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American Journal of Public Health Research
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The Implementation of a Tele-Homecare System with Service Oriented Architecture and HL7 Message Transmission Standard
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The Influence of Ethanol on Pyruvate Kinases Activity in Vivo, in Vitro, in Silico
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Clinical and Histological Features in Wegener Granulomatosis
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Anne Lanham, Lillian Mwanri

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Synchronous Bilateral Breast Cancer (SBBC): Report of a Case with Review of Literature

Mazaher Ramezani, Akram Amiri, Farhad Kavousi, Masoud Sadeghi*

Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran

Abstract: The incidence of synchronous bilateral invasive breast cancer (SBBC) is reported to range from 0.8%-3.0%. Lower disease-free survival and high rates of distant metastasis is a recognized feature of bilateral synchronous tumors, which therefore have a worse overall survival compared to unilateral tumors. Early detection of the contralateral tumor is of utmost importance emphasizing the significance of breast self-examination. Here we report a case of SBBC with invasive ductal carcinoma on both sides in a 50-year-old lady. The pathology report on both sides was infiltrating ductal carcinoma and ductal carcinoma in situ, nuclear grade of ІІ/ІІІ and histologic grade of II/III. Perineural invasion was present on both sides but vascular invasion only on the right side. In conclusion, SBBC is rare, but is important because it may have worse prognosis, different hormone receptor status and treatment modality. Early detection with breast self-examination is highly emphasized.

Keywords: synchronous, bilateral, breast cancer, case report

Citation: Mazaher Ramezani, Akram Amiri, Farhad Kavousi, Masoud Sadeghi, Synchronous Bilateral Breast Cancer (SBBC): Report of a Case with Review of Literature. American Journal of Medical Case Reports, 5 (12). 301-303. January 2017. doi:10.12691/ajmcr-5-12-5

1. Introduction

Bilateral breast cancer (BBC) incidence is estimated to be between 0.3 to 12% [1]. It is categorized as synchronous bilateral breast cancer (SBBC) or metachronous bilateral breast cancer (MBBC). The incidence of SBBC is 1% and that of MBBC 7.0 % [2]. Different publications suggest the same time to the same year for considering SBBC. Most of the publications proposed the contralateral tumor that was detected within the first 6 months as SBBC, tumors that developed after 6 months as MBBC [3]. The incidence of SBBC is reported to range from 0.8%-3.0%; largely reflecting differing definitions used for synchronous diagnoses, with cutoffs ranging from within 3-12 months of initial diagnosis [4]. Synchronicity/ meta chronicity are usually associated with local and lymphatic spread and with blood-borne spread to lungs, bones, and liver [5]. SBBC is an uncommon presentation, and the management of patients with this disease is not well established. Lower disease-free survival and high rates of distant metastasis is a recognized feature of bilateral synchronous tumors, which therefore have a worse overall survival compared to unilateral tumors [6]. In SBBC patients, molecular analysis showed discordant mutations in all cases, supporting the diagnosis of de novo bilateral primary BCs. In patients with lymph node metastases, the primary BC and metastases shared the same mutations, revealing a metastatic lesion [7]. Contradictory data exists concerning the prognosis of patients with SBBC. Most authors report a worse prognosis for SBBC patients compared to unilateral BC patients. There are a few studies that did not support these findings [8]. The data indicate that multifocal (MF), multicentric (MC), and SBBCs are more aggressive and have an equivalent or moderately poorer survival rate compared with unilateral cases [9]. Here we report a case of SBBC with invasive ductal carcinoma on both sides in a 50-year-old lady.

2. Case Report

A 50-year-old lady was admitted in surgery department with chief complaint of bilateral palpable breast masses since 6 months ago on June 7th, 2016. The masses were non-tender and without discharge. She was a housewife, married and was living in a village near Harseen, a city in Kermanshah province, Iran. She was the first of the seven sisters. There was no family history except for cystic lesion of the breast in the 4th sister without any treatment or follow-up. There was no past medical or drug history. She was not smoker or opium addict. Physical examination was unremarkable except for bilateral breast masses measuring about 5.5 and 5 cm in right and left breasts, respectively. The patient underwent surgery on June 9th 2016 with frozen section study. On the right side, the gross specimen consisted of a piece of fibro-fatty tissue measuring 5*4*1.5 cm containing two firm masses measuring 2.5 and 1.6 cm with fatty tissue invasion. On the left side, the gross specimen consisted of a piece of fibro-fatty tissue measuring 4*3*1 cm with a firm creamy yellow mass measuring 2.5 cm. Then bilateral mastectomy and lymph node dissection were done in the same session. The pathology report on both sides was infiltrating ductal carcinoma and ductal carcinoma in situ, nuclear grade of 2/3 and histologic grade of II/III (Figure 1 & Figure 2). In situ component was 30% versus 60% of surface area in right and left sides respectively. The diameter of tumors on the right side was 4.1 cm and on the left was 2.5 cm. Perineural invasion was present on both sides but vascular invasion only on the right side. On the mastectomy specimens the remnant of the right breast showed infiltrating ductal carcinoma (0.6 cm) and ductal carcinoma in situ, but in the left side, only remnant of ductal carcinoma in situ (low grade, 0.55 mm) was present. The left side showed fibrocystic change and fibroadenoma. Sentinel lymph node of the right and nine isolated lymph nodes of the left axillae were free of tumor. Surgical margins were free of tumor. The patient was in good condition in her admission for the 5th course of chemotherapy on October 6th, 2016 and there was only non-productive cough in her history and physical examination.

