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Viveros-Carreño D, Pareja R, Plante M. De-escalation of surgical radicality for non-fertility preserving management in patients with early-stage cervical cancer: a systematic review. Int J Gynecol Cancer 2024; 34:386-392. [PMID: 38438182 DOI: 10.1136/ijgc-2023-004593] [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: 03/06/2024] Open
Abstract
OBJECTIVE We sought to evaluate the oncologic outcomes of simple hysterectomy in patients with low-risk early-stage cervical cancer (tumors ≤2 cm with limited stromal invasion). METHODS This study was registered in PROSPERO (registration number CRD42023433840) following the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) checklist. MEDLINE (through Ovid), EmMBASEbase, and Cochrane Central Register of Controlled Trials were searched from inception until June 2023. Randomized controlled trials and observational studies with two arms of comparison (simple hysterectomy with lymph node assessment vs radical hysterectomy with lymph node assessment) in patients with low-risk early-stage cervical cancer were considered. RESULTS The search identified 1270 articles; eighteen studies were considered potentially eligible after removing duplicates, and four met the selection criteria. Three studies were randomized controlled trials, and the other was a retrospective cohort study. In total, 981 patients were included. There were 485 (49.4%) and 496 (50.6%) patients in the simple hysterectomy and radical hysterectomy groups, respectively. Simple hysterectomy with lymph node assessment was not associated with a higher risk of death at 5 years (RR 0.98, 95% CI: 0.31 to 3.10; I2=0%, two randomized controlled trials, 141 patients, for an absolute risk reduction of zero percentage points [95% CI -9.0 to 9.0]), pelvic recurrence at 3 years (97.5% and 97.8% for simple hysterectomy and radical hysterectomy, respectively, p=0.79), and overall recurrence at 3 years (95 %% and 100% for simple hysterectomy and radical hysterectomy, respectively, p=0.30). CONCLUSION Simple hysterectomy with lymph node evaluation for low-risk early-stage cervical cancer is not associated with a detrimental effect on oncologic outcomes and has a better morbidity profile.
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Affiliation(s)
- David Viveros-Carreño
- Gynecologic Oncology, Instituto Nacional de Cancerología, Bogota, Colombia
- Gynecologic Oncology, Clínica Universitaria Colombia And Clínica Los Nogales, Bogotá, Colombia
| | - Rene Pareja
- Gynecologic Oncology, Clinica ASTORGA, Medellin, and Instituto Nacional de Cancerología, Bogotá, Colombia
| | - Marie Plante
- Obstetrics and Gynecology, Centre Hospitalier Universitaire de Quebec, Quebec, Quebec, Canada
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Controversies in Managing Early Cervical Cancer. INDIAN JOURNAL OF GYNECOLOGIC ONCOLOGY 2021. [DOI: 10.1007/s40944-021-00537-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wu J, Logue T, Kaplan SJ, Melamed A, Tergas AI, Khoury-Collado F, Hou JY, St Clair CM, Hershman DL, Wright JD. Less radical surgery for early-stage cervical cancer: a systematic review. Am J Obstet Gynecol 2021; 224:348-358.e5. [PMID: 33306971 DOI: 10.1016/j.ajog.2020.11.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE A systematic review was performed to examine the outcomes of simple hysterectomy for women with low-risk, early-stage cervical cancer. DATA SOURCES MEDLINE, Embase, Web of Science, and ClinicalTrials.gov were searched from inception until November 4, 2020. STUDY ELIGIBILITY CRITERIA Original research reporting recurrence or survival outcomes among women with early-stage cervical cancer (defined as stage IA2 to IB1 disease) who were treated with simple hysterectomy. METHODS Data regarding study characteristics, tumor characteristics, other treatment modalities, adjuvant therapy, recurrence, and survival outcomes were analyzed. Studies that reported both simple hysterectomy and radical hysterectomy outcomes were compared in a subgroup analysis. Summary statistics were reported and eligible studies were further analyzed to determine an estimated hazard ratio comparing simple hysterectomy with radical hysterectomy. RESULTS A total of 21 studies were included, of which 3 were randomized control trials, 14 retrospective studies, 2 prospective studies, and 2 population-level data sets. The cohort included 2662 women who underwent simple hysterectomy, of which 36.1% had stage IA2 disease and 61.0% stage IB1 disease. Most cases (96.8%) involved tumors of ≤2 cm in size, and 15.4% of cases were lymphovascular space invasion positive. Approximately 71.8% of women who underwent simple hysterectomy had a lymph node assessment, and 30.7% of women underwent adjuvant chemotherapy or radiation. The most common complications described were lymphedema (24%), lymphocysts (22%), and urinary incontinence (18.5%). The total death rate for studies that reported deaths was 5.5%. By stage, there was a 2.7% mortality rate among IA2 disease and a 7.3% mortality rate among IB1 disease. Of note, 18 studies reported outcomes for both simple and radical hysterectomy, with a 4.5% death rate in the radical hysterectomy group and a 5.8% death rate in the simple hysterectomy group. Estimated and reported hazard ratio demonstrated no significant association for mortality between radical and nonradical surgeries for IA2 disease but potentially increased risk of mortality among IB1 disease. All studies had a moderate to high risk of bias, including the 3 randomized control trials. Level of evidence was limited to III to IV. CONCLUSION The use of less radical surgery for women with stage IA2 and small volume IB1 cervical cancers appears favorable. However, there is concern that simple hysterectomy in women with stage IB1 tumors may adversely impact survival. Overall, the quality of studies available is modest, limiting the conclusions that can be drawn from the available literature.
