A Rare Case of Cardiac Metastasis From Colon Cancer

It is very rare for colorectal neoplasms to metastasize to the heart in the worldwide medical literature; only a single case of well-documented colorectal cancer metastasis to the left atrium was found. the case of a 66-year-old man is explained in this paper, who was suffering from metastatic adenocarcinoma of the colon that included the left atrium. in transthoracic and transesophageal echocardiography, a large multilobulated mass was present in the left atrium. an accidental pulmonary mass was also seen in a lung spiral ct scan. the cardiac mass was taken out, and a biopsy was obtained from the pulmonary mass. adenocarcinoma was seen in histological assessment. immunohistochemical staining was carried out to examine the expression of cytokeratin 7, cytokeratin 20, and caudal-related homeobox transcription factor 2 (cdx2) to determine the origin of the adenocarcinoma. in addition, the expression of these proteins was linked to the attributes of the patient and tumor. post-surgery transesophageal echocardiography showed normal left ventricle and right ventricle function with no evidence of left atrium mass. therefore, we suggest that asymptomatic cancer patients with a history of colorectal cancer and who have developed cardiac symptoms should be immediately examined for potential cardiac metastasis.