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Shiao JC, Shen X. Contemporary Role of Radiation Therapy in Testicular Cancer. Urol Clin North Am 2024; 51:395-405. [PMID: 38925742 DOI: 10.1016/j.ucl.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Testicular cancer is a rare but curable male malignancy. Seminoma represents the majority of germ cell tumors and is considered radiation sensitive. Radiation treatment plays a role in adjuvant therapy after orchiectomy of stage I, IIA, and IIB seminomas. Radiation dose de-escalation has been effective in preventing tumor recurrences while also limiting acute and long-term toxicities. However, long-term risks, including the prevailing concern of secondary malignancy risk, between adjuvant radiation and chemotherapy play a role in recommendations. Ongoing work continues to be performed to reduce radiation field and dose in combination with chemotherapy while still maintaining excellent outcomes.
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Affiliation(s)
- Jay C Shiao
- Department of Radiation Oncology, University of Kansas Cancer Center, 4001 Rainbow Boulevard, Kansas City, KS 66160, USA.
| | - Xinglei Shen
- Department of Radiation Oncology, University of Kansas Cancer Center, 4001 Rainbow Boulevard, Kansas City, KS 66160, USA
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2
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Yuen KL, Pandit K, Puri D, Yodkhunnatham N, Bagrodia A. Testicular cancer with small metastatic burden: optimal approach in 2024. Curr Opin Urol 2024; 34:204-209. [PMID: 38305430 DOI: 10.1097/mou.0000000000001162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
PURPOSE OF REVIEW Recent advancements in the management of clinical stage II (CS II) testicular cancer have transformed it into a predominantly curable condition. This success in treatment advancements has markedly extended patient survival. However, these treatments carry risks and morbidities, which is important to consider given the disease's impact on young men and the emerging understanding of long-term treatment consequences. RECENT FINDINGS Emerging data support primary retroperitoneal lymph node dissection (RPLND) for select CS II seminoma patients, with similar short-term outcomes to chemotherapy but less treatment intensity. Recent studies have also challenged the reflexive use of adjuvant chemotherapy for pathologic node-positive disease, as growing evidence shows low relapse rates regardless of nodal stage. Furthermore, novel biomarkers like circulating serum microRNA-371a-3p levels can help predict the presence of viable germ cell tumor at time of RPLND. SUMMARY Advances in risk stratification and therapy enable personalized de-escalation approaches for oligometastatic testicular cancer, optimizing survivorship. Upfront RPLND, reassessing adjuvant systemic therapy for RPLND pN+ disease, and novel biomarkers will shape precision treatment to achieve high cure rates with excellent quality of life. Ongoing trials of reduced-intensity regimens, accurate prognostic models, improved surgical strategy, and emerging biomarkers represent the next frontier in tailored curative therapy.
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Affiliation(s)
- Kit L Yuen
- Department of Urology, University of California San Diego, La Jolla, CA, USA
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3
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Suzuki S, Nagumo Y, Kandori S, Kojo K, Nitta S, Chihara I, Shiga M, Ikeda A, Kawahara T, Hoshi A, Negoro H, Bryan MJ, Okuyama A, Higashi T, Nishiyama H. The prognostic impact of treatment centralization in patients with testicular germ cell tumors: analysis of hospital-based cancer registry data in Japan. Int J Clin Oncol 2024; 29:318-324. [PMID: 38265529 DOI: 10.1007/s10147-023-02457-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/11/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND To identify the prognostic impact of treatment centralization in patients with testicular germ cell tumors (TGCT). METHODS We used a hospital-based cancer registry data in Japan to extract seminoma and non-seminoma cases that were diagnosed in 2013, histologically confirmed, and received the first course of treatment. To compare the 5-years overall survival (OS) rates of patients stratified by institutional care volume, we performed a Cox proportional hazards regression analysis using inverse probability of treatment weighting (IPTW) method to adjust patient backgrounds. RESULTS A total of 1767 TGCT patients were identified. The 5-years OS rates for stage II and III TGCT patients treated at low-volume institutions (< 7 cases) were significantly worse than high-volume institutions (≥ 7 cases) (91.2% vs. 83.4%, p = 0.012). Histological stratification revealed that 5-year OS rates for stage II and III seminoma patients in the low-volume group were significantly worse than the high-volume group (93.5% vs. 84.5%, p = 0.041). Multivariate OS analysis using an IPTW-matched cohort showed that institutional care volume was an independent prognostic factor (hazard ratio 2.13 [95% confidence interval: 1.23-3.71], p = 0.0072). CONCLUSION Our results indicate that stage II and III TGCT patients experience lower survival rates at low-volume institutions and would benefit from treatment centralization.