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Hsu HC, Tai YJ, Chen YL, Chiang YC, Chen CA, Cheng WF. Factors predicting parametrial invasion in patients with early-stage cervical carcinomas. PLoS One 2018; 13:e0204950. [PMID: 30335786 PMCID: PMC6193633 DOI: 10.1371/journal.pone.0204950] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 09/16/2018] [Indexed: 11/18/2022] Open
Abstract
We aimed to identify factors predicting parametrial invasion in early-stage cervical cancer patients undergoing radical hysterectomy. We recruited women with invasive cervical cancer who underwent radical hysterectomy at a single medical institute from 2000–2011. The clinical and pathological characteristics and outcomes were retrospectively recorded, and the risk factors for parametrial invasion were analyzed. We enrolled 339 patients, including 7 with stage IA1 carcinomas, 10 with stage IA2, 266 with stage IB1, 39 with stage IB2, 14 with stage IIA1, and 3 with stage IIA2. The majority (237/339, 69.9%) had squamous cell carcinoma, while 32 (12.4%) had parametrial invasion. The 16 patients with stage IB1 tumors and parametrial invasion were older (55.9±9.5vs. 49.0±9.9 years, p = 0.005, Mann-Whitney U test), and had deeper cervical stromal invasion (9.59±4.87 vs. 7.47±5.48 mm, p = 0.048, Mann-Whitney U test), larger tumor size (2.32±1.15 vs. 1.74±1.14cm, p = 0.043, Mann-Whitney U test), higher incidences of lymphovascular space invasion (87.5% vs. 28.8%, p<0.001, chi-square test), and greater lymph node metastasis (68.8% vs. 10.8%, p<0.001, chi-square test) than the 260 patients without parametrial invasion. Among the patients with stage IB1 tumor size >2 cm,10% had parametrial invasion and 24.2% had lymph node metastasis compared with only 4% and 9.4% of stage IB1 patients with a tumor size <2 cm, respectively. Only one (0.9%) of the 109 patients aged less than 50 years had parametrial invasion compared with 6 (9.7%) of the 62 patients aged over 50 years. Patients with stage IA2 and IB1 tumors <2 cm may not need radical hysterectomy owing to the low incidence of parametrial invasion.
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Affiliation(s)
- Heng-Cheng Hsu
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Obstetrics and Gynecology, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu City, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Jou Tai
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Li Chen
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ying-Cheng Chiang
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chi-An Chen
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wen-Fang Cheng
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Oncology, College of Medicine, National Taiwan University, Taipei, Taiwan
- * E-mail:
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The safety of fertility preservation for microinvasive cervical adenocarcinoma: a meta-analysis and trial sequential analysis. Arch Gynecol Obstet 2018; 298:465-475. [PMID: 29876746 DOI: 10.1007/s00404-018-4799-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/16/2018] [Indexed: 10/14/2022]
Abstract
PURPOSE This study sought to evaluate the safety of conservative treatment in the management of patients with microinvasive cervical adenocarcinoma. METHODS The PubMed, PMC, EMBASE, Web of Science and Cochrane databases were searched to collect correlational studies published in English between January 1949 and May 2018. Series reports that evaluating the oncological prognoses of patients with microinvasive cervical adenocarcinoma who were treated with fertility-sparing surgery versus hysterectomy were pooled for meta-analysis and trial sequential analysis. RESULTS A total of 8 articles with 1256 patients were collected, including 7 retrospective reviews and 1 prospective study. Only one (0.08%) patient had parametrial involvement. Positive margins of surgical specimens were identified in 6 patients (2.2%). Lymph node metastasis was found in 5 patients (0.4%). The progression-free survival and overall survival rates were 99.3 and 98.2%. Fertility-sparing surgery had no adverse impact on recurrence or survival (P = 0.524 and 0.485, respectively). Regarding potential selection bias, significantly more patients with stage IA2 tumors than those with stage IA1 disease were treated with hysterectomy (P < 0.001). The trial sequential analysis indicated that the cumulative number of patients failed to meet the required sample size (number of patients). CONCLUSIONS The prognosis for patients with microinvasive cervical adenocarcinoma is excellent. Fertility preservation is at least appropriate for young women with stage IA1 adenocarcinoma. Further studies are still warranted to evaluate the safety of this procedure in managing patients with microinvasive cervical adenocarcinoma.
