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Fichtner A, Marx A, Ströbel P, Bremmer F. Primary germ cell tumours of the mediastinum: A review with emphasis on diagnostic challenges. Histopathology 2024; 84:216-237. [PMID: 37994540 DOI: 10.1111/his.15090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/12/2023] [Accepted: 10/20/2023] [Indexed: 11/24/2023]
Abstract
This article will review current aspects of the histopathological, immunohistochemical and molecular analysis of primary mediastinal germ cell tumours (PMGCTs) as well as their aetiological, epidemiological, clinical and therapeutic features. PMGCTs represent an important differential diagnosis in the spectrum of mediastinal tumours, and their diagnosis is usually made on small tissue samples from core needle biopsies in combination with diagnostic imaging and serum tumour markers. As in lymphomas, a small biopsy is often the only viable tumour sample available from these patients, as they receive chemotherapy prior to eventual surgical resection. Pathologists therefore need to apply an efficient combination of immunohistochemical markers to confirm the diagnosis of a PMGCT and to exclude morphological mimics.
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Affiliation(s)
- Alexander Fichtner
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Alexander Marx
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Felix Bremmer
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
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2
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Sohn A, Moran CA. Primary mediastinal germ cell tumors. Semin Diagn Pathol 2023; 40:37-46. [PMID: 35717316 DOI: 10.1053/j.semdp.2022.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/09/2022] [Indexed: 01/28/2023]
Abstract
Mediastinal germ cell tumors share similar histopathological, immunohistochemical, and molecular features with their counterparts in the gonads. Therefore, proper clinical and radiological evaluation of patients with an anterior mediastinal mass becomes essential in the final interpretation of these tumors. The gold standard for the diagnosis of these tumors remains histopathological evaluation. However, immunohistochemical stains and molecular studies also provide an aid in cases in which the histology is not typical. It is also important to keep in mind that a small mediastinoscopic biopsy may not be representative of the entire neoplasm. In this review, we will provide our perspective regarding histopathological diagnosis, staging, immunohistochemical and molecular profile, and briefly family of tumors address pertinent epidemiological, clinical and treatment options. However, the main emphasis is to review the process of pathological assessment in pre and post-treated tumors. Knowledge of the different growth patterns and histological associations is important, mainly when confronted with mediastinoscopic biopsies, which ultimately will determine treatment options.
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Affiliation(s)
- Aaron Sohn
- Departments of Pathology, The University of Texas, M D Anderson Cancer Center, Houston, TX, USA
| | - Cesar A Moran
- Departments of Pathology, The University of Texas, M D Anderson Cancer Center, Houston, TX, USA.
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3
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Zukin M, Alonso JFS, Costa MADLD, Silva MLM. Tumor germinativo extra-gonadal e síndrome de Klinefelter - Relato de caso. REVISTA BRASILEIRA DE CANCEROLOGIA 2022. [DOI: 10.32635/2176-9745.rbc.1996v42n4.2904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Muitos relatos vêm sugerindo a associação entre a síndrome de Klinefelter e o tumor germinativo. Um risco elevado de tumor germinativo extragonadal (mediastinal) ocorre a partir da adolescência até 30 anos. O autor apresenta ocaso de um jovem de 19 anos de idade com sintomas respiratórios, massa torácica e características clínicas de síndrome de Klinefelter. O cariótipo do sangue periférico foi de 47 XXY e o estudo da lesão torácica foi de teratoma imaturo O paciente foi tratado com quimioterapia combinada seguida de toracotomia, estando em remissão completa há seis anos após o diagnóstico. Este estudo discute as características clínicas e laboratoriais dos pacientes com tumor germinativo 235 extragonadal associado a síndrome de Klinefelter, e sua participação na gênese dos tumores de células germinativas.
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4
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Liu KX, Sethi RV, Pulsifer MB, D'Gama AM, LaVally B, Ebb DH, Tarbell NJ, Yock TI, MacDonald SM. Clinical outcomes of pediatric patients with autism spectrum disorder and other neurodevelopmental disorders and intracranial germ cell tumors. Pediatr Blood Cancer 2021; 68:e28935. [PMID: 33694260 DOI: 10.1002/pbc.28935] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/11/2021] [Accepted: 01/18/2021] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Intracranial germ cell tumors (IGCTs) are rare tumors of the central nervous system with peak incidence around puberty. Given the developmental origins of IGCTs, we investigated the prevalence of neurodevelopmental disorders (NDDs) in patients with IGCTs and characterized outcomes for patients with NDD and IGCTs. METHODS A retrospective review of medical records was conducted for 111 patients diagnosed with IGCTs between 1998 and 2018 and evaluated at the Massachusetts General Hospital. Kaplan-Meier method and log-rank test was used for survival analyses. Cox regression analyses were performed for parameters associated with progression-free survival (PFS). RESULTS Median age at IGCT diagnosis was 12.8 years (range: 4.3-21.7) and median follow-up was 6.5 years (range: 0.2-20.5). Eighteen patients were diagnosed with NDDs prior to IGCT diagnosis, including five patients with autism spectrum disorder (ASD). Of the 67 patients with pure germinomas, four (6.0 %) had prior ASD diagnoses. Patients with NDD had significantly inferior PFS in the nongerminomatous germ cell tumor (NGGCT) cohort. On univariate and multivariable analyses, craniospinal irradiation (CSI) was significantly associated with improved PFS in the NGGCT cohort. CONCLUSIONS Our study found an ASD prevalence in the pure germinoma cohort more than threefold greater than the national prevalence, suggesting an association between ASD and pure germinomas. Furthermore, patients with NDD and NGGCT had worse PFS, possibly due to fewer patients with NDD receiving CSI. Future prospective studies with larger cohorts are needed to examine associations between NDDs and IGCTs, and further characterize outcomes for patients with NDDs and IGCTs.
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Affiliation(s)
- Kevin X Liu
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Roshan V Sethi
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Margaret B Pulsifer
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Alissa M D'Gama
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Beverly LaVally
- Department of Pediatric Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - David H Ebb
- Department of Pediatric Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Nancy J Tarbell
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Torunn I Yock
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Shannon M MacDonald
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
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5
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To Be or Not to Be a Germ Cell: The Extragonadal Germ Cell Tumor Paradigm. Int J Mol Sci 2021; 22:ijms22115982. [PMID: 34205983 PMCID: PMC8199495 DOI: 10.3390/ijms22115982] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 02/06/2023] Open
Abstract
In the human embryo, the genetic program that orchestrates germ cell specification involves the activation of epigenetic and transcriptional mechanisms that make the germline a unique cell population continuously poised between germness and pluripotency. Germ cell tumors, neoplasias originating from fetal or neonatal germ cells, maintain such dichotomy and can adopt either pluripotent features (embryonal carcinomas) or germness features (seminomas) with a wide range of phenotypes in between these histotypes. Here, we review the basic concepts of cell specification, migration and gonadal colonization of human primordial germ cells (hPGCs) highlighting the analogies of transcriptional/epigenetic programs between these two cell types.