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Affiliation(s)
- Shuhei Suzuki
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yoshiyuki Nagumo
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Shuya Kandori
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Kousuke Kojo
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Satoshi Nitta
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Ichiro Chihara
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Masanobu Shiga
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Atsushi Ikeda
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Takashi Kawahara
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Akio Hoshi
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Hiromitsu Negoro
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Mathis J Bryan
- International Medical Center, University of Tsukuba Affiliated Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Ayako Okuyama
- Center for Cancer Registries, Institute for Cancer Control, National Cancer Center, 5-1-1 Tsukiji, Chuo-Ku, Tokyo, 104-0045, Japan
- Graduate School of Nursing, St Luke's International University, 10-1 Akashicho, Chuo-Ku, Tokyo, 104-0044, Japan
| | - Takahiro Higashi
- Center for Cancer Registries, Institute for Cancer Control, National Cancer Center, 5-1-1 Tsukiji, Chuo-Ku, Tokyo, 104-0045, Japan
| | - Hiroyuki Nishiyama
- Department of Urology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
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Pursley J, Remillard K, Depauw N, Lee G, Grassberger C, Paganetti H, Efstathiou JA, Kamran SC. Radiation Therapy for Stage IIA/B Seminoma: Modeling Secondary Cancer Risk for Protons and VMAT versus 3D Photons. Cancers (Basel) 2024; 16:784. [PMID: 38398175 PMCID: PMC10886533 DOI: 10.3390/cancers16040784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Radiation therapy (RT) is an effective treatment for stage IIA and select stage IIB seminomas. However, given the long life expectancy of seminoma patients, there are concerns about the risk of secondary cancers from RT. This study assessed differences in secondary cancer risk for stage II seminoma patients following proton pencil-beam scanning (PBS) and photon VMAT, compared to 3D conformal photon RT. Ten seminoma patients, five with a IIA staging who received 30 GyRBE and five with a IIB staging who received 36 GyRBE, had three RT plans generated. Doses to organs at risk (OAR) were evaluated, and secondary cancer risks were calculated as the Excess Absolute Risk (EAR) and Lifetime Attributable Risk (LAR). PBS reduced the mean OAR dose by 60% on average compared to 3D, and reduced the EAR and LAR for all OAR, with the greatest reductions seen for the bowel, liver, and stomach. VMAT reduced high doses but increased the low-dose bath, leading to an increased EAR and LAR for some OAR. PBS provided superior dosimetric sparing of OAR compared to 3D and VMAT in stage II seminoma cases, with models demonstrating that this may reduce secondary cancer risk. Therefore, proton therapy shows the potential to reduce acute and late side effects of RT for this population.