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Factors Predicting Pelvic Lymph Node Metastasis, Relapse, and Disease Outcome in Pattern C Endocervical Adenocarcinomas. Int J Gynecol Pathol 2018; 36:476-485. [PMID: 28134668 DOI: 10.1097/pgp.0000000000000357] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A pattern-based classification system has recently been proposed for invasive endocervical adenocarcinoma (EAC), which is predictive of the risk for lymph node metastases (LNM). The main utility of the system lies in separating cases with very low risk for LNM (pattern A) from those with higher risk (pattern B and C). Different growth patterns (GPs) are found in pattern C cases. The aim of the study was to evaluate the effect of GP on the behavior of pattern C EAC. By reevaluating 189 pattern C EACs, we documented 6 architectural GPs: diffuse destructive (DD), confluent (CON), extensive linear destructive (ELD), band-like lymphocytic infiltrate (BLL), solid (SOL), and micropapillary (MP). When an EAC had an appreciable second component (≤50%) the designation of a mixed EAC was used. We found 32 (17%) tumors to be DD, 23 (12%) CON, 27 (14%) ELD, 9 (5%) SOL, 7 (4%) BLL, and 7 (4%) micropapillary. A total of 84 (44%) EACs were mixed (DD+CON). All micropapillary EACs had LNM versus none of the patients with EAC with an ELD GP (P=0.002). Recurrent disease was seen in 44% of EACs with a DD GP, whereas 0% of EACs with BLL GP developed recurrent disease. Mixed (DD+CON) tumors had a significantly worse 6-year overall survival. This study demonstrated that not all pattern C EACs have an aggressive behavior. These patients should be treated with radical hysterectomy and sentinel lymph node biopsy.
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Yahata H, Sonoda K, Yasunaga M, Ohgami T, Kawano Y, Kaneki E, Okugawa K, Kaku T, Kato K. Surgical treatment and outcome of early invasive adenocarcinoma of the uterine cervix (FIGO stage IA1). Asia Pac J Clin Oncol 2017; 14:e50-e53. [PMID: 28429457 DOI: 10.1111/ajco.12691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 03/20/2017] [Indexed: 11/30/2022]
Abstract
AIM To investigate the surgical outcome of FIGO stage IA1 cervical adenocarcinoma. METHODS Between 2005 and 2011, 12 patients from Kyushu University Hospital had cervical adenocarcinoma, with a tumor depth of less than 3 mm and a horizontal width of less than 7 mm (FIGO stage IA1), diagnosed by cervical conization. All patients underwent simple hysterectomy or simple trachelectomy with pelvic lymphadenectomy. RESULTS The mean patient age was 34 years (range, 26-70 years). The median follow-up period was 70.5 months (range, 26-99 months). No pelvic lymph-node metastasis was seen, and no patient experienced disease recurrence. CONCLUSION Early invasive cervical adenocarcinoma with a depth of invasion of 3 mm or less and a horizontal spread of 7 mm or less has little potential for nodal metastasis or recurrence. Therefore, simple hysterectomy or trachelectomy, without lymphadenectomy, might be an alternative treatment option for stage IA1 cervical adenocarcinoma.
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Affiliation(s)
- Hideaki Yahata
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenzo Sonoda
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masafumi Yasunaga
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tatsuhiro Ohgami
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshiaki Kawano
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eisuke Kaneki
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kaoru Okugawa
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tsunehisa Kaku
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kiyoko Kato
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Roma AA, Mistretta TA, Diaz De Vivar A, Park KJ, Alvarado-Cabrero I, Rasty G, Chanona-Vilchis JG, Mikami Y, Hong SR, Teramoto N, Ali-Fehmi R, Barbuto D, Rutgers JKL, Silva EG. New pattern-based personalized risk stratification system for endocervical adenocarcinoma with important clinical implications and surgical outcome. Gynecol Oncol 2016; 141:36-42. [PMID: 27016227 DOI: 10.1016/j.ygyno.2016.02.028] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 01/18/2016] [Accepted: 02/21/2016] [Indexed: 11/26/2022]
Abstract
We present a recently introduced three tier pattern-based histopathologic system to stratify endocervical adenocarcinoma (EAC) that better correlates with lymph node (LN) metastases than FIGO staging alone, and has the advantage of safely predicting node-negative disease in a large proportion of EAC patients. The system consists of stratifying EAC into one of three patterns: pattern A tumors characterized by well-demarcated glands frequently forming clusters or groups with relative lobular architecture and lacking destructive stromal invasion or lymphovascular invasion (LVI), pattern B tumors demonstrating localized destructive invasion (small clusters or individual tumor cells within desmoplastic stroma often arising from pattern A glands), and pattern C tumors with diffusely infiltrative glands and associated desmoplastic response. Three hundred and fifty-two cases were included; mean follow-up 52.8 months. Seventy-three patients (21%) had pattern A tumors; all were stage I and there were no LN metastases or recurrences. Pattern B was seen in 90 tumors (26%); all were stage I and LVI was seen in 24 cases (26.6%). Nodal disease was found in only 4 (4.4%) pattern B tumors (one IA2, two IB1, one IB not further specified (NOS)), each of which showed LVI. Pattern C was found in 189 cases (54%), 117 had LVI (61.9%) and 17% were stage II or greater. Forty-five (23.8%) patients showed LN metastases (one IA1, 14 IB1, 5 IB2, 5 IB NOS, 11 II, 5 III and 4 IV) and recurrences were recorded in 41 (21.7%) patients. This new risk stratification system identifies a subset of stage I patients with essentially no risk of nodal disease, suggesting that patients with pattern A tumors can be spared lymphadenectomy. Patients with pattern B tumors rarely present with LN metastases, and sentinel LN examination could potentially identify these patients. Surgical treatment with nodal resection is justified in patients with pattern C tumors.