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6
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Williams LA, Pankratz N, Lane J, Krailo M, Roesler M, Richardson M, Frazier AL, Amatruda JF, Poynter JN. Klinefelter syndrome in males with germ cell tumors: A report from the Children's Oncology Group. Cancer 2018; 124:3900-3908. [PMID: 30291793 DOI: 10.1002/cncr.31667] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/25/2018] [Accepted: 06/04/2018] [Indexed: 11/05/2022]
Abstract
BACKGROUND Males with Klinefelter syndrome (KS) (47,XXY) may be more likely to develop germ cell tumors (GCTs), particularly mediastinal GCTs. To date, there are no reports characterizing the prevalence of KS among male GCT cases. METHODS The authors used array genotyping data from a Children's Oncology Group epidemiology study to estimate the prevalence of KS in males with GCTs (433 males aged birth-19 years). Using Fisher's exact tests, the authors examined differences in age at diagnosis, race/ethnicity, tumor location and histology, and several birth characteristics between cases of KS-GCT and GCT cases without chromosomal abnormalities. Using publicly available data, the authors estimated the 1-year risk, risk ratio, and corresponding 95% confidence interval of GCTs among KS cases. RESULTS Based on analysis of array genotyping data, 3% of male GCT cases (13 cases) had KS. The additional X chromosome was of maternal origin in 7 of the 13 cases. Of these 13 KS cases, 5 of 9 KS-GCT cases with parental questionnaire data (56%) reported a diagnosis of KS. No significant differences were observed with regard to patient or birth characteristics between KS-GCT and non-KS-GCT cases. KS-GCT cases were significantly more likely to be diagnosed with mediastinal tumors than non-KS-GCT cases (P<.01). The authors estimated the risk of developing a GCT among males with KS to be 0.00025, or 1 per 4000 males (risk ratio, 18.8; 95% confidence interval, 11.7-30.0). CONCLUSIONS Compared with males without chromosomal abnormalities, males with KS are more likely to be diagnosed with a mediastinal GCT. The presence of KS should be considered in males with a diagnosis of mediastinal GCT. In the current study, the authors report that approximately one-third of males with mediastinal germ cell tumors have Klinefelter syndrome, and therefore screening of these individuals for the syndrome may be warranted. Males with Klinefelter syndrome are 19 times as likely as males without Klinefelter syndrome to develop germ cell tumors.
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Affiliation(s)
- Lindsay A Williams
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Nathan Pankratz
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - John Lane
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - Mark Krailo
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Michelle Roesler
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Michaela Richardson
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - A Lindsay Frazier
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston, Massachusetts
| | - James F Amatruda
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas.,Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas.,Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Jenny N Poynter
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota.,Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
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7
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Le Fèvre C, Vigneron C, Schuster H, Walter A, Marcellin L, Massard G, Lutz P, Noël G. Metastatic mediastinal mature teratoma with malignant transformation in a young man with an adenocarcinoma in a Klinefelter's syndrome: Case report and review of the literature. Cancer Radiother 2018; 22:255-263. [DOI: 10.1016/j.canrad.2017.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 09/18/2017] [Accepted: 10/19/2017] [Indexed: 11/25/2022]
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8
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Villanueva MJ, Navarro F, Sánchez A, Provencio M, Bonilla F, España P. Testicular Germ Cell Tumor and down Syndrome. TUMORI JOURNAL 2018; 86:431-3. [PMID: 11130577 DOI: 10.1177/030089160008600514] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The association between Down syndrome and testicular germ cell tumors may be more frequent than expected according to chance, but few reports have focused on this excess. We report two cases of this association and review the English medical literature.
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Affiliation(s)
- M J Villanueva
- Medical Oncology Service, University Hospital Clínica Puerta De Hierro, Madrid, Spain.
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9
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Hsu CW, Wang JC, Liao WI, Chien WC, Chung CH, Tsao CH, Wu YF, Liao MT, Tsai SH. Association between malignancies and Marfan syndrome: a population-based, nested case-control study in Taiwan. BMJ Open 2017; 7:e017243. [PMID: 29042385 PMCID: PMC5652471 DOI: 10.1136/bmjopen-2017-017243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE Marfan syndrome (MFS) involves a deficiency of the structural extracellular matrix component fibrillin-1 and overactivation of the transforming growth factor-β (TGF-β) signalling pathway. The TGF-β signalling pathway also actively participates in malignant transformation. Although anecdotal case reports have suggested associations between MFS/MFS-like conditions and several haematological and solid malignancies, such associations have not been thoroughly evaluated in large-scale studies. We sought to use a nationwide healthcare insurance claim database to evaluate whether patients with MFS are at increased risk of malignancy. PATIENTS AND METHODS We conducted a nested case-control analysis using a database extracted from Taiwan's National Health Insurance Research Database. All medical conditions for each case and control were categorised using the International Classification of Diseases, 9th Revision classifications. ORs and 95% CIs for associations between MFS and malignancies were estimated using conditional logistic regression and adjusted for comorbidities. RESULTS Our analyses included 1 153 137 cancer cases and 1 153 137 propensity score-matched controls. Relative to other subjects, patients with MFS had a significantly higher risk of having a malignancy (adjusted OR 3.991) and hypertension (adjusted OR 1.964) and were significantly more likely to be men. Malignancies originating from the head and neck and the urinary tract were significantly more frequent among patients with MFS than among subjects without MFS. CONCLUSION Patients with MFS are at increased risk of developing various malignancies. Healthcare professionals should be aware of this risk when treating such patients, and increased cancer surveillance may be necessary for these patients.
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Affiliation(s)
- Chin-Wang Hsu
- Department of Emergency Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Emergency and Critical Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Jen-Chun Wang
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wen-I Liao
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Wu-Chien Chien
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
| | - Chi-Hsiang Chung
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
- Taiwanese Injury Prevention and Safety Promotion Association, Taoyuan, Taiwan
| | - Chang-Huei Tsao
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Yung-Fu Wu
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Min-Tser Liao
- Department of Pediatrics, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan
| | - Shih-Hung Tsai
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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10
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Cierna Z, Mego M, Jurisica I, Machalekova K, Chovanec M, Miskovska V, Svetlovska D, Kalavska K, Rejlekova K, Kajo K, Mardiak J, Babal P. Fibrillin-1 (FBN-1) a new marker of germ cell neoplasia in situ. BMC Cancer 2016; 16:597. [PMID: 27487789 PMCID: PMC4973050 DOI: 10.1186/s12885-016-2644-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 07/28/2016] [Indexed: 01/09/2023] Open
Abstract
Background Germ cell neoplasia in situ (GCNIS), is preinvasive stage of testicular germ cell tumours (TGCTs). Fibrillins, which are integral components of microfibrils are suggested to be involved in cancer pathogenesis and maintenance of embryonic stem cells pluripotency. The aim of this study was to examine fibrillin-1 (FBN-1) expression in TGCTs patients. Methods Surgical specimens from 203 patients with TGCTs were included into the translational study. FBN-1 expression was evaluated in the tumour tissue, in GCNIS and in adjacent non-neoplastic testicular tissue in all available cases. Tissue samples were processed by the tissue microarray method. FBN-1 was detected by immunohistochemistry using goat polyclonal antibody and the expression was evaluated by the multiplicative quickscore (QS). Results The highest FBN-1 positivity was detected in GCNIS (mean QS = 11.30), with overexpression of FBN-1 (QS >9) in the majority (77.1 %) of cases. Expression of FBN-1 in all subtypes of TGCTs was significantly lower in comparison to expression in GCNIS (all p <0.001). Seminoma had significantly higher expression compared to EC, ChC and TER (all p <0.05), but not to YST (p = 0.84). In non-neoplastic testicular tissue the FBN-1 positivity was very low (mean QS = 0.02). Sensitivity, specificity, positive and negative predictive value of FBN-1 expression for diagnosis of GCNIS were 97.1, 98.8, 98.6 and 97.7 %. Conclusions FBN-1 is overexpressed in TGCTs and especially in GCNIS when compared to non-neoplastic testicular tissue in patients with germ cell tumors and could be involved in germ cell neoplasia in situ development.
