertens F. Expression levels of HMGA2 in adipocytic tumors correlate with morphologic and cytogenetic subgroups. Mol Cancer 2009; 8:36. [PMID: 19508721 PMCID: PMC2702300 DOI: 10.1186/1476-4598-8-36] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 06/09/2009] [Indexed: 11/21/2022] Open
Abstract
Background The HMGA2 gene encodes a protein that alters chromatin structure. Deregulation, typically through chromosomal rearrangements, of HMGA2 has an important role in the development of several mesenchymal neoplasms. These rearrangements result in the expression of a truncated protein lacking the acidic C-terminus, a fusion protein consisting of the AT-hook domains encoded by exons 1–3 and parts from another gene, or a full-length protein; loss of binding sites for regulatory microRNA molecules from the 3' untranslated region (UTR) of HMGA2 has been suggested to be a common denominator. Methods Seventy adipocytic tumors, representing different morphologic and cytogenetic subgroups, were analyzed by qRT-PCR to study the expression status of HMGA2; 18 of these tumors were further examined by PCR to search for mutations or deletions in the 3'UTR. Results Type (full-length or truncated) and level of expression varied with morphology and karyotype, with the highest levels in atypical lipomatous tumors and lipomas with rearrangements of 12q13-15 and the lowest in lipomas with 6p- or 13q-rearrangements, hibernomas, spindle cell lipomas and myxoid liposarcomas. All 18 examined tumors showed reduced or absent expression of the entire, or parts of, the 3'UTR, which was not due to mutations at the DNA level. Conclusion In adipocytic tumors with deregulated HMGA2 expression, the 3'UTR is consistently lost, either due to physical disruption of HMGA2 or a shift to production of shorter 3'UTR.
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Affiliation(s)
- Hammurabi Bartuma
- Department of Clinical Genetics, Lund University Hospital, Lund, Sweden.
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Grivas TB, Psarakis SA, Kaspiris Α, Liapi G. Giant lipoma of the thenar--case study and contemporary approach to its aetiopathogenicity. Hand (N Y) 2009; 4:173-6. [PMID: 19093156 PMCID: PMC2686794 DOI: 10.1007/s11552-008-9157-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2008] [Accepted: 12/04/2008] [Indexed: 10/21/2022]
Abstract
Giant lipomas of the thenar are rare tumours of the adipose tissue of the hand, with a benign prognosis. Apart from the cosmetic problems they may cause, their most frequent complications include a compromise in functionality and pressure upon the nerves, mainly on the radial nerve. The first step in their management is their differential diagnosis from well-differentiated liposarcomas (WDLPS), as they require a different therapeutic approach. This step is completed with the aid of MRIs, biopsies and modern immunohistochemical methods, which offer high specificity and sensitivity. Our paper presents a case of giant lipoma of the thenar, with a review of the relevant literature, focusing on the disease's molecular genetics, which is a very important field of research today.
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Affiliation(s)
- T. B. Grivas
- Department of Trauma and Orthopaedics, “Thriasio” General Hospital-NHS, G. Gennimata Avenue, Magoula, 19600 Attica Greece
| | - S. A. Psarakis
- Department of Trauma and Orthopaedics, “Thriasio” General Hospital-NHS, G. Gennimata Avenue, Magoula, 19600 Attica Greece
| | - Α. Kaspiris
- Department of Trauma and Orthopaedics, “Thriasio” General Hospital-NHS, G. Gennimata Avenue, Magoula, 19600 Attica Greece
| | - G. Liapi
- Pathology Department, “Thriasio” General Hospital-NHS, G. Gennimata Avenue, Magoula, 19600 Attica Greece
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Morerio C, Nozza P, Tassano E, Rosanda C, Granata C, Conte M, Panarello C. Differential diagnosis of lipoma-like lipoblastoma. Pediatr Blood Cancer 2009; 52:132-4. [PMID: 18798558 DOI: 10.1002/pbc.21747] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Lipoblastomas are rare benign tumors of white fatty tissue that occur primarily in young children. Occasionally, heterogeneity of morphological appearance and histological overlap with other lipogenic tumors are described. In such cases fluorescence in situ hybridization (FISH) analysis of PLAG1, a gene specifically rearranged in lipoblastoma, is necessary to prevent misdiagnosis. We present a case of lipoblastoma arising in an atypical site with histological features characteristic of lipoma. The correct diagnosis was made possible on cytogenetic grounds through the identification of the characteristic PLAG1-HAS2 fusion gene, thus allowing an appropriate clinical approach.