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Affiliation(s)
| | - Toni-Ann Mistretta
- Baylor College of Medicine, Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - Andrea Diaz De Vivar
- Baylor College of Medicine, Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - Kay J Park
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Golnar Rasty
- University Health Network, University of Toronto, Toronto, Canada
| | | | | | - Sung R Hong
- Cheil General Hospital & Women's Healthcare Center, Dankook University, Seoul, Republic of Korea
| | | | | | | | | | - Elvio G Silva
- Cedars-Sinai Medical Center, Los Angeles, CA, USA; The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Pereira EB, El Hachem L, Momeni M, Eisen R, Gretz H. Isolated Ovarian Recurrence of Endocervical Adenocarcinoma In Situ. J Gynecol Surg 2016. [DOI: 10.1089/gyn.2015.0120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Elena B. Pereira
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Science, Mount Sinai Hospital, Mount Sinai Health System, New York, NY
| | - Lena El Hachem
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Science, Mount Sinai Hospital, Mount Sinai Health System, New York, NY
| | - Mazdak Momeni
- Department of Obstetrics and Gynecology, Loma Linda University Medical Center, Loma Linda, CA
| | - Richard Eisen
- Department of Pathology, Greenwich Hospital, Greenwich, CT
| | - Herbert Gretz
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Science, Mount Sinai Hospital, Mount Sinai Health System, New York, NY
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Gynecologic Cancer InterGroup (GCIG) consensus review for cervical adenocarcinoma. Int J Gynecol Cancer 2015; 24:S96-101. [PMID: 25341589 DOI: 10.1097/igc.0000000000000263] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Cervical adenocarcinoma is known to be less common than squamous cell carcinoma of the cervix comprising approximately 25% of all cervical carcinomas. Differences in associated human papillomavirus types, patterns of spread, and prognosis call for treatments that are not always like those for squamous cancers. In this review, we report a consensus developed by the Gynecologic Cancer InterGroup surrounding cervical adenocarcinoma for epidemiology, pathology, treatment, and unanswered questions. Prospective clinical trials are needed to help develop treatment guidelines.
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Loureiro J, Oliva E. The spectrum of cervical glandular neoplasia and issues in differential diagnosis. Arch Pathol Lab Med 2014; 138:453-83. [PMID: 24678677 DOI: 10.5858/arpa.2012-0493-ra] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT Premalignant and malignant glandular lesions of the cervix are known to often cause diagnostic problems with a variety of benign (more common) as well as other malignant mimics, the latter setting often being represented by secondary involvement by endometrioid endometrial carcinoma especially in small samplings. OBJECTIVE To highlight key histologic features and immunohistochemical markers that may be helpful in the distinction of in situ endocervical carcinoma from benign glandular proliferations, and those that separate different subtypes of invasive endocervical carcinoma, as well as invasive carcinoma from other carcinomas secondarily involving the cervix and nonneoplastic proliferations of the cervix. CONCLUSIONS Clinical and morphologic features as well as immunohistochemistry results should be used in conjunction in the differential diagnosis of glandular proliferations of the cervix, as correct interpretation has major clinical consequences for the patient in most instances (especially benign versus malignant). Immunohistochemical markers should be used as part of a panel of antibodies, as exceptions may occur to the usual pattern of staining, and if used singly, they may mislead the pathologist to establish a wrong diagnosis.
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Affiliation(s)
- Joana Loureiro
- From the Department of Pathology, Instituto Português de Oncologia, Porto, Portugal (Dr Loureiro); and the Department of Pathology, Massachusetts General Hospital, Boston (Dr Oliva)
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Reade CJ, Eiriksson LR, Covens A. Surgery for early stage cervical cancer: How radical should it be? Gynecol Oncol 2013; 131:222-30. [DOI: 10.1016/j.ygyno.2013.07.078] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 07/03/2013] [Accepted: 07/07/2013] [Indexed: 11/26/2022]
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Hirschowitz L, Nucci M, Zaino RJ. Problematic issues in the staging of endometrial, cervical and vulval carcinomas. Histopathology 2013; 62:176-202. [PMID: 23240675 DOI: 10.1111/his.12058] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The International Federation of Gynecology and Obstetrics (FIGO) staging of tumours of the uterine corpus, cervix and vulva was revised in 2009. The greatest impact of the revised staging was on carcinomas of the uterine corpus. Uterine sarcomas are now staged separately. Changes to the staging system for vulvar carcinomas largely reflect the significance of lymph node status. Only minor amendments have been introduced for cervical carcinomas, which remain the only gynaecological tumours to be staged clinically. These revisions, based on recent evidence, require careful, more detailed assessment of several histological parameters at each anatomical site. The present review deals with the evidence and rationale underpinning the revisions, and includes practical guidance on tumour staging. This covers the assessment and measurement of myoinvasion and evaluation of cervical, parametrial, serosal and vaginal involvement in carcinomas of the uterine corpus; the identification and accurate measurement of stromal invasion in cervical and vulvar carcinomas; the assessment of unusual variants of carcinoma at each of these sites; and the assessment of lymph node involvement.