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Affiliation(s)
- Z Cierna
- Department of Pathology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - M Mego
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, Bratislava, Slovakia. .,Translational Research Unit, Faculty of Medicine, Comenius University, Bratislava, Slovakia. .,National Cancer Institute, Bratislava, Slovakia. .,2nd Department of Oncology, Faculty of Medicine, National Cancer Institute, Comenius University, Klenova 1, 833 10, Bratislava, Slovak Republic.
| | - I Jurisica
- Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Canada
| | - K Machalekova
- St. Elisabeth Cancer Institute, Bratislava, Slovakia
| | - M Chovanec
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,National Cancer Institute, Bratislava, Slovakia
| | - V Miskovska
- St. Elisabeth Cancer Institute, Bratislava, Slovakia.,1st Department of Oncology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - D Svetlovska
- Translational Research Unit, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,National Cancer Institute, Bratislava, Slovakia
| | - K Kalavska
- Translational Research Unit, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,National Cancer Institute, Bratislava, Slovakia
| | - K Rejlekova
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,National Cancer Institute, Bratislava, Slovakia
| | - K Kajo
- St. Elisabeth Cancer Institute, Bratislava, Slovakia
| | - J Mardiak
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,National Cancer Institute, Bratislava, Slovakia
| | - P Babal
- Department of Pathology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
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11
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Nistal M, Paniagua R, González-Peramato P, Reyes-Múgica M. Perspectives in Pediatric Pathology, Chapter 16. Klinefelter Syndrome and Other Anomalies in X and Y Chromosomes. Clinical and Pathological Entities. Pediatr Dev Pathol 2016; 19:259-77. [PMID: 25105890 DOI: 10.2350/14-06-1512-pb.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Manuel Nistal
- 1 Department of Pathology, Hospital La Paz, Universidad Autónoma de Madrid, Calle Arzobispo Morcillo No. 2, Madrid 28029, Spain
| | - Ricardo Paniagua
- 2 Department of Cell Biology, Universidad de Alcala, Madrid, Spain
| | - Pilar González-Peramato
- 1 Department of Pathology, Hospital La Paz, Universidad Autónoma de Madrid, Calle Arzobispo Morcillo No. 2, Madrid 28029, Spain
| | - Miguel Reyes-Múgica
- 3 Department of Pathology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, One Children's Hospital Drive, 4401 Penn Avenue, Pittsburgh, PA 15224, USA
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12
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Nistal M, Paniagua R, González-Peramato P, Reyes-Múgica M. Perspectives in Pediatric Pathology, Chapter 17. Other Hypergonadotropic Hypogonadisms. Pediatr Dev Pathol 2016; 19:278-90. [PMID: 26809023 DOI: 10.2350/16-01-1755-pb.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Manuel Nistal
- 1 Department of Pathology, Hospital La Paz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Ricardo Paniagua
- 2 Department of Cell Biology, Universidad de Alcala, Madrid, Spain
| | | | - Miguel Reyes-Múgica
- 3 Department of Pathology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
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13
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Ulbright TM, Young RH. Gonadoblastoma and selected other aspects of gonadal pathology in young patients with disorders of sex development. Semin Diagn Pathol 2014; 31:427-40. [DOI: 10.1053/j.semdp.2014.07.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Winer DA, Winer S, Rotstein L, Asa SL, Mete O. Villous papillary thyroid carcinoma: a variant associated with marfan syndrome. Endocr Pathol 2012; 23:254-9. [PMID: 22847364 DOI: 10.1007/s12022-012-9219-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Marfan syndrome (MFS) is an autosomal dominant hereditary disorder of connective tissue associated with perturbations in transforming growth factor β (TGF-β) biology, most often due to mutations in FBN1 gene that encodes fibrillin-1. To our knowledge, there is no known association of MFS with thyroid carcinoma. We report a 46-year-old man with known history of MFS who developed an unusual histological variant of papillary thyroid carcinoma. The tumor exhibited a widely invasive florid papillary growth pattern with prominent long villous fronds. Immunohistochemical and molecular analysis revealed a BRAF(V600E) mutation, evidence of aggressive biomarker expression (positivity for HBME-1, cytokeratin 19, galectin-3 and cyclin D1, and loss of p27), and changes associated with TGF-β-related epithelial-to-mesenchymal transition with active phospho-SMAD signaling. We introduce a unique histological pattern of papillary thyroid carcinoma that is associated with MFS. The combination of BRAF(V600E) mutation in the setting of altered TGF-β signaling and weak connective tissue integrity associated with MFS may cooperate and possibly be responsible to form this unique villous morphology with epithelial-to-mesenchymal transition and invasive growth.
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Affiliation(s)
- Daniel A Winer
- Department of Pathology, University Health Network, Toronto, ON, Canada
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15
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Goede J, Weijerman ME, Broers CJ, de Winter JP, van der Voort-Doedens LM, Hack WW. Testicular Volume and Testicular Microlithiasis in Boys With Down Syndrome. J Urol 2012; 187:1012-7. [DOI: 10.1016/j.juro.2011.10.167] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Indexed: 10/14/2022]
Affiliation(s)
- Joery Goede
- Department of Pediatrics, Medical Center Alkmaar, Alkmaar, The Netherlands
| | | | - Chantal J.M. Broers
- Department of Pediatrics, VU University Medical Center, Amsterdam, The Netherlands
| | | | | | - Wilfried W.M. Hack
- Department of Pediatrics, Medical Center Alkmaar, Alkmaar, The Netherlands
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16
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Martin L, Rashid T, Ruston M. Bilateral orchidectomy for germ cell tumours in cryptorchid testis in Down's syndrome: a case report. JOURNAL OF CLINICAL UROLOGY 2012. [DOI: 10.1016/j.bjmsu.2012.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | | | - M Ruston
- Watford General Hospital, Herts, UK
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17
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Heerema-McKenney A, Bowen J, Hill DA, Suster S, Qualman SJ. Protocol for the Examination of Specimens From Pediatric and Adult Patients With Extragonadal Germ Cell Tumors. Arch Pathol Lab Med 2011; 135:630-9. [DOI: 10.5858/2010-0405-cp.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Roopnariane A, Freed RJ, Price S, Fox EJ, Ritty TM. Osteosarcoma in a Marfan patient with a novel premature termination codon in the FBN1 gene. Connect Tissue Res 2011; 52:157-65. [PMID: 20672986 DOI: 10.3109/03008207.2010.500430] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Osteosarcoma is a malignant neoplasm of mesenchymal origin that is presumed to arise from osteoblasts. Considered a rare tumor, approximately 1000 cases of osteosarcoma are diagnosed in the United States each year, and osteosarcoma of the foot is rarer still. Marfan syndrome (MFS) is a rare genetic disorder that affects 1 in 5000 individuals and is caused by mutations in the fibrillin 1 (FBN1) gene. MFS phenotype affects several body systems, including soft connective tissue and bone. Here we report, for the first time, an individual with MFS that was treated for osteosarcoma. Surgically resected tissue was used to initiate an osteosarcoma cell line (PSU-OS-M) that exhibits attachment-independent growth and loss of contact inhibition in vitro. Genomic DNA was isolated from the tumor cells, and primers that anneal to intronic regions were used to amplify and sequence all 65 coding exons of the FBN1 gene. A two base pair insertion that results in a novel premature termination codon (PTC) was found in exon 52. Protein from the normal allele is detectable in PSU-OS-M cell-conditioned medium, but protein from the mutant allele was not detectable. Immunofluorescent microscopy demonstrates that PSU-OS-M cells can assemble fibrillin 1 microfibrils in culture, and fibronectin assembly is normal. As such, the PSU-OS-M cell line is to our knowledge the first oncogenically transformed cell line with a mutant fibrillin gene and may serve as a useful tool for studying molecular mechanisms of MFS and nonsense-mediated decay.
