Research
Oncology
Microinvasive adenocarcinoma of the cervix

Presented at the 42nd annual meeting on Women's Cancer of the Society of Gynecologic Oncologists, Orlando, FL, March 6-9, 2011.
https://doi.org/10.1016/j.ajog.2011.07.029Get rights and content

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.

Section snippets

Materials and Methods

The National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) database was utilized. SEER is a population-based cancer registry that includes approximately 26% of the US population.22 SEER is composed of a number of geographically distinct tumor registries. The demographic characteristics of the SEER registries have been previously characterized and reported.23 Data from SEER 17 registries was utilized. The study received approval from the Columbia University Institutional

Results

A total of 3987 women including 988 with adenocarcinomas (24.8%) and 2999 with squamous cell carcinomas with microinvasive disease (75.2%) were identified. The demographic and clinical variables of the cohort are displayed in Table 1. Stage IA1 tumors were noted in 554 of the women with adenocarcinomas (56.1%) and in 1610 of those with squamous neoplasms (53.7%), whereas 43.9% of women with adenocarcinomas and 46.3% of those with squamous cell carcinomas had stage IA2 tumors (P = .19). Women

Comment

Our analysis suggests 2 major findings for microinvasive cervical cancer. First, outcomes are similar for squamous cell carcinomas and adenocarcinomas. Second, conservative fertility-preserving treatment appears to be safe for women with stage IA1 and IA2 adenocarcinomas.

Given the concern that adenocarcinomas are associated with an inferior prognosis, prior staging systems have not acknowledged microinvasive adenocarcinomas as an entity. In contrast, most studies have suggested that women with

References (24)

Cited by (33)

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  • Primary treatment patterns and survival of cervical cancer in Sweden: A population-based Swedish Gynecologic Cancer Group Study

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    The objective in early stage of cervical cancer is therefore to reduce the risk for treatment-related morbidity e.g. offering fertility-sparing treatment. Hence, conisation is standard of care in stage IA1 [8–10], but in our study only one third of patients were treated accordingly. Instead simple hysterectomy was frequently performed.

  • Focus on mucinous adenocarcinoma of the uterine cervix

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  • Adenocarcinoma of the uterine cervix: Pathologic features, treatment options, clinical outcome and prognostic variables

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    Diagnostic imaging techniques, such as computed tomography [CT], magnetic resonance [MR], and eventually positron emission tomography [PET]/CT, should be used for an adequate staging at presentation, especially in patients with apparently locally advanced disease (National Cancer Comprehensive Network, 2019). Several studies on surgically- treated patients with stage Ia-IIa cervical cancer failed to detect different oncologic outcomes between adenocarcinoma and squamous cell carcinoma (Ruengkhachorn et al., 2016; Look et al., 1996; Harrison et al., 1993; Shingleton et al., 1995; Spoozak et al., 2012; Winer et al., 2015). Conversely, other investigations on patients with early stage disease who underwent primary radical hysterectomy with or without adjuvant radiotherapy or concurrent chemoradiation, reported a poorer disease-free survival [DFS] and overall survival [OS] for adenocarcinoma compared with squamous cell carcinoma (Irie et al., 2000; Nakanishi et al., 2000; Noh et al., 2014; Landoni et al., 1997; Hopkins and Morley, 1991; Park et al., 2010).

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The authors report no conflict of interest.

Cite this article as: Spoozak L, Lewin SN, Burke WM, et al. Microinvasive adenocarcinoma of the cervix. Am J Obstet Gynecol 2012;206:80.e1-6.

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