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Affiliation(s)
- Cristina Morerio
- Department of Pediatric Hematology/Oncology, Giannina Gaslini Institute, Genova, Italy
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Willmore-Payne C, Holden J, Turner KC, Proia A, Layfield LJ. Translocations and amplifications of chromosome 12 in liposarcoma demonstrated by the LSI CHOP breakapart rearrangement probe. Arch Pathol Lab Med 2008; 132:952-7. [PMID: 18517278 DOI: 10.5858/2008-132-952-taaoci] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2008] [Indexed: 11/06/2022]
Abstract
CONTEXT Liposarcomas display a number of molecular abnormalities involving chromosome 12. Myxoid and round cell liposarcomas are characterized by t(12;16)(q13; p11) or t(12;22)(q13;q12) translocations. Amplifications occur within the 12q13-15 region of atypical lipomatous tumors and well-differentiated liposarcomas but not lipomas. OBJECTIVE To investigate the performance characteristics of the LSI CHOP Breakapart Rearrangement Probe for the diagnosis of myxoid/round cell liposarcomas and atypical lipomas/well-differentiated liposarcomas. DESIGN We investigated a series of lipomatous neoplasms (5 lipomas, 5 well-differentiated liposarcomas, 22 myxoid/round cell liposarcomas, 2 liposarcomas not otherwise specified, and 2 dedifferentiated liposarcomas) and normal myometrium for abnormalities in the q13-15 region of chromosome 12. Cases were studied for the presence or absence of t(12;16)(q13;p11) or t(12;22)(q13;q12) translocations by the LSI CHOP Breakapart Rearrangement Probe. These probes contain a sequence encompassing the SAS and CDK4 genes. Four or more copies of this sequence were considered to represent amplification of these genes. RESULTS Rearrangement of the CHOP gene was seen in all evaluable myxoid liposarcomas. Rearrangements were seen in 1 dedifferentiated liposarcoma but not in normal myometrium or lipomas. Probe signal amplification was seen in all 5 well-differentiated liposarcomas and 1 myxoid liposarcoma. No signal amplification was seen in lipomas or myometrium. CONCLUSIONS Demonstration of translocations t(12; 16)(q13;p11) and t(12;22)(q13;q12) by the LSI CHOP Breakapart Rearrangement Probe appears to correlate with round cell/myxoid liposarcoma. The probe also demonstrated amplification of the 12q13-15 region in well-differentiated liposarcomas, making it useful for the diagnosis of these neoplasms. In a significant percentage of cases, high background fluorescence or poor probe staining made interpretation difficult.
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Kenney B, Richkind KE, Friedlaender G, Zambrano E. Chromosomal rearrangements in lipofibromatosis. ACTA ACUST UNITED AC 2008; 179:136-9. [PMID: 18036401 DOI: 10.1016/j.cancergencyto.2007.08.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2007] [Accepted: 08/14/2007] [Indexed: 11/26/2022]
Abstract
Lipofibromatosis is a relatively rare pediatric neoplasm, which usually manifests as an ill-defined soft tissue mass involving the upper and lower distal extremities, the trunk, and, less frequently, the head. To date, no cytogenetic abnormalities have been reported in this uncommon neoplasm. We present a case of lipofibromatosis featuring a three-way t(4;9;6) translocation in a 5-year-old boy.