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Affiliation(s)
- Adriana Roopnariane
- Department of Orthopaedics, Division of Musculoskeletal Sciences, Penn State College of Medicine, Hershey, PA 17033-0850, USA
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Satgé D, Jacobsen GK, Cessot F, Raffi F, Vekemans M. A Fetus with Down Syndrome and Intratubular Germ Cell Neoplasia. ACTA ACUST UNITED AC 2010. [DOI: 10.1080/15513819609168666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Ganmore I, Smooha G, Izraeli S. Constitutional aneuploidy and cancer predisposition. Hum Mol Genet 2009; 18:R84-93. [PMID: 19297405 DOI: 10.1093/hmg/ddp084] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Constitutional aneuploidies are rare syndromes associated with multiple developmental abnormalities and the alterations in the risk for specific cancers. Acquired somatic chromosomal aneuploidies are the most common genetic aberrations in sporadic cancers. Thus studies of these rare constitutional aneuploidy syndromes are important not only for patient counseling and clinical management, but also for deciphering the mechanisms by which chromosomal aneuploidy affect cancer initiation and progression. Here we review the major constitutional aneuploidy syndromes and suggest some general mechanisms for the associated cancer predisposition.
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21
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Treatment experiences of testicular cancer in Hispanic patients with Down’s syndrome at the National Cancer Institute of Mexico. Clin Transl Oncol 2008; 10:768-71. [DOI: 10.1007/s12094-008-0286-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Reimann-Berg N, Escobar HM, Nolte I, Bullerdiek J. Testicular tumor in an XXY dog. ACTA ACUST UNITED AC 2008; 183:114-6. [DOI: 10.1016/j.cancergencyto.2008.02.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 02/06/2008] [Accepted: 02/15/2008] [Indexed: 11/30/2022]
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23
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Krupnick AS, Shrager JB. Mediastinum. Oncology 2007. [DOI: 10.1007/0-387-31056-8_39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Pediatric germ cell tumors are a diverse group of neoplasms with variable clinical behaviors, depending upon the age and site of presentation. Most result from sporadic mutations, although environmental exposures and other genetic aberrations may play a role. Platinum-based chemotherapy has dramatically improved the event-free and overall survival outcomes of pediatric patients with malignant germ cell tumors over the past two decades. Prognosis is dependent on tumor stage and location. Patients with gonadal germ cell tumors have at least a 95% 5-year survival for early stage disease and at least a 85% 5-year survival for advanced stages. In general, extragonadal germ cell tumors carry a poorer prognosis with mediastinal location having the worst outcomes (70% 4-year survival). Current trials are focused on maintaining similar excellent outcomes while reducing morbidity by reducing the dose and duration of chemotherapy. Cytogenetic research studies have found chromosomal aberrations specific to some of these tumors that may serve as prognosticators and even direct therapy.
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Affiliation(s)
- Zachary Horton
- Helen Devos Children's Hospital, Grand Rapids Medical Education and Research Center, Michigan State University, Grand Rapids, MI 49503, USA
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25
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KURODA NAOTO, AMANO SHINJI, SHIOTSU TOMOYUKI, TAMURA MASATO, HES ONDREJ, MICHAL MICHAL, LEE GANGHONG. Mixed testicular germ cell tumor in an adult with cryptorchidism and Down's syndrome. APMIS 2007; 115:1292-5. [DOI: 10.1111/j.1600-0643.2007.00497.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Patients who have a poor prognosis can be identified at presentation by well-defined prognostic factors. Prognostic groups as defined by the International Germ Cell Consensus Classification should be used in the clinic, in clinical trials, and when reporting results. No systemic treatment has been shown to improve outcome compared with four cycles of chemotherapy composed of bleomycin, etoposide, and cisplatin, which remains the standard of care. Surgery to resect residual masses after chemotherapy and in the salvage setting is a vital component of optimal care. The best outcomes occur with treatment at a center with experience and expertise in their management. Further major improvements are likely to require novel systemic therapies rather than modifications of existing approaches.
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Affiliation(s)
- Guy C Toner
- University of Melbourne, Melbourne, Australia; Department of Medical Oncology, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia.
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Hafeez S, Sharma RA, Huddart RA, Dearnaley DP, Horwich A. Challenges in treating patients with Down's syndrome and testicular cancer with chemotherapy and radiotherapy: The Royal Marsden experience. Clin Oncol (R Coll Radiol) 2007; 19:135-42. [PMID: 17355110 DOI: 10.1016/j.clon.2006.10.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIMS With a life expectancy similar to the general population, greater numbers of patients with Down's syndrome are being diagnosed with testicular cancer. Learning difficulties and medical co-morbidity are common in this patient population and may lead to non-standard oncological treatment. We aimed to identify and discuss management challenges in the treatment of these patients with chemotherapy and radiotherapy and report their clinical outcome. MATERIALS AND METHODS The Royal Marsden Hospital urology database was searched from 1982 to 2005 to identify all cases of patients with Down's syndrome and histologically confirmed testicular cancer who were referred for consideration of chemotherapy or radiotherapy. RESULTS Nine patients were identified, of whom eight received chemotherapy or radiotherapy. Two patients had bilateral tumours and four had crypto-orchidism. At the time of diagnosis, the patients were 21-50 years of age. Of the 11 tumours identified, nine were seminomas and two were malignant teratoma undifferentiated. Five patients presented with stage I disease, of whom three received carboplatin and one received para-aortic radiotherapy as adjuvant treatment. Three patients presented with stage II disease, of whom two were treated with carboplatin and one received combination chemotherapy followed by radiotherapy. One patient with stage IV disease was treated with carboplatin. Five of nine patients relapsed within 30 months, of whom three were successfully salvaged with radiotherapy and one with combination chemotherapy. CONCLUSION After standard and non-standard therapy for seminoma, the relapse rate for patients in our cohort was high. Since relapsed disease is much more difficult to manage with combination chemotherapy on account of respiratory, cardiac and renal co-morbidity, adequate initial treatment is advised. Consideration of psycho-social issues and the multiple treatment strategies available is vital in delivering optimal care to patients with Down's syndrome and testicular cancer.