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Affiliation(s)
- Jennifer Pursley
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Kyla Remillard
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Nicolas Depauw
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Grace Lee
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Clemens Grassberger
- Department of Radiation Oncology, University of Washington Medical Center, Seattle, WA 98195, USA
| | - Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Jason A. Efstathiou
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Sophia C. Kamran
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
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Rosen DB, Tan AJN, Pursley J, Kamran SC. Advances in radiation therapy for testicular seminoma. World J Urol 2023; 41:3895-3903. [PMID: 37979002 DOI: 10.1007/s00345-023-04674-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/26/2023] [Indexed: 11/19/2023] Open
Abstract
PURPOSE Novel techniques and advances in radiation therapy (RT) have been explored to treat testicular seminoma, a highly radiosensitive and curable histology. We evaluated the historical and current indications for radiation therapy (RT) in testicular seminoma. METHODS A narrative literature review was performed. Studies of RT for testicular seminoma were included. Additionally, recent trials testing the use of combination or surgical therapies for clinical stage (CS) II were included. Search parameters included radiation therapy, testicular seminoma, surgery, and chemoradiation. Parameters and outcomes assessed were progression-free survival (PFS), overall survival (OS), acute toxicities, long-term sequelae, and rates of secondary malignancies. RESULTS Practice defining and changing studies in the use or omission of radiation therapy for testicular seminoma were identified along with resultant changes in National Comprehensive Cancer Network (NCCN) and European guidelines. Recent trials in combined chemoradiation and upfront surgical approaches to CS II disease were reviewed. CONCLUSION RT has historically been used as adjuvant treatment for CS I disease and is highly effective at treating CS II (A/B) testicular seminoma. The drive to maintain therapeutic efficacy and reduce acute and long-term side effects, namely secondary malignancies, is being tested using new radiation technologies, combined modality therapy in the form of chemoradiation and with upfront surgical approaches. Also, as guidelines now "strongly prefer" surveillance instead of adjuvant RT for CS I disease, the current CS II population comprises patients presenting with CS II disease ("de novo") and those who present with CSII after relapsing post orchiectomy for CS I ("relapsed"). Emerging evidence suggests that these two groups have different outcomes with respect to RT and chemoradiation. Consequently, future trials may need to sub-stratify according to these groups.
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Affiliation(s)
| | - Arvin Jeremy N Tan
- Internal Medicine Residency Program, University of Hawaii, Honolulu, HI, USA
| | - Jennifer Pursley
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Sophia C Kamran
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
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6
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Therapy of clinical stage IIA and IIB seminoma: a systematic review. World J Urol 2022; 40:2829-2841. [PMID: 34779882 PMCID: PMC9712301 DOI: 10.1007/s00345-021-03873-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/25/2021] [Indexed: 12/30/2022] Open
Abstract
PURPOSE The optimal treatment for clinical stage (CS) IIA/IIB seminomas is still controversial. We evaluated current treatment options. METHODS A systematic review was performed. Only randomized clinical trials and comparative studies published from January 2010 until February 2021 were included. Search items included: seminoma, CS IIA, CS IIB and therapy. Outcome parameters were relapse rate (RR), relapse-free (RFS), overall and cancer-specific survival (OS, CSS). Additionally, acute and long-term side effects including secondary malignancies (SMs) were analyzed. RESULTS Seven comparative studies (one prospective and six retrospective) were identified with a total of 5049 patients (CS IIA: 2840, CS IIB: 2209). The applied treatment modalities were radiotherapy (RT) (n = 3049; CS IIA: 1888, CSIIB: 1006, unknown: 155) and chemotherapy (CT) or no RT (n = 2000; CS IIA: 797, CS IIB: 1074, unknown: 129). In CS IIA, RRs ranged from 0% to 4.8% for RT and 0% for CT. Concerning CS IIB RRs of 9.5%-21.1% for RT and of 0%-14.2% for CT have been reported. 5-year OS ranged from 90 to 100%. Only two studies reported on treatment-related toxicities. CONCLUSIONS RT and CT are the most commonly applied treatments in CS IIA/B seminoma. In CS IIA seminomas, RRs after RT and CT are similar. However, in CS IIB, CT seems to be more effective. Survival rates of CS IIA/B seminomas are excellent. Consequently, long-term toxicities and SMs are important survivorship issues. Alternative treatment approaches, e.g., retroperitoneal lymph node dissection (RPLND) or dose-reduced sequential CT/RT are currently under prospective investigation.
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Koši Kunac A, Gnjidić M, Antunac Golubić Z, Gamulin M. Treatment of germ cell testicular cancer. Acta Clin Croat 2020; 59:496-504. [PMID: 34177060 PMCID: PMC8212650 DOI: 10.20471/acc.2020.59.03.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Germ-cell testicular cancer (GCTC) is a malignant neoplasm derived from the primordial germ cell. Although it accounts for approximately 1% of all malignancies in men, it is the most common cancer of younger male population, with the highest incidence between ages 15 and 35. Testicular cancer incidence rate has risen globally over the past several decades, with the average increase in the incidence of testicular cancer in Croatia of 7% per annum from the year 1983 to 2007. Two main groups are seminomas and non-seminomas, each accounting for 50% of cases, and they differ in treatment modalities and response to therapy. Despite increase in the incidence rate, a promising circumstance is that GCTC has become a model of curable cancer. Because of advances in diagnostic procedures, sophisticated radiation techniques and especially the introduction of cisplatin based chemotherapy protocols together with advanced postchemotherapy surgical techniques, curability is expected in about 95% of all patients diagnosed with testicular cancer and over 70% of patients with advanced disease. In this review, we will focus on treatment strategies of primary GCTC.
