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Yan Chun
Oncology
About me
Graduated from the Clinical Medicine Department of Qingdao Medical College, has been working in the Oncology Department since 2001, obtained the qualification of attending physician in the same year. Promoted to attending physician in 2003. Qualified as associate chief physician in 2011. Participated in advanced studies at Jinan Cancer Hospital from June to November 2015. Serves as a youth member of the Chemical Therapy Committee in Shandong Province, youth member of the Elderly Therapy Committee of the Qingdao Anti-cancer Association, and a member of the Biologic Therapy Committee of the Qingdao Anti-cancer Association.
Proficient in diseases
Chemotherapy, radiotherapy, deep hyperthermia, targeted therapy, and endocrine therapy for various tumors such as stomach cancer, colorectal cancer, lung cancer, breast cancer, ovarian cancer, and pancreatic cancer.
Voices
Early symptoms of rectal cancer
The early symptoms of rectal cancer generally include the following aspects: many patients experience changes in their bowel habits, such as prolonged diarrhea, prolonged constipation, or alternating occurrences of diarrhea and constipation. