A 70-year-old woman presents with weight loss and a rectal mass. What organ is she at greatest risk for complications from her suspected malignancy?

• A. Kidney
• B. Liver
• C. Lung
• D. Skin

Answer: (B)

In this scenario, the 70-year-old woman presenting with weight loss and a rectal mass is suggestive of a colorectal malignancy, most likely colon cancer. Colorectal cancer is known for its potential to metastasize, and among the organs that it's commonly associated with, the liver is of particular concern.

The liver is the primary organ where colorectal cancer often spreads due to the vascular connection through the portal vein. Tumor cells can infiltrate the liver through the blood supply, leading to complications such as liver metastases which can significantly impact the patient's prognosis and treatment options. In advanced cases, metastasis to the liver can result in liver dysfunction and may complicate the management of the primary tumor.

While the lungs and skin can also be sites of metastasis for various cancers, colorectal cancer is especially notorious for liver involvement. Therefore, the greatest risk for complications from this suspected malignancy in this patient is indeed associated with the liver. By prioritizing liver monitoring and management in cases of suspected colorectal cancer, healthcare providers can better address the potential complications arising from metastatic disease.