Metastatic seeding of colon adenocarcinoma manifesting as synchronous breast and chest wall localization: report of a case

Breast and Axillary Metastasis with Colon Cancer Primary Origin

Introduction: Colon cancer is the third most common cancer in gastrointestinal (GI) malignancies. Colorectal cancer most commonly metastasizes to the liver and lung. Metastasis to the breast from extramammary tumors are uncommon and metastatic colon carcinoma (MCC) to the breast is extremely rare. Case Presentation: We reported a 43-year-old woman with breast metastasis with colon origin. The patient presented with breast mass with mucinous adenocarcinoma. Conclusions: Metastasis to the breast from the colonic origin is possible. However, its occurrence is rare when mucinous adenocarcinoma of the breast mass is reported, and GI origin must be considered.

Colonic mucinous adenocarcinoma with secondary in the breast: A case report and literature review

INTRODUCTION

Secondary breast metastasis from the colonic origin is a rare phenomenon in the literature, and an estimation of an increase in the incidence has been reported in the literature to reach approximately 7%.

PRESENTATION OF CASE

We report a case of a 56-year-old male with constipation who underwent extended right hemicolectomy after confirmation of adenocarcinoma of the right colon. The patient was diagnosed with multiple metastases over 5 years and endured numerous resections of the costal margins, ribs, diaphragm, liver wedges, abdominal wall, and the small bowel. Eventually, the patient's right breast mass measured about 2.1 cm on ultrasonography and revealed metastatic adenocarcinoma of the same colonic origin. The patient started on palliative chemotherapy and was deceased after 11 months.

DISCUSSION

Comparing this case to the 56 similar cases, we found our case with an almost average time to metastasize but unfortunately with aggressive metastatic behavior to various organs. Nevertheless, the triple assessment of the breast by physical examination, radiological, and pathological studies assisted in diagnosis and early establishment of the treatment. Currently, there is no definitive guideline for the management of secondary breast metastasis from the colonic origin. We estimated the average survival rate as 6.1 months, and it was reported to reach an average of 8-10 months in the literature.

CONCLUSION

During the surveillance program of colorectal cancer, a full-body examination is warranted. Secondary breast cancer metastasis from colorectal origin behaves aggressively and a multidisciplinary approach is essential for the establishment of personalized treatment.

Breast metastasis from colorectal cancer treated by multimodal therapy: Case report and literature review

INTRODUCTION

Breast metastases from primary colorectal carcinoma are extremely rare, with only 45 cases being reported previously. Since the most common malignancy in the breast and axilla is primary breast cancer regardless of cancer history, non-hematologic metastases may be misdiagnosed initially. Nevertheless, differentiating breast metastases from primary breast cancer is crucial because of their differences in prognosis and management.

PATIENT CONCERNS

We present a case of a 44-year-old Asian woman who noticed a new right breast lump after undergoing surgery and chemotherapy for her primary sigmoid colon cancer.

DIAGNOSIS

Image and immunohistochemistry findings were consistent with breast metastasis from primary colorectal adenocarcinoma.

INTERVENTIONS

The patient underwent breast tumor excision and reinitiated chemotherapy.

OUTCOMES

The patient's disease progressed despite the interventions. She passed away 7 months after the detection of breast metastasis.

CONCLUSION

When a new breast lesion is detected in patients with colorectal cancer history, the physician should consider the possibility of breast metastasis due to the poor prognosis. If a biopsy is necessary, cancer history should be provided to the clinicians to prevent incorrect pathological interpretation. In establishing the diagnosis, certain immunohistochemical markers have been shown to be sensitive and specific in previously reported cases. The combination of tumor excision and chemotherapy was the most common strategy in managing this condition with inconsistent clinical outcomes.

Metastatic colonic adenocarcinoma in breast: report of two cases and review of the literature

Metastatic adenocarcinoma to the breast from an extramammary site is extremely rare. In the literature, the most current estimate is that extramammary metastases account for only 0.43% of all breast malignancies and that, of these extramammary sites, colon cancer metastases form a very small subset. Most commonly seen metastasis in breast is from a contralateral breast carcinoma, followed by metastasis from hematopoietic neoplasms, malignant melanoma, sarcoma, lung, prostate, and ovary and gastric neoplasms. Here we present two rare cases, in which colonic adenocarcinomas were found to metastasize to the breast. In both cases, core biopsies were obtained from the suspicious areas identified on mammogram. Histopathology revealed neoplastic proliferation of atypical glandular components within benign breast parenchyma which were morphologically consistent with metastatic adenocarcinoma. By immunohistochemical staining, it was confirmed that the neoplastic components were immunoreactive to colonic markers and nonreactive to breast markers, thus further supporting the morphologic findings. It is extremely important to make this distinction between primary breast cancer and a metastatic process, in order to provide the most effective and appropriate treatment for the patient and to avoid any harmful or unnecessary surgical procedures.

Primary sigmoid adenocarcinoma metastasis to the breast in a 28-year-old female: a case study and a review of literature

Metastasis to the breast from colorectal carcinoma is rare, only a few cases have been reported in the literature, and no cases have been reported in a young, 28-year-old patient. This report confirms the occurrence of the disease in a younger age group. The patient was referred to the Breast Clinic with a history of a gradually increasing lump in her right breast for two weeks' duration. On clinical examination, a 2-cm firm lump was noted in the upper inner quadrant of the right breast, which was clinically benign; however, histological examination of the breast core biopsy together with immunohistochemistry confirmed metastatic colorectal adenocarcinoma. The primary colorectal carcinoma was later confirmed to be a stage pT4N2M1 tumor, and the Duke stage was C1. Histology with immunohistochemistry is very important in the diagnosis of cases of this nature, but the clinical correlation should be taken into consideration at multidisciplinary team meetings to decide the final management of the patient.