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Affiliation(s)
- S Hafeez
- Radiotherapy Department, Royal Marsden Hospital NHS Trust, Downs Road, Sutton, Surrey SM2 5PT, UK
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McKenney JK, Heerema-McKenney A, Rouse RV. Extragonadal germ cell tumors: a review with emphasis on pathologic features, clinical prognostic variables, and differential diagnostic considerations. Adv Anat Pathol 2007; 14:69-92. [PMID: 17471115 DOI: 10.1097/pap.0b013e31803240e6] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Extragonadal germ cell tumors (GCTs) are relatively uncommon, but represent 1% to 5% of all GCTs. Their morphology varies widely and includes mature teratoma, immature teratoma, seminoma, yolk sac tumor, embryonal carcinoma, choriocarcinoma, and mixed GCTs. Noncentral nervous system extragonadal GCTs are found in a variety of anatomic locations, but most commonly affect the mediastinum and sacrococcygeal region. Predicting behavior in these tumors can be confusing because it is based on a combination of varying factors including patient age, histologic subtype, anatomic site, and clinical stage. This review attempts to dissect these issues by separating the discussion into 3 age groups: neonatal (congenital), children (prepubertal), and adult (postpubertal). Within each individual age group, we cover the significance of anatomic site, morphology, and staging parameters. In addition, we discuss the spectrum of associated secondary malignancies and their impact on patient outcome. Finally, we provide a detailed survey of differential diagnostic considerations grouped by anatomic site.
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Affiliation(s)
- Jesse K McKenney
- Department of Pathology, University of Arkansas for Medical Sciences, USA
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Völkl TMK, Langer T, Aigner T, Greess H, Beck JD, Rauch AM, Dörr HG. Klinefelter syndrome and mediastinal germ cell tumors. Am J Med Genet A 2006; 140:471-81. [PMID: 16470792 DOI: 10.1002/ajmg.a.31103] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED Precocious puberty is not a typical manifestation of patients with Klinefelter syndrome (KS). However, there is an increased incidence of mediastinal germ cell tumors (M-GCT) in KS, whereas the discussion of a generally higher tumor risk in this condition is still controversial. A rare subgroup of KS patients consists of prepubertal children with precocious puberty due to human chorionic gonadotropin (hCG)-producing M-GCTs. We present clinical data on a boy with KS and sexual precocity, and summarize the published data on 12 boys with KS out of 54 cases of KS and M-GCT. CLINICAL REPORT an 8.5-year-old boy presented with signs of precocious puberty. Laboratory analyses (suppressed gonadotropins, elevated testosterone) and thoracic CT demonstrated a beta-human chorionic gonadotropin (beta-hCG) and alpha(1)-feto protein (alpha-FP) secreting mediastinal tumor. Histological analysis showed a mixed germ cell tumor comprising choriocarcinoma (CH), embryonal carcinoma (EC), mature teratoma (MT), and yolk sac tumor (YS). He was successfully treated by surgery and adjuvant chemotherapy. Epianalysis of published cases: all KS patients (n = 12), age 4-9 years, presented with precocious sexual development (PP), whereas the older ones showed thorax-associated symptoms, mainly chest pain, dyspnea, and cough. The histological distribution was also age-dependent with mixed germ cell tumors predominantly in younger patients. Thus, M-GCTs are strongly associated with precocious puberty in young boys with KS. Therefore, a karyotype analysis should be included in the clinical work-up of boys with precocious puberty and M-GCT. There is still no convincing explanation for the association of M-GCTs and KS.
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Affiliation(s)
- Thomas M K Völkl
- Hospital for Children and Adolescents, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany
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Chew G, Hutson J. Incidence of Cryptorchidism and Ascending Testes in Trisomy 21: A 10 Year Retrospective Review. J Urol 2006. [DOI: 10.1016/s0022-5347(05)00556-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- G. Chew
- Department of General Surgery, Royal Children’s Hospital, Melbourne and Department of Paediatrics, University of Melbourne and Douglas Stephens Surgical Research Laboratory, Murdoch Childrens Research Institute, Victoria, Australia
| | - J.M. Hutson
- Department of General Surgery, Royal Children’s Hospital, Melbourne and Department of Paediatrics, University of Melbourne and Douglas Stephens Surgical Research Laboratory, Murdoch Childrens Research Institute, Victoria, Australia
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Cools M, Honecker F, Stoop H, Veltman JD, de Krijger RR, Steyerberg E, Wolffenbuttel KP, Bokemeyer C, Lau YFC, Drop SLS, Looijenga LHJ. Maturation delay of germ cells in fetuses with trisomy 21 results in increased risk for the development of testicular germ cell tumors. Hum Pathol 2006; 37:101-11. [PMID: 16360422 DOI: 10.1016/j.humpath.2005.09.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2005] [Accepted: 09/24/2005] [Indexed: 11/23/2022]
Abstract
Trisomy 21 is associated with an increased risk for the occurrence of germ cell tumors in males. The development of these tumors is thought to be related to events in fetal life. A delay in the maturation of germ cells is one of the mechanisms that have been proposed for the development of these tumors in high-risk groups such as intersex patients. To investigate whether a delay in germ cell development also occurs in trisomy 21, we examined the gonads of 30 fetuses, neonates, and infants with trisomy 21 (19 males and 11 females) for the expression of several immunohistochemical germ cell markers throughout pregnancy and compared them with a series of 46 age-matched controls. The results of our study reveal a significant delay in germ cell development in fetuses with trisomy 21, especially in males. Prolonged expression of octamer binding transcription factor 3/4, in combination with an increased expression of testis-specific protein, Y-encoded, might have pathogenetic relevance for the development of testicular germ cell tumors in this population.
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Affiliation(s)
- Martine Cools
- Department of Pathology, Josephine Nefkens Institute, Erasmus MC-University Medical Center, Daniel den Hoed, 3000 DR Rotterdam, The Netherlands
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Abstract
Tumors of the mediastinum represent a wide diversity of disease states. The location and composition of a mass is critical to narrowing the differential diagnosis. The most common causes of an anterior mediastinal mass include the following: thymoma; teratoma; thyroid disease; and lymphoma. Masses of the middle mediastinum are typically congenital cysts, including foregut and pericardial cysts, while those that arise in the posterior mediastinum are often neurogenic tumors. The clinical sequelae of mediastinal masses can range from being asymptomatic to producing symptoms of cough, chest pain, and dyspnea. This article will review the anatomy of the mediastinum as well as the different clinical, radiographic, and prognostic features, and therapeutic options of the most commonly encountered masses.
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Affiliation(s)
- Beau V Duwe
- Department of Internal Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA
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Merks JHM, Caron HN, Hennekam RCM. High incidence of malformation syndromes in a series of 1,073 children with cancer. Am J Med Genet A 2005; 134A:132-43. [PMID: 15712196 DOI: 10.1002/ajmg.a.30603] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Constitutional molecular defects are known to play a role in oncogenesis, as shown by the increased incidence of embryonic cancers in children with Beckwith-Wiedemann syndrome (BWS) or of leukemia in children with Down syndrome. To establish the incidence and spectrum of malformation syndromes associated with childhood cancer we performed a clinical morphological examination on a series of 1,073 children with cancer. We diagnosed a syndrome in 42 patients (3.9%) and suspected the presence of a syndrome in another 35 patients (3.3%), for a total of 7.2%. This incidence of patients with a proven or suspected syndrome is high, and points to a possible association. We describe new syndrome-tumor associations in several entities: cleidocranial dysostosis (Wilms tumor), Bardet-Biedl syndrome (BBS) (acute lymphoblastic leukemia), Kabuki syndrome (neuroblastoma), LEOPARD syndrome (neuroblastoma), Poland anomaly (osteosarcoma; Hodgkin disease), and blepharophimosis epicanthus inversus syndrome (Burkitt lymphoma). Twenty of the 42 syndrome diagnoses were not recognized in the patients prior to this study, indicating that these diagnoses are commonly missed. We propose that all children with a malignancy should be examined by a clinical geneticist or a pediatrician skilled in clinical morphology to determine if the patients have a malformation syndrome.