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Affiliation(s)
- Lynn Hirschowitz
- Department of Cellular Pathology, Birmingham Women's NHS Trust, Birmingham, UK.
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Baalbergen A, Veenstra Y, Stalpers L. Primary surgery versus primary radiotherapy with or without chemotherapy for early adenocarcinoma of the uterine cervix. Cochrane Database Syst Rev 2013; 2013:CD006248. [PMID: 23440805 PMCID: PMC7387233 DOI: 10.1002/14651858.cd006248.pub3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND For early squamous cell carcinoma of the uterine cervix, the outcome is similar after either primary surgery or primary radiotherapy. There are reports that this is not the case for early adenocarcinoma (AC) of the uterine cervix: some studies have reported that the outcome is better after primary surgery. There are no systematic reviews about surgery versus chemoradiation in the treatment of cervical cancer. This is an updated version of the original Cochrane review published in Cochrane Database of Systematic Reviews 2006, Issue 4. Art. No.: CD006248. DOI: 10.1002/14651858.CD006248. OBJECTIVES The objectives of this review were to compare the effectiveness and safety of primary surgery for early stage AC of the uterine cervix with primary radiotherapy or chemoradiation. SEARCH METHODS We searched Cochrane Central Register of Controlled Trials (CENTRAL) Issue 3, 2009, MEDLINE (1950 to July week 5, 2009), EMBASE (1980 to week 32, 2009) and we also searched the related articles feature of PubMed and the Web of Science. We also checked the reference lists of articles. For this update, the searches were re-run in June 2012: MEDLINE 2009 to June week 2, 2012, EMBASE 2009 to 2012 week 24, CENTRAL Issue 6, 2012, Cochrane Gynaecological Specialised Register June 2012. SELECTION CRITERIA Studies of treatment of patients with early AC of the uterine cervix were included. Treatment included surgery, surgery followed by radiotherapy, radiotherapy and chemoradiation. DATA COLLECTION AND ANALYSIS Forty-three studies were selected by the search strategy and 30 studies were excluded. Twelve studies were considered for inclusion. Except for one randomised controlled trial (RCT), all other studies were retrospective cohort studies with variable methodological quality and had limitations of a retrospective study. Comparing the results from these retrospective studies was not possible due to diverging treatment strategies. MAIN RESULTS Analysis of a subgroup of one RCT showed that surgery for early cervical AC was better than radiotherapy. However, the majority of operated patients required adjuvant radiotherapy, which is associated with greater morbidity. Furthermore, the radiotherapy in this study was not optimal, and surgery was not compared to chemoradiation, which is currently recommended in most centres. Finally, modern imaging techniques (i.e. magnetic resonance imaging (MRI) and positive emission tomography - computed tomography (PET-CT) scanning) allow better selection of patients and node-negative patients can now be more easily identified for surgery, thereby reducing the risk of 'double trouble' caused by surgery and adjuvant radiotherapy. AUTHORS' CONCLUSIONS We recommend surgery for early-stage AC of the uterine cervix in carefully staged patients. Primary chemoradiation remains a second best alternative for patients unfit for surgery; chemoradiation is probably first choice in patients with (MRI or PET-CT-suspected) positive lymph nodes. Since the last version of this review no new studies were found.
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Affiliation(s)
- Astrid Baalbergen
- Department of Obstetrics and Gynaecology, Reinier de Graaf Groep, Delft, Netherlands.
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Murakami I, Fujii T, Kameyama K, Iwata T, Saito M, Kubushiro K, Aoki D. Tumor volume and lymphovascular space invasion as a prognostic factor in early invasive adenocarcinoma of the cervix. J Gynecol Oncol 2012; 23:153-8. [PMID: 22808357 PMCID: PMC3395010 DOI: 10.3802/jgo.2012.23.3.153] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 05/14/2012] [Accepted: 05/20/2012] [Indexed: 11/30/2022] Open
Abstract
Objective The aim of this study was to investigate the risk and recurrence of early invasive adenocarcinoma of the cervix, and to determine whether non-radical methods of management could be performed. Methods The medical and histopathological records of 50 patients with early invasive adenocarcinoma of the cervix treated at Keio University Hospital between 1993 and 2005 were reviewed, and compared with the literature. Results The median follow-up period was 64.3 months. The depth of stromal invasion was ≤3 mm in 33 cases and >3 mm, but ≤5 mm in 17 cases. The horizontal spread was ≤7 mm in 25 cases and >7 mm in 25 cases. One of the 33 cases that had tumor volumes of ≤500 mm3, and three of the 17 cases with tumor volumes of >500 mm3 were positive for lymph node metastasis. When our data were combined with previously reported results, statistically significant differences were observed between the tumor volume and the frequency of pelvic lymph node metastasis/the rate of recurrence (p<0.0001). The frequency of pelvic lymph node metastases was significantly higher in the lymphovascular space invasion (LVSI)-positive group than in the LVSI-negative group (p=0.02). No adnexal metastasis or parametrial involvement was noted. Conclusion Assessment of the depth of stromal invasion, tumor volume, and LVSI is critical for selecting an appropriate therapeutic modality. Non-radical methods of management are considered suitable for patients with LVSI-negative adenocarcinoma of the cervix exhibiting a stromal invasion depth of ≤5 mm and a tumor volume of ≤500 mm3.
