What Are the Symptoms of Advanced Rectal Cancer?
Apr 15, 2022
Source: Cainiu Health
Dr. Zhao Haiming
Introduction
If liver metastasis occurs, patients may experience upper abdominal pain or discomfort and loss of appetite. Lung metastases can cause cough, sputum production, and hemoptysis. Brain metastases may lead to nausea and vomiting, as well as other signs of increased intracranial pressure. In advanced rectal cancer, bone metastases may also develop, manifesting as localized bone pain and pathological fractures. In the late stages, treatment options are limited; therapy is primarily palliative—aimed at alleviating suffering and prolonging survival.
In advanced rectal cancer, as the tumor enlarges, patients may experience frequent rectal bleeding, a sense of urgency, heaviness, or downward pressure in the anal region, and increased bowel movement frequency. Pelvic metastases may cause abdominal distension, abdominal pain, intestinal obstruction, increased bowel movements, and rectal bleeding.
Symptoms of Advanced Rectal Cancer
Hepatic metastasis may manifest as upper abdominal discomfort or pain and loss of appetite. Pulmonary metastasis may cause cough, sputum production, and hemoptysis. Brain metastases may lead to nausea, vomiting, and other signs of increased intracranial pressure. Bone metastases may also occur in advanced rectal cancer, resulting in localized bone pain and pathological fractures. In later stages, treatment options are limited, focusing primarily on palliative care to alleviate suffering and prolong survival.
When the tumor grows large enough, intestinal obstruction may develop, presenting with abdominal pain, distension, and difficulty defecating. If the tumor compresses the bladder, urinary voiding becomes difficult. Invasion into the bladder may cause bladder irritation symptoms, including urinary frequency, urgency, and dysuria. Invasion of the presacral nerves may produce presacral nerve symptoms such as sacrococcygeal discomfort, low back pain, and gait instability.
Hepatic metastasis from rectal cancer leads to characteristic hepatic manifestations, primarily jaundice, ascites, fever, weight loss, and fatigue. As a catabolic disease, rectal cancer often causes marked weight loss and cachexia.
Patients with advanced rectal cancer commonly present with rectal bleeding, altered stool shape, and severe obstructive defecation symptoms. Distant metastases produce site-specific symptoms. Hepatic metastasis is the most common, frequently causing upper abdominal pain, jaundice, and bleeding, among other manifestations. Patients diagnosed with rectal cancer are advised to seek timely medical evaluation and treatment.