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Affiliation(s)
- Barton Kenney
- Department of Pathology, Yale University School of Medicine, 430 Congress Avenue, P.O. Box 208023, New Haven, CT 06520-8023, USA
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Röpke A, Kalinski T, Kluba U, von Falkenhausen U, Wieacker P, Röpke M. PLAG1 activation in lipoblastoma coinciding with low-level amplification of a derivative chromosome 8 with a deletion del(8)(q13q21.2). Cytogenet Genome Res 2007; 119:33-8. [DOI: 10.1159/000109616] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Accepted: 05/24/2007] [Indexed: 11/19/2022] Open
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Hameed M, Clarke K, Amer HZ, Mahmet K, Aisner S. Cellular angiofibroma is genetically similar to spindle cell lipoma: a case report. ACTA ACUST UNITED AC 2007; 177:131-4. [PMID: 17854668 DOI: 10.1016/j.cancergencyto.2007.05.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Accepted: 05/10/2007] [Indexed: 10/22/2022]
Abstract
Cellular angiofibroma is a benign mesenchymal neoplasm of female and male genital tract composed of prominent vasculature and stromal spindle cells, often with admixture of adipose tissue. The tumor has histomorphologic similarities to angiomyofibroblastoma and spindle cell lipoma. Herein we describe a tumor arising in the perineal region of a 60-year-old man with morphological and immunohistochemical features of cellular angiofibroma and showing cytogenetic characteristics similar to spindle cell lipoma. To our knowledge, this is the first report of cytogenetic changes in cellular angiofibroma. The genetic overlap of these entities supports their origin from the same mesenchymal stem cell.
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Affiliation(s)
- Meera Hameed
- Department of Pathology, University of Medicine and Dentistry of New Jersey--New Jersey Medical School, 150 Bergen Street, UHE-141, Newark, NJ 07103, USA.
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Italiano A, Cardot N, Dupré F, Monticelli I, Keslair F, Piche M, Mainguené C, Coindre JM, Pedeutour F. Gains and complex rearrangements of the 12q13-15 chromosomal region in ordinary lipomas: the "missing link" between lipomas and liposarcomas? Int J Cancer 2007; 121:308-15. [PMID: 17372913 DOI: 10.1002/ijc.22685] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Well-differentiated liposarcomas (WDLPS) classically contain high-level amplification of 12q14-15 sequences, including the MDM2 and CDK4 genes, while lipomas are characterized by simple structural chromosome aberrations often involving HMGA2 at 12q15. Previous studies have shown that low-level gain of the 12q14-15 region, such as trisomy 12 and 12q15-24 duplication, might be sufficient for the development of minimal atypia and formation of WDLPS. Moreover, because some features, such as overexpression of HMGA2, are shared by both lipomas and WDLPS, it has been hypothesized that lipomas and WDLPS may form a genetic and morphological continuum. We report here the results of molecular cytogenetic analysis of 8 lipomas that had unusual chromosomal features resulting in gains of 12q14-15. While 3 cases had simple numerical rearrangements (trisomy 12) or structural rearrangements (unbalanced translocations with 12q gains), 5 cases were particularly intriguing because of peculiar features such as giant chromosomes, supernumerary chromosomes or neocentromeres that usually are the hallmark of WDLPS. Gain of 12q14-15 sequences including extra copies of MDM2 and CDK4 were detected by fluorescence in situ hybridization analysis in all analyzed cases but no expression of MDM2 and CDK4 was observed suggesting that these genomic imbalances had no functional consequence. We observed rearrangements of HMGA2 in 5 out 8 cases. Altogether, our results indicate that moderate gains of 12q are not always associated with a malignant phenotype, and that some intermediary forms exist between classical lipomas and classical WDLPS. Some of these intermediary forms may correspond to a genomic premalignant condition while some may have no malignant potential.
