Last updated: Sept 20 2026
Rectal cancer is highly treatable when it is caught early, and screening is one of the most effective tools for finding it. At Wellness Oncology & Hematology, our board-certified oncologists in Tarzana and West Hills, California, provide personalized rectal cancer care and coordinate with other specialists involved in your diagnosis and treatment. If you have been diagnosed with rectal cancer or need an oncology consultation, schedule an appointment today by phone or through our online booking feature.
What is rectal cancer?
The rectum is the final several inches of the large intestine, connecting the colon to the anus. Rectal cancer develops when cells in the rectum mutate and multiply, forming a tumor that can grow and, over time, spread to other parts of the body.
Rectal cancer is closely related to colon cancer, and together the two are known as colorectal cancer. They share many risk factors, but because of where rectal cancer forms, its treatment often differs from colon cancer treatment.
What causes rectal cancer, and who is at risk?
Many rectal cancers develop from precancerous polyps, although not every polyp becomes cancerous. Inherited conditions such as Lynch syndrome and familial adenomatous polyposis raise the risk, though many cases occur in people with no family history of the disease.
Common risk factors include:
- Age 45 and older
- A personal or family history of colorectal cancer or polyps
- Inflammatory bowel disease, such as Crohn’s disease or ulcerative colitis
- Type 2 diabetes
- Obesity and a sedentary lifestyle
- A diet high in red or processed meat
- Smoking and regular alcohol use
Screening recommendations can vary based on your personal and family history and other risk factors. Talk with your provider about when screening should begin and which screening schedule is appropriate for you.
What are the symptoms of rectal cancer?
Early rectal cancer may cause no symptoms, which is one more reason screening matters. As the disease progresses, warning signs can include:
- A change in bowel habits, such as diarrhea or constipation
- Dark or bright red blood in the stool
- Mucus in the stool
- Narrow, ribbon-like stools
- Abdominal pain or cramping
- Painful bowel movements
- A feeling that the rectum does not empty completely
- Unexplained weight loss, weakness, or fatigue
- Anemia
These symptoms can have many causes, but they should always be evaluated by a provider.
How is rectal cancer diagnosed?
A colonoscopy is an important tool for evaluating the colon and rectum and can also detect precancerous polyps. If an abnormal area is found, tissue samples may be removed for biopsy. When rectal cancer is diagnosed, additional imaging and testing help determine the stage and guide treatment planning. Your oncology team may coordinate with gastroenterologists, colorectal surgeons, radiologists, and other specialists involved in your care.
Rectal cancer treatment options at Wellness Oncology & Hematology
Treatment depends on where the cancer is located, its stage, your overall health, and other characteristics of the disease. Surgery may be an important part of treatment for localized rectal cancer, while some patients may receive chemotherapy and radiation therapy as part of a coordinated treatment plan.
Because rectal cancer treatment can involve several specialties, your care plan may include collaboration among medical oncology, radiation oncology, colorectal surgery, and other specialists. Our oncology team helps develop an individualized treatment approach, coordinates the medical oncology portion of your care, and explains your options so you understand what comes next.
Why choose Wellness Oncology & Hematology for rectal cancer care
Our board-certified oncologists and hematologists provide concierge-style, patient-centered care across two San Fernando Valley locations. From understanding your diagnosis and treatment options to navigating ongoing cancer care and follow-up, you work with a team that takes the time to understand your needs, answer your questions, and coordinate your care.
Schedule a rectal cancer consultation in Tarzana or West Hills
If you have been diagnosed with rectal cancer, have an abnormal test result, or have been referred for an oncology consultation, our team is here to help you understand your next steps. Call our West Hills office at (818) 346-1773 or our Tarzana office at (818) 705-3900, or book your appointment online.
Rectal cancer FAQs
Is rectal cancer curable?
Many rectal cancers can be treated successfully, particularly when diagnosed at an earlier stage. Treatment depends on the location and stage of the cancer and may involve surgery, chemotherapy, radiation therapy, or a combination of approaches. Your oncology team can explain the treatment plan and expected outlook based on your individual diagnosis.
What is the difference between colon cancer and rectal cancer?
Both begin in the large intestine and are grouped together as colorectal cancer. Colon cancer forms in the longer, upper portion of the large intestine, while rectal cancer forms in the last several inches before the anus. Because of this difference in location, treatment approaches can vary.
At what age should I start colorectal cancer screening?
Most people at average risk should begin colorectal cancer screening at age 45. If you have a family history, inflammatory bowel disease, or other risk factors, your provider may recommend starting earlier. Ask your doctor for a personalized screening plan.
How often do I need a colonoscopy?
For people at average risk with a normal result, a colonoscopy is generally repeated every 10 years, but the interval is shorter if polyps are found or if you have added risk factors. Your provider will recommend the right schedule for you.
Does blood in the stool always mean cancer?
No. Blood in the stool is often caused by benign conditions such as hemorrhoids. Still, because it can also be a sign of rectal or colon cancer, any rectal bleeding should be evaluated by a provider.