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Affiliation(s)
| | - Milena Gnjidić
- Zagreb University Hospital Centre, Department of Oncology, Division of Medical Oncology, Unit of Uro-oncology, Referral Center for Treatment of Germ Cell Tumors and Extragonadal Germ Cell Tumors of the Ministry of Health of the Republic of Croatia, Zagreb, Croatia
| | - Zrna Antunac Golubić
- Zagreb University Hospital Centre, Department of Oncology, Division of Medical Oncology, Unit of Uro-oncology, Referral Center for Treatment of Germ Cell Tumors and Extragonadal Germ Cell Tumors of the Ministry of Health of the Republic of Croatia, Zagreb, Croatia
| | - Marija Gamulin
- Zagreb University Hospital Centre, Department of Oncology, Division of Medical Oncology, Unit of Uro-oncology, Referral Center for Treatment of Germ Cell Tumors and Extragonadal Germ Cell Tumors of the Ministry of Health of the Republic of Croatia, Zagreb, Croatia
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Aydin AM, Zemp L, Cheriyan SK, Sexton WJ, Johnstone PAS. Contemporary management of early stage testicular seminoma. Transl Androl Urol 2020; 9:S36-S44. [PMID: 32055484 PMCID: PMC6995845 DOI: 10.21037/tau.2019.09.32] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 08/26/2019] [Indexed: 12/28/2022] Open
Abstract
Therapy for early stage testicular seminoma has changed radically over the past several decades. Given high cure rates and clinical trials supporting less active therapy in most cases, close observation after radical orchiectomy is now considered standard of care for clinical stage (CS) IA/IB seminoma, with either radiation therapy (RT) or chemotherapy salvage options possible. For CS IIA/IIB seminoma characterized by non-bulky retroperitoneal lymph node involvement (≤5 cm in greatest dimension), RT or combination chemotherapy are the standard of care. Given high comparable survival rates, preventing treatment-related toxicity and second malignancy, and limiting quality of life deficits associated with intense treatment has gained much greater importance. Clinical trials are currently testing the feasibility of retroperitoneal lymph node dissection (RPLND) for low volume CS IIA/IIB metastatic testicular seminoma to this end. Likewise, one cycle of chemotherapy is being evaluated as an adjuvant approach to reduce recurrence rates in CS I disease with unfavorable risk factors. Moreover, recent genomic and molecular studies have recently identified novel signatures and a potential biomarker for testicular seminoma. In this review, we first summarize the evolution of early stage seminoma management and discuss the effectiveness and drawbacks of contemporary treatment strategies. We further outline future perspectives and potential challenges in management of early stage testicular seminoma.
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Affiliation(s)
- Ahmet Murat Aydin
- Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Logan Zemp
- Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Salim K. Cheriyan
- Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Wade J. Sexton
- Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Peter A. S. Johnstone
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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9
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Siddiqui BA, Zhang M, Pisters LL, Tu SM. Systemic therapy for primary and extragonadal germ cell tumors: prognosis and nuances of treatment. Transl Androl Urol 2020; 9:S56-S65. [PMID: 32055486 DOI: 10.21037/tau.2019.09.11] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Testicular germ cell tumors are the most common solid tumors in young men. These cancers represent a success story of modern medicine in our ability to cure young patients and offer decades of life, with a 5-year survival rate of approximately 95%. This review outlines the staging and risk classification of testicular cancers, and reviews the current state of knowledge and standard of care for the systemic treatment of testicular germ cell tumors with chemotherapy, focusing on the relevant clinical data supporting each treatment regimen. This review also briefly highlights current areas of active investigation, notably in the relapsed and refractory setting, including ongoing clinical trials.