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Affiliation(s)
- Johannes Hans M Merks
- Department of Pediatric Oncology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands.
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34
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Tsutsumi Y, Tanaka J, Minami H, Musashi M, Fukushima A, Ehira N, Kanamori H, Yamato H, Sasaki J, Funaki C, Hasegawa S, Obara S, Ogura N, Asaka M, Imamura M, Masauzi N. Acute biphenotypic leukemia and an acquired X chromosome. ACTA ACUST UNITED AC 2005; 157:94-5. [PMID: 15676158 DOI: 10.1016/j.cancergencyto.2004.05.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Chew G, Hutson JM. Incidence of cryptorchidism and ascending testes in trisomy 21: a 10 year retrospective review. Pediatr Surg Int 2004; 20:744-7. [PMID: 15517292 DOI: 10.1007/s00383-004-1290-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Children with Down syndrome have an increased risk of cryptorchidism, but the reported incidence is unclear. In a proportion of these children, the testes are within the scrotum at birth but later appear to have ascended to an ectopic position. Records of patients diagnosed with trisomy 21 who had surgery for undescended testes in two tertiary paediatric centres over a 10-year period were examined. Information on liveborn males with Down syndrome was obtained from the Victorian Genetic Registry, and then the incidence of congenital and acquired undescended testes was determined. The incidence of undescended testes in Down syndrome was found to be 6.52% (24/368), with 4.35% (16/368) being acquired undescended or ascending testes. In conclusion, there is an increased incidence of cryptorchidism in Down syndrome; in particular, there is a significant proportion of acquired undescended testes.
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Affiliation(s)
- Grace Chew
- Department of General Surgery, Royal Children's Hospital, Melbourne, Australia.
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36
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Abstract
PURPOSE We identified the urological anomalies seen in patients with Down syndrome. MATERIALS AND METHODS We reviewed the literature on Down syndrome and its associated genitourinary pathology. RESULTS Associated defects have been reported throughout the genitourinary tract. The most common renal anomalies seen are renal hypoplasia, obstructive uropathy and glomerular microcysts. Decreased creatinine clearance has also been noted. Developmental anomalies, such as megaureter and vesicoureteral reflux, have been reported. Dysfunctional voiding and urinary retention have been found in these patients. Posterior urethral valves and hypospadias have also been seen. The testicular abnormalities most frequently reported are cryptorchidism, testicular cancer and infertility. CONCLUSIONS Improved understanding and identification of the various urological anomalies associated with Down syndrome will aid in the care of these patients. In addition, an awareness of perioperative issues will further facilitate a smooth clinical course.
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Affiliation(s)
- Erica Schalow Mercer
- Department of Urology, Emory University School of Medicine, Atlanta, Georgia 30345, USA
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Beresford L, Fernandez CV, Cummings E, Sanderson S, Ming-Yu W, Giacomantonio M. Mediastinal polyembryoma associated with Klinefelter syndrome. J Pediatr Hematol Oncol 2003; 25:321-3. [PMID: 12679648 DOI: 10.1097/00043426-200304000-00011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A 4.5-year-old boy presented with isosexual precocious puberty and an anterior mediastinal mass. Surgical resection demonstrated a teratoma with foci of malignant mixed germ cell tumor elements of polyembryoma. On further investigation he was found to have Klinefelter syndrome. Most mediastinal germ cell tumors are treated with adjuvant therapy. He was managed with surgical excision alone and is well at 2 years follow-up. The rationale for this approach is discussed.
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Affiliation(s)
- Lisa Beresford
- Department of Pediatrics, Memorial University, St John's Newfoundland, Canada
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Hsiung Stripp DC, Vaughn D, Van Arsdalen K, Whittington R. Three cases of advanced seminoma and Down's syndrome: a possible association. Am J Clin Oncol 2003; 26:197-9. [PMID: 12714896 DOI: 10.1097/00000421-200304000-00020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This is a report of three cases of classic seminoma in Down's syndrome patients treated at our institution. Review of literature shows an observation of increased occurrence of testicular cancer in patients with DS, however, with no definitive association documented. A brief discussion of the possible pathogenesis is presented.
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Affiliation(s)
- Diana C Hsiung Stripp
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, 2 Donner Building, 3400 Spruce Street, Philadelphia, PA 19104, U.S.A
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Lutke Holzik MF, Sijmons RH, Sleijfer DT, Sonneveld DJA, Hoekstra-Weebers JEHM, van Echten-Arends J, Hoekstra HJ. Syndromic aspects of testicular carcinoma. Cancer 2003; 97:984-92. [PMID: 12569597 DOI: 10.1002/cncr.11155] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND In patients with hereditary or constitutional chromosomal anomalies, testicular carcinoma can develop sporadically or on the basis of an underlying hereditary genetic defect. Greater knowledge of these genetic defects would provide more insight into the molecular pathways that lead to testicular carcinoma. To the authors' knowledge, little attention has been paid to date to the comorbid occurrence of testicular carcinoma in patients with hereditary disorders or constitutional chromosomal anomalies. METHODS The authors performed a review of the literature. RESULTS Twenty-five different hereditary disorders or constitutional chromosomal anomalies have been reported in patients who developed seminomatous or nonseminomatous testicular carcinoma. CONCLUSIONS Although most of these malignancies were too rare to enable the detection of statistically significant correlations between the chromosomal/hereditary disorder and the testicular tumor, it was striking that many of the patients had also other urogenital abnormalities. Susceptibility to urogenital abnormalities seems to disrupt normal urogenital differentiation and suggests a correlation with testicular dysgenesis and, thus, also with testicular carcinoma. Other evidence of causal involvement has been found in the field of tumor cytogenetics. Some of the genes responsible for hereditary disorders have been mapped to regions that are of interest in the development of sporadic testicular carcinoma. Molecular studies on candidate genes will be required to provide definite answers. Completion of the human gene map and the availability of advanced gene arrays and bioinformatics are expected to greatly facilitate further exploration of the role of hereditary genetic defects in testicular carcinoma.
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Affiliation(s)
- Martijn F Lutke Holzik
- Department of Surgical Oncology, University Medical Center Groningen, Groningen, The Netherlands
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40
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Reuter VE. The pre and post chemotherapy pathologic spectrum of germ cell tumors. CHEST SURGERY CLINICS OF NORTH AMERICA 2002; 12:673-94. [PMID: 12471871 DOI: 10.1016/s1052-3359(02)00037-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Victor E Reuter
- Memorial Sloan-Kettering Cancer Center, Department of Pathology, 1275 York Avenue, New York, NY 10021, USA.