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Affiliation(s)
- Isao Murakami
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
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Do FIGO Stage IA and Small (≤2 cm) IB1 Cervical Adenocarcinomas Have a Good Prognosis and Warrant Less Radical Surgery? Int J Gynecol Cancer 2012; 22:291-5. [DOI: 10.1097/igc.0b013e3182339fff] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Spoozak L, Lewin SN, Burke WM, Deutsch I, Sun X, Herzog TJ, Wright JD. Microinvasive adenocarcinoma of the cervix. Am J Obstet Gynecol 2012; 206:80.e1-6. [PMID: 21939955 DOI: 10.1016/j.ajog.2011.07.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 06/18/2011] [Accepted: 07/15/2011] [Indexed: 11/15/2022]
Abstract
OBJECTIVE We compared the outcomes of microinvasive squamous cell carcinoma and adenocarcinoma of the cervix and examined the safety of fertility-conserving treatment. STUDY DESIGN The Surveillance, Epidemiology, and End Results database was used to identify all women with stage IA1 and IA2 cervical carcinoma diagnosed from 1988 to 2005. The treatment and outcomes of women with adenocarcinomas were compared with squamous cell carcinomas. RESULTS A total of 3987 women including 988 with adenocarcinomas (24.8%) were identified. Women with adenocarcinoma were more often white and were younger (P < .05 for all). Survival for stage IA1 adenocarcinomas (hazard ratio, 0.79; 95% confidence interval, 0.21-2.94) was similar to that of women with squamous cell tumors. For stage IA2 tumors, survival was similar for squamous cell and adenocarcinomas (hazard ratio, 0.51; 95% confidence interval, 0.18-1.47). For stage IA1 and IA2 adenocarcinomas, survival was similar for conization and hysterectomy. CONCLUSION Survival is similar for microinvasive adenocarcinomas and squamous cell carcinomas. Conization appears to be adequate treatment for microinvasive adenocarcinoma.
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Affiliation(s)
- Lori Spoozak
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
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Hou J, Goldberg GL, Qualls CR, Kuo DY, Forman A, Smith HO. Risk factors for poor prognosis in microinvasive adenocarcinoma of the uterine cervix (IA1 and IA2): A pooled analysis. Gynecol Oncol 2011; 121:135-42. [DOI: 10.1016/j.ygyno.2010.11.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 11/18/2010] [Accepted: 11/23/2010] [Indexed: 11/15/2022]
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Analysis of Outcomes of Microinvasive Adenocarcinoma of the Uterine Cervix by Treatment Type. Obstet Gynecol 2010; 116:1150-7. [DOI: 10.1097/aog.0b013e3181f74062] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Maldonado PA, Negrini LA, Ethur JDS, Oliveira L, Corrêa MDC, Becker LV, Zanin RF, Morsch VM, Schetinger MRC. Nucleotide degrading enzymes in platelets from uterine cervical neoplasia patients treated with conization or radiotherapy. Biomed Pharmacother 2010; 64:499-504. [PMID: 20347573 DOI: 10.1016/j.biopha.2010.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Accepted: 02/21/2010] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Uterine cervical neoplasia is an important worldwide malignancy sometimes associated with thrombosis. Ectonucleotidases are membrane-bound enzymes which participate in thromboregulation by hydrolyzing adenine nucleotides in the extracellular medium. In this sense, we aimed to investigate their activity in patients with uterine cervical neoplasia. METHODS We evaluated NTPDase and 5'-nucleotidase activities from patients previously treated for uterine cervical neoplasia with either conization or radiotherapy (RTX). These patients were divided into four groups: two conization groups (I and II) and two RTX groups (III and IV), which were further divided based on the amount of time that had passed since the conclusion of their treatment, where groups I and III were extended-remission-period groups (patients with 1 to 5 years elapsed after the conclusion of treatment), and groups II and IV were recently treated patients (treated up to three months before). RESULTS For both conization and RTX groups, ATP and ADP hydrolysis decreased in the extended-remission groups when compared to the control and recently treated groups. On the other hand, AMP hydrolysis was decreased in all the treated groups (both conization and RTX) compared to the control. CD39 expression was decreased in extended-remission groups (I and III) when compared to the other groups. CONCLUSIONS NTPDase protects against platelet aggregation and 5'-nucleotidase is more involved in the control of adenosine formation.