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Affiliation(s)
- Bilal A Siddiqui
- Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Miao Zhang
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Louis L Pisters
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shi-Ming Tu
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Abstract
There are several treatment approaches for stage II germ cell tumors (GCTs), and a thorough understanding of the staging classification and histologic differences in tumor biology and therapeutic responsiveness is critical to determine an effective, multimodal management strategy that involves urologists, medical oncologists, and radiation oncologists. This article discusses contemporary management strategies for stage II GCTs, including chemotherapy, radiotherapy, retroperitoneal lymph node dissection (RPLND), and surveillance. Patient selection, histology, and extent of lymphadenopathy drive management, and, as both treatment and detection strategies continue to emerge and be refined, the management of patients with stage II GCT continues to evolve.
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Affiliation(s)
- Rashed A Ghandour
- Department of Urology, University of Texas Southwestern Medical Center, 2001 Inwood Road, 4th Floor, Dallas, TX 75390-9110, USA
| | - Nirmish Singla
- Department of Urology, University of Texas Southwestern Medical Center, 2001 Inwood Road, 4th Floor, Dallas, TX 75390-9110, USA
| | - Aditya Bagrodia
- Department of Urology, University of Texas Southwestern Medical Center, 2001 Inwood Road, 4th Floor, Dallas, TX 75390-9110, USA.
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11
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Edwards DC, Cahn DB, Smaldone MC, Kutikov A. Use of administrative data for comparative effectiveness research in the treatment of non-prostate genitourinary malignancies. Urol Oncol 2018; 36:193-212. [DOI: 10.1016/j.urolonc.2017.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/30/2017] [Accepted: 08/04/2017] [Indexed: 01/13/2023]
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Lieng H, Chung P, Lam T, Warde P, Craig T. Testicular seminoma: Scattered radiation dose to the contralateral testis in the modern era. Pract Radiat Oncol 2018; 8:e57-e62. [PMID: 29306641 DOI: 10.1016/j.prro.2017.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/05/2017] [Accepted: 10/05/2017] [Indexed: 11/18/2022]
Abstract
PURPOSE Limited data exist on testicular dose measurements using modern radiation treatment techniques and volumes for testicular seminoma. The aim of this study was to report the testicular dose using in vivo measurements in men with testicular seminoma receiving abdominopelvic radiation therapy (APRT) and a modified dog-leg field with and without gonadal shielding. METHODS AND MATERIALS Men with histologically confirmed testicular seminoma, either newly diagnosed stage II disease or isolated retroperitoneal relapse on surveillance for stage I disease, treated with APRT had testicular dose measurements recorded using MOSFET dosimeters. Those patients wishing to preserve fertility underwent radiation treatment with daily gonadal shielding. Factors that may influence testicular dose including field size, distance of the remaining testis from the radiation field, and patient separation, were also measured. RESULTS Measurements were performed for 16 men; 10 with gonadal shielding and 6 without. The mean measured dose to the testis in the patients with gonadal shielding was 2.6 cGy (standard error, 0.75; range, 0-13) compared with 28.6 cGy (standard error, 12.6; range, 0-86) in the unshielded group for a 20-fraction treatment. CONCLUSIONS The use of gonadal shielding during APRT with a modified dog-leg technique results in a low testicular dose that is below the likely threshold for impaired spermatogenesis. In those men wishing to preserve fertility, we recommend the use of gonadal shielding, even with the use of modern radiation therapy techniques.
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Affiliation(s)
- Hester Lieng
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada; University of Toronto, Department of Radiation Oncology, Toronto, Ontario, Canada
| | - Peter Chung
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada; University of Toronto, Department of Radiation Oncology, Toronto, Ontario, Canada.
| | - Tony Lam
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Padraig Warde
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada; University of Toronto, Department of Radiation Oncology, Toronto, Ontario, Canada
| | - Tim Craig
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
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Lieng H, Warde P, Bedard P, Hamilton RJ, Hansen AR, Jewett MAS, O'malley M, Sweet J, Chung P. Recommendations for followup of stage I and II seminoma: The Princess Margaret Cancer Centre approach. Can Urol Assoc J 2017; 12:59-66. [PMID: 29381453 DOI: 10.5489/cuaj.4531] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Testicular seminoma most commonly affects young men and is associated with favourable prognosis. Various followup schedules and imaging protocols for testicular seminoma have been described without overall consensus. We reviewed the literature together with our experience at the Princess Margaret Cancer Centre and present an evidence-based followup approach for patients with stage I and II seminoma.