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Affiliation(s)
- Antoine Italiano
- Faculty of Medicine, Laboratory of Solid Tumors Genetics, Nice University Hospital and CNRS UMR 6543, Nice, France
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Szuhai K, Ijszenga M, Knijnenburg J, Dijkstra S, de Schepper A, Tanke HJ, Hogendoorn PCW. Does parosteal liposarcoma differ from other atypical lipomatous tumors/well-differentiated liposarcomas? A molecular cytogenetic study using combined multicolor COBRA-FISH karyotyping and array-based comparative genomic hybridization. ACTA ACUST UNITED AC 2007; 176:115-20. [PMID: 17656253 DOI: 10.1016/j.cancergencyto.2007.03.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2007] [Revised: 03/23/2007] [Accepted: 03/30/2007] [Indexed: 11/29/2022]
Abstract
Parosteal adipocytic tumors of the bone are extremely rare. As a result, (cyto-) genetic data on this entity are essentially lacking. In the literature there is debate as to whether these lesions should be classified according to the criteria used in soft-tissue tumor pathology, or if they should be considered a separate bone tumor entity. Here we present a 68-year-old male patient with a tumor in his right upper leg diagnosed as parosteal atypical lipomatous tumor/well-differentiated liposarcoma (ALT/WDLS) on the basis of clinico-radiologic and pathologic findings. Molecular cytogenetic investigations using combined binary ratio labeling fluorescence in situ hybridization and array comparative genomic hybridization showed abnormalities, which are in accordance with the histologic appearance of an atypical lipomatous tumor/well-differentiated liposarcoma. Therefore, on the basis of these molecular cytogenetic investigations, we conclude that parosteal liposarcoma is not a separate entity but should be categorized within the spectrum of soft-tissue ALT/WDLS.
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Affiliation(s)
- Károly Szuhai
- Department of Molecular Cell Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2300 RC, The Netherlands.
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Abstract
When connective tissue undergoes malignant transformation, glioblastomas and sarcomas arise. However, the ancient biochemical mechanisms, which are now operational in sarcomas distorted by mutations and gene fusions in misaligned chromosomes, were originally acquired by those cells that emerged during the Cambrian explosion. Preserved throughout evolution up to the genus Homo, these mechanisms dictate the apoptosis- and senescence-resistant immortality of malignant cells. A 'retroviral paradox' distinguishes human sarcomas from those of the animal world. In contrast to the retrovirally induced sarcomatous transformation of animal (avian, murine, feline and simian) cells, human sarcomas have so far failed to yield a causative retroviral isolate. However, the proto-oncogenes/oncogenes transduced from their host cells by retroviruses of animals are the same that are active in human sarcomas. Since the encoded oncoproteins arise after birth, they are recognized frequently by the immune system of the host. Immune lymphocytes that kill autologous sarcoma cells in vitro commonly fail to do so in vivo. Sarcoma vaccines generate immune T- and natural killer cell reactions; even when vaccinated patients do not show a clinical response, their tumors become more sensitive to chemotherapy. The aim of this review is to lay a solid molecular biological foundation for the conclusion that targeting the sarcoma oncogenes will result in regression of the disease.
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Affiliation(s)
- Joseph G Sinkovics
- Cancer Institute of St. Joseph's Hospital Affiliated with the HL Moffitt Cancer Center, The University of South Florida College of Medicine, Department of Medical Microbiology and Immunology, Tampa, Florida, USA.
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Craver RD, Henrich S, Kao YS. Fibrous lipoblastoma with 8q11.2 abnormality. ACTA ACUST UNITED AC 2007; 171:112-4. [PMID: 17116489 DOI: 10.1016/j.cancergencyto.2006.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Revised: 06/13/2006] [Accepted: 06/16/2006] [Indexed: 11/28/2022]
Abstract
A 3-month-old African American female infant had a rapidly growing lipoblastoma with a prominent fibrous component in the soft tissue of the left lateral knee, which recurred at 10 months. Cytogenetic analysis revealed deletion of 8(q11.2q13) with a 19(q12q13.3) insertion at that site, confirming that this is closely related to the conventional lipoblastoma. The presence of multivacuolated lipoblasts and the staining characteristics (no staining for CD99, CD34, or smooth muscle actin) distinguish this from the recently described lipofibromatosis.