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41
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Okada Y, Nishikawa R, Matsutani M, Louis DN. Hypomethylated X chromosome gain and rare isochromosome 12p in diverse intracranial germ cell tumors. J Neuropathol Exp Neurol 2002; 61:531-8. [PMID: 12071636 DOI: 10.1093/jnen/61.6.531] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Twenty-five primary intracranial germ cell tumors (11 germinomas, 5 teratomas, 5 mixed teratomas-germinomas. 1 mixed choriocarcinoma-teratoma, 1 yolk sac tumor, 1 mixed yolk sac tumor-teratoma, and 1embryonal carcinoma; from 24 males and 1 female) were studied by fluorescence in situ hybridization with probes to the X and Y chromosomes, chromosome 12p, the CDKN2A/p16 gene, and chromosome 13q-loci previously noted to be altered in either intracranial or systemic germ cell tumors. An increased number of X chromosomes, typically 1 extra copy, was observed in 23 of 25 cases (92%), with methylation-sensitive PCR demonstrating that the additional X chromosomes were hypomethylated in 13 of 16 (81%) studied tumors. Five cases (20%) had increased copy numbers of 12p (including tumors with isochromosome 12p), and 3 (12%) had 13q loss. No tumors had CDKN2A/p16 deletion or mutation, and 16 of 25 (64%) were positive for p16 expression by immunohistochemistry. Genetic alterations such as isochromosome 12p, 13q loss and CDKN2A/p16 are therefore not common in intracranial germ cell tumors. However, gains of hypomethylated, active X chromosomes occur in nearly all intracranial germ cell tumors, regardless of histological subtype. Along with the observed male predominance of intracranial germ cell tumors and the predisposition in Klinefelter syndrome patients for these lesions, the data argue strongly that sex chromosome aberrations, rather than isochromosome 12p, are integral to intracranial germ cell tumorigenesis
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Affiliation(s)
- Yoshifumi Okada
- Department of Pathology and Neurosurgical Service, Massachusetts General Hospital, Harvard Medical School, Boston, USA
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Bokemeyer C, Nichols CR, Droz JP, Schmoll HJ, Horwich A, Gerl A, Fossa SD, Beyer J, Pont J, Kanz L, Einhorn L, Hartmann JT. Extragonadal germ cell tumors of the mediastinum and retroperitoneum: results from an international analysis. J Clin Oncol 2002; 20:1864-73. [PMID: 11919246 DOI: 10.1200/jco.2002.07.062] [Citation(s) in RCA: 288] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
PURPOSE To characterize the clinical and biologic features of extragonadal germ cell tumor (EGCT) and to determine the overall outcome with currently available treatment strategies. PATIENTS AND METHODS Of an unselected population of 635 consecutive patients treated from 1975 through 1996 at 11 cancer centers, 341 patients (54%) had primary mediastinal EGCT, and 283 patients (45%) had retroperitoneal EGCT. Five hundred twenty-four patients (83%) had a nonseminomatous germ cell tumor (GCT), and 104 patients (16%) had a seminomatous histology. RESULTS After platinum-based induction chemotherapy with or without secondary surgery, 141 patients (49%) with mediastinal nonseminomas (median follow-up, 19 months; range, 1 to 178 months) and 144 patients (63%) with retroperitoneal nonseminoma (median follow-up, 29 months; range, 1 to 203 months) are alive (P =.0006). In contrast, the overall survival rate for patients with a seminomatous EGCT is 88%, with no difference between patients with mediastinal or retroperitoneal tumor location (median follow-up, 49 months; range, 4 to 193 months; respective 70 months; range, 1 to 211 months). A significantly lower progression-free survival rate was found in seminoma patients treated with initial radiotherapy alone compared with chemotherapy. Nonseminomatous histology, presence of nonpulmonary visceral metastases, primary mediastinal GCT location, and elevated beta-human chorionic gonadotropin were independent prognostic factors for shorter survival. Hematologic malignancies (n = 17) occurred without exception in patients with primary mediastinal nonseminoma. Sixteen patients developed a metachronous testicular cancer despite the use of platinum-based chemotherapy. CONCLUSION Whereas patients with pure seminomatous EGCT histology have a long-term chance of cure of almost 90% irrespective of the primary tumor site, 45% of patients with mediastinal nonseminomas are alive at 5 years. This outcome is clearly inferior compared with patients with nonseminomatous retroperitoneal primary tumors.
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Patja K, Eero P, Iivanainen M. Cancer incidence among people with intellectual disability. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2001; 45:300-307. [PMID: 11489051 DOI: 10.1046/j.1365-2788.2001.00322.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The aim of the present study was to address the unresolved question of the risk of neoplasms among people with intellectual disability (ID). A total of 2173 individuals with ID from a large, representative, nation-wide population study conducted in Finland in 1962 were followed-up for cancer incidence between 1967 and 1997. Standardized incidence ratios (SIRs) were defined as ratios of observed to expected numbers of cancer cases. Expected rates were based on national incidence rates. The observed number of cancers in the cohort (173) was close to what was expected [SIR = 0.9, 95% confidence interval (95% CI) = 0.8-1.0]. There was a significantly reduced risk of cancers of the prostate (SIR = 0.2, 95% CI = 0.0-0.5), urinary tract (SIR = 0.3, 95% CI = 0.1-0.7) and lung (SIR = 0.6, 95% CI = 0.4-1.0). The risk was increased in cancers of the gallbladder (SIR = 2.8, 95% CI = 1.1-5.8) and thyroid gland (SIR = 2.1, 95% CI = 1.0-4.8). The risks of lung and gallbladder cancer were lowest and highest, respectively, in those subjects with profound and severe ID, a group who also had significantly elevated SIRs for brain cancer (SIR = 3.46, 95% CI = 1.5-14.4) and testicular cancer (SIR = 9.9, 95% CI = 1.2-35.6). The incidence of cancer among people with ID was comparable with the general population, despite their low prevalence of smoking and apparently decreased diagnostic screening activity. Nevertheless, a few types of cancer carry a higher risk in the population with ID, possibly because of conditions typical among this group, such as gallstones or oesophageal reflux.
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Affiliation(s)
- K Patja
- Department of Child Neurology, University of Helsinki Institute of Clinical Medicine, Helsinki, Finland.
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Billmire D, Vinocur C, Rescorla F, Colombani P, Cushing B, Hawkins E, London WB, Giller R, Lauer S. Malignant mediastinal germ cell tumors: an intergroup study. J Pediatr Surg 2001; 36:18-24. [PMID: 11150432 DOI: 10.1053/jpsu.2001.19995] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PURPOSE This review was conducted to determine clinical characteristics and response to therapy in this rare pediatric neoplasm. METHODS An intergroup Pediatric Oncology Group (POG) 9049/Children's Cancer Study Group (CCG) 8882 randomized trial was conducted to evaluate response rate and survival with chemotherapy using etoposide, bleomycin, and high or standard dose cisplatin for high-risk malignant germ cell tumors at extragonadal sites. For this review, a secondary analysis of clinical and operative findings in patients with primary site in the mediastinum was carried out. RESULTS Of the 38 children with malignant mediastinal germ cell tumors (MGCT), 36 had sufficient data to be included in this review. Thirty-four tumors were anterior mediastinal, 2 were intrapericardial. Younger patients had respiratory complaints; older patients had chest pain, precocious puberty, or facial fullness. Yolk sac tumor was the only malignant element in girls. Boys had yolk sac tumor in 7, germinoma in 3, choriocarcinoma in 2, and mixed malignant elements in 15. Benign teratoma elements coexisted in 22 patients. Four patients had biopsy and chemotherapy without tumor resection, and only 1 survived. Fourteen patients had resection at diagnosis followed by chemotherapy with 12 survivors. Eighteen patients had biopsy followed by chemotherapy and postchemotherapy tumor resection with 13 survivors. Tumor size in response to chemotherapy for these 18 patients was stable or increased in 6, and decreased in 12 (mean decrease of 57% in greatest dimension). Overall, 26 of 36 patients survived, with a 4-year patient survival rate of 71%+/-10%, and a 4-year event-free survival rate of 69%+/-10%. Ten patients died: 5 of tumor (all boys > or =15 yr), 2 of sepsis, and 3 of second malignancy. CONCLUSIONS Malignant MGCT is a complex tumor of varied histology with frequent coexistence of benign elements. Lesions often have incomplete regression with chemotherapy alone. Tumor resection may be undertaken at diagnosis or after attempted shrinkage with chemotherapy. Aggressive attempt at complete tumor resection should be offered to all patients even if bulky tumor persists after induction chemotherapy with expectation of a significant salvage rate. Boys > or =15 years may be a high-risk subgroup for mortality from tumor progression.