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Affiliation(s)
- Paula Acosta Maldonado
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
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Baalbergen A, Veenstra Y, Stalpers LL, Ansink AC. Primary surgery versus primary radiation therapy with or without chemotherapy for early adenocarcinoma of the uterine cervix. Cochrane Database Syst Rev 2010:CD006248. [PMID: 20091590 DOI: 10.1002/14651858.cd006248.pub2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND For early squamous cell carcinoma of the uterine cervix, the outcome is similar after either primary surgery or primary radiotherapy. There are reports that this is not the case for early adenocarcinoma (AC) of the uterine cervix: some studies have reported that the outcome is better after primary surgery. There are no systematic reviews about surgery versus chemoradiation in the treatment of cervical cancer. OBJECTIVES The objectives of this review were to compare the effectiveness and safety of primary surgery for early stage AC of the uterine cervix with primary radiotherapy or chemoradiation. SEARCH STRATEGY We searched Cochrane Central Register of Controlled Trials (CENTRAL) Issue 3, 2009, MEDLINE (1950 to July week 5, 2009), EMBASE (1980 to week 32, 2009) and we also searched the related articles feature of PubMed and the Web of Science. We also checked the reference lists of articles. SELECTION CRITERIA Studies of treatment of patients with early AC of the uterine cervix were included. Treatment included surgery, surgery followed by radiotherapy, radiotherapy and chemoradiation. DATA COLLECTION AND ANALYSIS Forty-three studies were selected by the search strategy and thirty studies were excluded. Twelve studies were considered for inclusion. Except for one randomised controlled trial (RCT), all other studies were retrospective cohort studies with variable methodological quality and had limitations of a retrospective study. Comparing the results from these retrospective studies was not possible due to diverging treatment strategies. MAIN RESULTS Analysis of a subgroup of one RCT showed that surgery for early cervical AC was better than RT. However, the majority of operated patients required adjuvant radiotherapy, which is associated with greater morbidity. Furthermore, the radiotherapy in this study was not optimal, and surgery was not compared to chemoradiation, which is currently recommended in most centres. Finally, modern imaging techniques, i.e. MR-imaging and PET-CT-scanning, allow better selection of patients and node negative patients can now be more easily identified for surgery, there by reducing the risk of 'double trouble' caused by surgery and adjuvant radiotherapy. AUTHORS' CONCLUSIONS We recommend surgery for early stage AC of the uterine cervix in carefully staged patients. Primary chemoradiation remains a second best alternative for patients unfit for surgery; chemoradiation is probably first choice in patients with (MRI or PET-CT-suspected) positive lymph nodes.
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Affiliation(s)
- Astrid Baalbergen
- Department of Obstetrics and Gynaecology, Reinier de Graaf Groep, Postbus 5011, Delft, Netherlands, 2600 GA
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Bisseling KCHM, Bekkers RLM, Rome RM, Quinn MA. Treatment of microinvasive adenocarcinoma of the uterine cervix: a retrospective study and review of the literature. Gynecol Oncol 2007; 107:424-30. [PMID: 17707895 DOI: 10.1016/j.ygyno.2007.07.062] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Revised: 07/04/2007] [Accepted: 07/18/2007] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To investigate the efficacy of different treatment modalities used in microinvasive adenocarcinoma (AC) of the uterine cervix (FIGO stage IA1 and IA2), and review the literature. METHODS Medical and histopathological records of 38 patients treated for microinvasive AC of the cervix were studied retrospectively, and compared with the literature. RESULTS Twenty-nine patients had stage IA1 and nine stage IA2 cancers. Treatment modalities ranged from radical hysterectomy with pelvic lymph node dissection (PLND) to conization only. Eighteen patients underwent a conization, including two patients with stage IA2 disease, of whom 11 had 18 pregnancies in total, resulting in 13 live births, two terminations and three spontaneous abortions. In two patients a hysterectomy was performed after pregnancy. No recurrences were noted during an average follow-up of 72 months. In the literature 1565 patients were reported. Of the 814 patients undergoing PLND, 12 had positive nodes. Lymphovascular space invasion (LVSI) was present in 25 patients, all without node involvement. None of the 356 described parametria were involved. Twenty-nine recurrences occurred. In total, 21 pregnancies with 16 live births occurred in those patients treated to preserve fertility. CONCLUSIONS There is no uniformity in the treatment of microinvasive AC of the uterine cervix. For stage IA1 disease, conization seems to be safe and PLND is only recommended where LVSI is present. Although the number of reported cases is small, for stage IA2 disease, conization with PLND in case of LVSI seems advisable. More studies are desirable to define the optimal treatment for patients with microinvasive AC of the cervix, especially with regard to those patients with stage IA2 disease.