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MESH Headings
- Chromosome Aberrations
- Chromosome Deletion
- Chromosomes, Human, Pair 19
- Chromosomes, Human, Pair 8
- Female
- Humans
- Infant
- Knee
- Neoplasm Recurrence, Local/genetics
- Neoplasms, Adipose Tissue/genetics
- Neoplasms, Adipose Tissue/pathology
- Neoplasms, Fibrous Tissue/genetics
- Neoplasms, Fibrous Tissue/pathology
- Translocation, Genetic
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Affiliation(s)
- Randall D Craver
- Department of Pathology, Louisiana State University Health Science Center, New Orleans, LA 70112, USA.
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Ramachandran M, Alshahrani DA, Umadevi KR. Lipoblastoma and infantile lipoma. Ann Saudi Med 2006; 26:486-7. [PMID: 17146210 PMCID: PMC6074329 DOI: 10.5144/0256-4947.2006.486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Sayagués JM, Tabernero MD, Maíllo A, Trelles O, Espinosa AB, Sarasquete ME, Merino M, Rasillo A, Vera JF, Santos-Briz A, de Alava E, Garcia-Macias MC, Orfao A. Microarray-Based Analysis of Spinal versus Intracranial Meningiomas: Different Clinical, Biological, and Genetic Characteristics Associated with Distinct Patterns of Gene Expression. J Neuropathol Exp Neurol 2006; 65:445-54. [PMID: 16772868 DOI: 10.1097/01.jnen.0000229234.13372.d8] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
It has long been recognized that spinal meningiomas show particular clinical and histological features. Here, we compare the clinico-biological characteristics as well as the genetic abnormalities and patterns of gene expression of spinal and intracranial meningiomas. Fourteen spinal and 141 intracranial meningioma patients were analyzed at diagnosis. In all tumors, interphase fluorescence in situ hybridization (iFISH) studies were performed for the detection of quantitative abnormalities for 11 different chromosomes. Additionally, microarray analyses were performed on a subgroup of 18 histologically benign meningiomas (7 spinal and 11 intracranial). Upon comparison with intracranial tumors, spinal meningiomas showed a marked predominance of psammomatous and transitional tumors (p = 0.001), together with a higher proportion of cases displaying a single tumor cell clone by iFISH (p = 0.004). In 86% of the spinal versus 56% of the intracranial tumors (p = 0.01), the ancestral tumor cell clone detected showed either absence of any chromosomal abnormality or monosomy 22/22q- alone. Analysis of gene expression profiles showed differential expression between spinal and intracranial meningiomas for a total of 1555 genes, 35 of which allowed a clear distinction between both tumor types. Most of these 35 genes (n = 30) showed significantly higher expression among spinal tumors and corresponded to genes involved in signal transduction pathways, which did not show a significantly different expression according to tumor histopathology. In summary, we show the occurrence of unique patterns of genetic abnormalities and gene expression profiles in spinal as compared to intracranial meningiomas that provide new insights into the molecular pathways involved in the tumorigenesis and progression of spinal meningiomas, and could help explain their particular clinical and histological features.
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Affiliation(s)
- José María Sayagués
- Servicio General de Citometría, Departamento de Medicina and Centro de Investigación del Cáncer, Universidad de Salamanca, Salamanca, Spain
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Abstract
BACKGROUND Proteus syndrome is a rare overgrowth disorder that is generally progressive, but the natural history of the skin lesions is not known. OBJECTIVE Our purpose was to document the evolution of 4 common skin lesions in 16 patients with Proteus syndrome. RESULTS Most epidermal nevi and vascular malformations were reported to appear in the first month of life and had little tendency for expansion or development of additional lesions. Subcutaneous lipomas and cerebriform connective tissue nevi were commonly noted in the first year of life, but not in the first month. Most patients reported that subcutaneous lipomas and cerebriform connective tissue nevi progressively increased in size, and in most patients additional lesions developed at new locations. Of the 4 types of skin lesions, plantar cerebriform connective tissue nevi were most frequently cited as a source of symptoms. CONCLUSION Skin lesions of Proteus syndrome may not appear until later infancy or early childhood, making it difficult to diagnose in young children.
