When esophageal cancer patients develop anemia, their overall systemic functions decline significantly. This not only affects treatment efficacy but also reduces the patient's quality of life. Particularly before undergoing radiotherapy or chemotherapy, it is essential to check for anemia. Esophageal cancer patients should pay special attention to the severity of anemia. Correcting anemia before treatment can enhance therapeutic outcomes.
Anemia caused by esophageal cancer shares many similarities with anemia from other chronic diseases, manifesting as fatigue, weakness, dizziness, headaches, and difficulty swallowing. The primary cause is toxins secreted by cancer cells that stimulate the patient's hematopoietic system, reducing the activity of erythropoietin in the body.Simultaneously, impaired immune function reduces iron utilization—a key component in red blood cell production. Iron deficiency diminishes red blood cell count, leading to anemia.
Esophageal cancer patients exhibit poor response to anemia treatment, with outcomes significantly worse than those with isolated anemia. This stems from red blood cells' vital role in transporting oxygen and nutrients. Cancer cells become sensitive to chemotherapy and radiation only in oxygen-rich environments.In anemic esophageal cancer patients, tumor tissues experience hypoxia, prompting the tumor to proliferate numerous blood vessels. As the number of tumor neovessels increases, cancer cells accelerate their growth and reproduction, while also increasing the likelihood of metastasis. Therefore, anemia promotes tumor progression and reduces the therapeutic effects of chemotherapy and radiotherapy.
Beyond anemia, what other symptoms accompany esophageal cancer?
Esophageal Cancer Symptoms
1. Patients often experience a sensation of fullness or mild pain behind the sternum. This intermittent symptom typically worsens after exertion or eating. Be mindful of this.
2. A persistent sensation of a foreign object during swallowing, causing significant discomfort, may indicate esophageal cancer.
3. Swallowing obstruction or a sensation of food getting stuck at a specific point during swallowing. This is not continuous and becomes more pronounced as the disease progresses.
4. Chest tightness or constriction, often accompanied by throat dryness. Patients report persistent chest pressure, as if obstructed by an object, causing a constricting sensation in the chest. This is particularly noticeable during swallowing but does not typically interfere with daily life or work.
5. Fullness and mild pain in the epigastric region, below the xiphoid process, or upper abdomen, more pronounced after eating dry foods. This occurs intermittently rather than consistently. Such symptoms often indicate early-stage cardia cancer. The aforementioned early symptoms generally persist for over three months. When they become frequent, persistent, and worsening, the condition is no longer in its early stages.