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Affiliation(s)
- Karin C H M Bisseling
- Department of Gynecology and Obstetrics, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Poynor EA, Marshall D, Sonoda Y, Slomovitz BM, Barakat RR, Soslow RA. Clinicopathologic features of early adenocarcinoma of the cervix initially managed with cervical conization. Gynecol Oncol 2006; 103:960-5. [PMID: 16860853 DOI: 10.1016/j.ygyno.2006.05.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2006] [Revised: 05/30/2006] [Accepted: 05/31/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To evaluate the clinicopathologic features of microinvasive adenocarcinoma of the cervix in order to guide the management of patients with this disease. MATERIALS AND METHODS A retrospective review was conducted of patients diagnosed with early invasive, <or=5 mm stromal invasion, adenocarcinoma of the cervix by a cervical conization between 1992 and 1999 at our institution. Information was abstracted on tumor histopathologic type, grade, and depth of invasion as well as presence or absence of disease at the margins of conization, lymphovascular spread, and the presence of disease in subsequent pathology specimens including the parametrium and pelvic lymph nodes (PLNs). RESULTS Thirty-three patients were identified. The mean age of the patients in the study population was 41.6 years (range, 29-53 years). Fifteen women were age 35 years or younger. Six patients had invasion<or=1 mm, 9 patients had invasion>1 mm and <or=2 mm, 6 patients had invasion>2 mm and <or=3 mm, 6 patients had invasion>3 mm and <or=4 mm, and 6 patients had invasion>4 mm and <or=5 mm. Three patients were treated with a conization only, 4 patients were treated with a simple hysterectomy, 25 patients were treated with a radical hysterectomy (RH) and PLN dissection (PLND), and 1 patient was treated with a radical trachelectomy and PLND. Ten patients had positive conization margins for invasive cancer, 3 patients had margins positive for adenocarcinoma in situ, 14 patients had negative margins, and in 6 patients the margin status could not be evaluated. Of the 10 patients with positive margins, 5 of 10 (50%) had residual disease in the subsequent surgical specimen. Three patients who underwent definitive management with conization alone originally had positive margins, underwent a second repeat conization, and are included in this group. Of the 16 patients with negative margins, no patient had residual disease in a subsequent surgical specimen. Of the 25 patients who underwent a RH and PLND, none had parametrial involvement and none had PLN involvement. All patients remained without evidence of disease at median follow-up of 30 months. CONCLUSIONS Historically, the standard management of early invasive adenocarcinoma of the cervix has been controversial, and some clinicians continue to favor radical treatments. Based on the absence of parametrial spread and PLN involvement in early lesions, physicians and patients should consider treatment with conization with negative margins (when future fertility is desired) or simple hysterectomy. Prospective studies are required to document the safety of this approach.
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Affiliation(s)
- E A Poynor
- Gynecology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
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Al-Nafussi A. Histopathological challenges in assessing invasion in squamous, glandular neoplasia of the cervix. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.cdip.2006.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Maldonado PA, Negrini LA, Kaizer RR, Zanin RF, Araújo MDC, Battisti V, Morsch VM, Schetinger MRC. Oxidative status in patients submitted to conization and radiation treatments for uterine cervix neoplasia. Clin Chim Acta 2006; 366:174-8. [PMID: 16266698 DOI: 10.1016/j.cca.2005.09.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2005] [Revised: 09/26/2005] [Accepted: 09/27/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Cervical cancer is a major cause of morbidity among women. We investigated the treatment effect on oxidative status from patients submitted to radiotherapy or conization surgery to high-grade SIL (squamous intraepithelial lesion) treatment, and oxidative profile from patients newly diagnosed for uterine cervix cancer, without treatment. METHODS We determined the catalase activity in blood, reduced glutathione (GSH) in plasma, TBARS and protein carbonyl content from serum samples of the patients. RESULTS The catalase activity, GSH levels, TBARS and protein carbonyl content had no statistical differences related to the controls, neither when the 2 treatments were compared, possibly because the antioxidant defense may be acting in the first period of the neoplasic transformation, and maybe indicating a possible arrest of the tumor cells caused by the efficiency of the treatments. In the non-treated patients, TBARS and protein carbonyl contents, GSH levels and catalase activity were shown to be increased comparing with the treated patients and compared with the controls indicating an tumor effect on oxidative profile, and the antioxidant activity been increased in the beginning of the tumor development. CONCLUSIONS We suggest that the treatments were efficient in arrest of the tumor.
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Affiliation(s)
- Paula Acosta Maldonado
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
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Abstract
Cervical adenocarcinomas are increasing in incidence each year, comprising up to 25% of all cervical cancers diagnosed in the United States. This increase largely reflects the inherent difficulty in detecting glandular precursor lesions using current screening practices. However, there also appears to be a recent shift in the epidemiology of the disease process with younger women being diagnosed more frequently. Fertility-sparing surgery is an option for selected patients with adenocarcinoma in situ or stage IA(1) cervical adenocarcinoma. Simple hysterectomy should be performed at the completion of childbearing or when preserving fertility is not an issue. The treatment of choice for most women with stage IA(2) to IB(1) disease is radical hysterectomy. Fewer than 20% of patients will need adjuvant therapy and the cure rate is excellent. Primary radiation with weekly cisplatin may be the best option for patients with stage IB(2) to IIA cervical adenocarcinoma. Patients treated initially by primary radical surgery will almost certainly require postoperative chemoradiation because of high-risk surgical-pathologic features. Patients with stage IIB to IVA disease should also receive primary radiation with weekly cisplatin. Management of recurrence should be individualized, depending on the location of disease and the type of previous therapy.
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Affiliation(s)
- John O Schorge
- Division of Gynecologic Oncology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, J7.124, Dallas, TX 75390, USA.
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