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Affiliation(s)
- James V Twede
- Department of Dermatology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814, USA
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Gebhart E. Double minutes, cytogenetic equivalents of gene amplification, in human neoplasia - a review. Clin Transl Oncol 2006; 7:477-85. [PMID: 16373058 DOI: 10.1007/bf02717000] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Double minutes are tiny spherical chromatin bodies of a few mega-base pairs of size which are found occasionally in hematopoietic neoplasia and more or less often in human solid tumors. They have been associated with worse prognosis and poor outcome of the malignancies where present. With the beginning era of molecular cytogenetics they could be defined as cytogenetic equivalents of amplified DNA sequences. The identification of involved chromosomal segments and their molecular nature led to the development of molecular genetic techniques for a rapid and reliable detection of prognostically important oncogene amplifications in human tumors and,as a consequence, to gene-targeted therapy.
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Affiliation(s)
- Erich Gebhart
- Institute of Human Genetics, University of Erlangen-Nürnberg, Germany.
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Quilichini B, Andre N, Bouvier C, Chrestian MA, Rome A, Intagliata D, Coze C, Lena G, Zattara H. Hidden chromosomal abnormalities in pleuropulmonary blastomas identified by multiplex FISH. BMC Cancer 2006; 6:4. [PMID: 16396677 PMCID: PMC1361803 DOI: 10.1186/1471-2407-6-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Accepted: 01/05/2006] [Indexed: 01/05/2023] Open
Abstract
Background Pleuropulmonary blastoma (PPB) is a rare childhood dysontogenetic intrathoracic neoplasm associated with an unfavourable clinical behaviour. Cases presentation We report pathological and cytogenetic findings in two cases of PPB at initial diagnosis and recurrence. Both tumors were classified as type III pneumoblastoma and histological findings were similar at diagnosis and relapse. In both cases, conventional cytogenetic techniques revealed complex numerical and structural chromosomal abnormalities. Molecular cytogenetic analysis (interphase/metaphase FISH and multicolor FISH) identified accurately chromosomal aberrations. In one case, TP53 gene deletion was detected on metaphase FISH. To date, only few cytogenetic data have been published about PPB. Conclusion The PPB genetic profile remains to be established and compared to others embryonal neoplasia. Our cytogenetic data are discussed reviewing cytogenetics PPBs published cases, illustrating the contribution of multicolor FISH in order to identify pathogenetically important recurrent aberrations in PPB.
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Affiliation(s)
- Benoit Quilichini
- Département de Génétique Médicale – Laboratoire de Cytogénétique Hémato-Oncologique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Nicolas Andre
- Département d'Oncologie Pédiatrique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
- FRE-Centre National de la Recherche Scientifique 2737, UFR de Pharmacie, Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Corinne Bouvier
- Département d'Anatomopathologie, CHU – Hôpital d'Adultes « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Marie-Anne Chrestian
- Département d'Anatomopathologie, CHU – Hôpital d'Adultes « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Angelique Rome
- Département d'Oncologie Pédiatrique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Dominique Intagliata
- Département de Génétique Médicale – Laboratoire de Cytogénétique Hémato-Oncologique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Carole Coze
- Département d'Oncologie Pédiatrique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Gabriel Lena
- Département de Chirurgie Pédiatrique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Helene Zattara
- Département de Génétique Médicale – Laboratoire de Cytogénétique Hémato-Oncologique, CHU – Hôpital d'Enfants « La Timone », Bd Jean Moulin, 13385 Marseille Cedex 5, France
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