Figure 1. Right breast infiltrating ductal carcinoma and ductal carcinoma in situ, Hematoxylin-Eosin stain (x100)

Figure 2. Left breast infiltrating ductal carcinoma, Hematoxylin-Eosin stain (x100)

3. Discussion

Early detection of the contralateral tumor is of utmost importance emphasizing the significance of breast self-examination [5]. Moreover, BBC is mostly lobular carcinomas, but Kappikeri and Kriplani reported a 56-year-old lady with infiltrating ductal carcinoma (IDC) as the primary carcinoma and lobular carcinoma as the secondary [5]. Manea et al. [1] reported SBBC in a young patient complicated in its evolution by ovarian metastases. This form of metastasis is rare in young women and occurs in advanced stages of the disease. Jobsen et al. [2] noted MBBC showed a significant higher local failure compared to UBC and SBBC compared to MBBC and UBC had a significant higher distant metastases rate [3], disease-specific survival and OS were significantly worse for SBBC compared to UBC and MBBC [4], and the OS for MBBC compared to UBC, was significantly better [2].

In the study of Meltem Baykara et al. [3] metachronous and synchronous groups showed similar age, menopausal status, tumor type, HER2/neu expression; but the family history, tumor grade, tumor stage, ER-negativity rate, local and distant metastases rates, surgery, adjuvant chemotherapy application rates were identified as significantly different. Although BBC is not frequent, MCBCis different from MFBC by having more advanced grade, stage, less ER expression, more frequent rates of local relapse and distant metastasis and better response to chemotherapy in case of relapse/metastasis [3]. Another study [4] demonstrated that among women with synchronous bilateral ER+/HER2- BC, recurrence score were concordant in 67% of cases. Concordance rates may be higher in older women or among those with comparable levels of PR expression. These data suggest that testing of both tumors should be considered in patients who are candidates for adjuvant chemotherapy.

There are no consistent evidence-based guidelines for the management of SBBC and treatment decisions are often made based on the primary tumor with the most high-risk features (i.e., hormone receptor status, HER2 status, size, grade, lymphovascular invasion, and others) [4]. Esclovon et al. [10] reported a 59 years old woman with ER and PR negativity and HER2 /neu positivity on the right breast mass and the opposite results on the incidentally found left breast invasive ductal carcinoma. This different biological behavior mandates different treatment modalities for each side. Schmid et al. [8] compared 46 SBBC with 100 unilateral BCs and found no significant difference in disease –specific survival. Another group demonstrated that the five-year survival rates and recurrence rates were not statistically different among three groups of multifocal, unilateral multi centric and bilateral synchronous tumors [9]. Ursaru and colleagues [11] concluded that patients in the 4th decade diagnosed with unilateral BC are at risk of developing BBC. Piero et al. [12] reported a 44-year-old woman presenting SBBC and characteristic mucocutaneous lesions of Cowden syndrome, confirmed by PTEN gene mutation analysis. The skin lesions showed the characteristic findings of tricholemmoma and concluded that SBBC with early onset suggests a hereditary predisposition. Thus, analysis of PTEN expression abnormality, easily assessed by immunohistochemistry, may be of clinical value to screen those patients with CS. Sostaric Zadro and the colleagues [13] reported a 79-year-old lady with SBBC of invasive ductal carcinoma who responded to a bilateral mastectomy, lymphadenectomy, and radiotherapy.

4. Conclusion

SBBC is rare, but is important because it may have worse prognosis, different hormone receptor status and treatment modality. Early detection with breast self-examination is highly emphasized.

Acknowledgments

The help of Mrs. Sholeh Akradi in providing the clinical history of the patient is highly acknowledged by the authors.

References

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