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Affiliation(s)
- D Billmire
- Division of Pediatric Surgery, St Christopher's Hospital for Children, Philadelphia, PA, USA
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Tahri A, Sahraoui S, Bouras N, Benchekroun N, Acharki A, Benider A, Kahlain A. [Primitive seminoma of the mediastinum: a case report]. ANNALES D'UROLOGIE 2001; 35:64-6. [PMID: 11233327 DOI: 10.1016/s0003-4401(01)80017-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this study, the case has been reported of a 36-year old male who was treated at the Ibn Rochd Oncology Center in Casablanca for a primary mediastinal seminoma revealed by a symptomatology including cough, dyspnea, laterocervical swelling, rachidial pain and gait disorder. The preliminary investigation showed significant mediastinal enlargement with a right pleuritis and vertebral metastases; tumor markers were normal. The diagnosis of seminoma was confirmed by pathological and immunohistochemical analysis of the cervical adenopathy. Disease management consisted of BEP/cisplatin type chemotherapy and lumbar, mediastinal, and supraclavicular radiotherapy. The response after four courses of combined chemo-/radiotherapy was estimated at 25%, but the patient died from respiratory failure five months after the initiation of treatment.
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Affiliation(s)
- A Tahri
- Centre d'oncologie Ibn-Rochd, CHU, Casablanca, Maroc
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Erasmus JJ, McAdams HP, Donnelly LF, Spritzer CE. MR IMAGING OF MEDIASTINAL MASSES. Magn Reson Imaging Clin N Am 2000. [DOI: 10.1016/s1064-9689(21)00042-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hartmann JT, Nichols CR, Droz JP, Horwich A, Gerl A, Fossa SD, Beyer J, Pont J, Fizazi K, Einhorn L, Kanz L, Bokemeyer C. Hematologic disorders associated with primary mediastinal nonseminomatous germ cell tumors. J Natl Cancer Inst 2000; 92:54-61. [PMID: 10620634 DOI: 10.1093/jnci/92.1.54] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The association between primary germ cell tumors of the mediastinum (the space between the lung pleura that contains the heart and other chest viscera) and hematologic malignancies has been described by retrospective analysis of patients treated at individual clinical centers. To better characterize the risk of hematologic disorders in patients with extragonadal germ cell tumors and to describe the clinical and biologic features of the disorders, we studied an unselected population in a large, international, multicenter database. METHODS Six hundred thirty-five patients treated at 11 centers in the United States and Europe from 1975 through 1996 were evaluated retrospectively. RESULTS A hematologic disorder was observed in 17 patients with germ cell tumors. All cases developed among the 287 patients with primary mediastinal nonseminomatous germ cell tumors, giving an incidence rate in this group of 2.0% (95% confidence interval [CI] = 1.1%-3.1%) per year over a median follow-up time of 3 years. The risk of developing hematologic disorders was statistically significantly increased in patients with primary mediastinal nonseminomatous germ cell tumors in comparison with the age-matched general population (standardized incidence ratio = 250; 95% CI = 140-405). The median time to onset of hematologic neoplasia was 6 months (range, 0-47 months), and the median survival after diagnosis of the hematologic disorder was 5 months (range, 0-16 months) (two-sided P<.0001, comparing survival from the time of diagnosis of the germ cell tumor of patients with and without hematologic disorders). CONCLUSION In our study, approximately one in 17 patients with primary mediastinal nonseminomatous germ cell tumors was affected by a hematologic disorder, whereas no cases were seen among 334 patients with other extragonadal germ cell tumors. The hematologic disorder had a statistically significant impact on prognosis, with none of the 17 reported patients surviving for more than 2 years.
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Abstract
A 13-year-old G(0)P(0) white female with trisomy 21 presented with a complex pelvic mass. She underwent resection of the mass and complete staging for what was found to be a stage IIIC completely resected dysgerminoma. She was treated with three cycles of bleomycin, etoposide, and cisplatin chemotherapy and remains free of disease 1 year later. This association is presented as a rare case that may illustrate the relative increase in germ cell neoplasms in female patients with Down's syndrome. While the association of seminoma with Down's syndrome has been documented in a number of cases in males, the female counterpart of this tumor, dysgerminoma, in trisomy 21 has been reported quite infrequently. The potential for germ cell tumors in both male and female trisomy 21 is therefore illustrated.
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Affiliation(s)
- J D Smucker
- Department of Obstetrics and Gynecology, Indiana University Cancer Center, Indianapolis, Indiana, 46202-5247, USA
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Miki M, Ohtake N, Hasumi M, Ohi M, Moriyama S. Seminoma associated with bilateral cryptorchidism in Down's syndrome: a case report. Int J Urol 1999; 6:377-80. [PMID: 10445309 DOI: 10.1046/j.1442-2042.1999.00078.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND A case of testicular typical seminoma associated with bilateral undescended testes in Down's syndrome is reported. A 42-year-old institutionalized male patient developed left testicular seminoma with retroperitoneal metastasis. METHODS/RESULTS Neither adjuvant chemotherapy nor radiotherapy were performed due to his severe mental retardation. He died as a result of the cancer 2 years after a left radical orchiectomy and an autopsy was carried out. DISCUSSION Recently an increase in the incidence of the association of testicular tumors and Down's syndrome has been repeatedly documented. Thirty-six cases of testicular tumors associated with Down's syndrome have been reported and of these 17.1% had cryptorchidism. This is a much lower percentage considering the high risk of cryptorchidism in males with Down's syndrome. The relationship between testicular germ cell tumors associated with cryptorchidism and Down's syndrome is discussed.
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Affiliation(s)
- M Miki
- Department of Urology, Asama General Hospital, Saku, Nagano, Japan.
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Chik K, Li C, Shing MM, Leung T, Yuen PM. Intracranial germ cell tumors in children with and without Down syndrome. J Pediatr Hematol Oncol 1999; 21:149-51. [PMID: 10206462 DOI: 10.1097/00043426-199903000-00012] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE Two Chinese children with Down syndrome affected by intracranial germ cell tumors are described. Because they represent two of eight affected patients in the current series from 1990 to 1996, it is postulated that such occurrence may be more than a coincidental event. PATIENTS AND METHODS Two children with Down syndrome developed germ cell tumors in atypical intracranial sites that affected basal ganglion and cerebellum. The pathology showed germinoma and yolk sac tumor, respectively. These were treated by radical surgical resection and chemotherapy with cisplatin, etoposide, and bleomycin, but without radiotherapy. RESULTS One patient survived 3 years without radiologic evidence of tumor. The other died from infective complications caused by severe myelosuppression after chemotherapy. CONCLUSIONS Subtle neurologic manifestations in developmentally handicapped patients with intracranial space-occupying lesions could result in delayed diagnosis. Children with Down syndrome suffering from brain tumors may have a higher chance for germ cell tumors. Assay for alpha-fetoprotein and beta-human chorionic gonadotrophin could hasten diagnosis in some cases. This observation and review of literature suggest an increased risk of developing intracranial germ cell tumors in subjects with Down syndrome.
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Affiliation(s)
- K Chik
- Department of Pediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin NT
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