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Affiliation(s)
- Hester Lieng
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network and Department of Radiation Oncology, University of Toronto; Toronto, ON, Canada
| | - Padraig Warde
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network and Department of Radiation Oncology, University of Toronto; Toronto, ON, Canada
| | - Philippe Bedard
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, University Health Network and Department of Medicine, University of Toronto; Toronto, ON, Canada
| | - Robert J Hamilton
- Department of Surgery (Urology) and Surgical Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto; Toronto, ON, Canada
| | - Aaron R Hansen
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, University Health Network and Department of Medicine, University of Toronto; Toronto, ON, Canada
| | - Michael A S Jewett
- Department of Surgery (Urology) and Surgical Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto; Toronto, ON, Canada
| | - Martin O'malley
- Division of Abdominal Imaging, Joint Department of Medical Imaging, University of Toronto; Toronto, ON, Canada
| | - Joan Sweet
- Department of Pathology and Lab Medicine, University Health Network, University of Toronto; Toronto, ON, Canada
| | - Peter Chung
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network and Department of Radiation Oncology, University of Toronto; Toronto, ON, Canada
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14
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Patterns of care and survival outcomes for adolescent and young adult patients with testicular seminoma in the United States: A National Cancer Database analysis. J Pediatr Urol 2017; 13:386.e1-386.e7. [PMID: 28153774 DOI: 10.1016/j.jpurol.2016.12.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 12/07/2016] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Testicular germ cell tumors (GCTs) are the most common solid tumor among adolescent and young adult (AYA) males. AYA patients with GCTs most typically have non-seminoma compared with seminoma, and accordingly there are fewer data reported on the AYA experience with testicular seminoma. OBJECTIVE To evaluate national trends in postoperative treatment and overall survival (OS) outcomes in testicular seminoma by age group, specifically comparing AYAs with older adults. STUDY DESIGN The National Cancer Data Base (NCDB) was queried for patients with testicular seminoma diagnosed between 2004 and 2012, who underwent orchiectomy followed by observation or adjuvant therapy (chemotherapy, radiation (RT), or both). Patients were grouped by age: AYA (15-39 years), adults between 40 and 55 years, and adults >55 years. Overall survival (OS) was presented using Kaplan-Meier curves and groups compared via a log-rank test. Univariate (UVA) and multivariate (MVA) analyses were performed using Cox proportional hazards regression models. Binary multiple logistic regression identified differences in variables by age category. RESULTS Of the total 22,361 patients the majority were AYAs (12,880, 57.6%), followed by adults 40-55 years (8,022, 35.9%), and >55 years (1,459, 6.5%). Unadjusted 5-year OS was significantly better for AYAs versus adults 40-55 years and >55 years (98.0%, 96.4%, 87.7%; p < 0.001), as was 10-year OS (96.1%, 91.8%, 71.3% respectively; p < 0.001). The Table shows that on a MVA, OS was significantly better for AYAs versus adults 40-55 years and adults >55 years. AYA patients were also more commonly treated at centers with greater clinical volume. Additionally, AYA patients were less likely to present with metastatic disease. Accordingly, AYA patients were less likely to undergo retroperitoneal lymph node dissection (OR 0.81; p = 0.001) and were less often managed with adjuvant therapy including chemotherapy (OR 0.91; p = 0.027), RT (OR 0.93; p = 0.025), or both (OR 0.68; p = 0.020). DISCUSSION AYA patients with testicular seminoma present with earlier stage disease and in the clinical Stage I setting are more often are managed with active surveillance following orchiectomy when compared with older adults in this population-based analysis. Among AYA patients, OS was modestly better when compared with adults 40-55 years and significantly better when compared with adults >55 years. CONCLUSION Our objective to describe the patterns of care and survival outcomes for AYA patients with testicular seminoma in the USA was met by reviewing this large national dataset. These results may inform future guidelines for management of AYA seminoma.
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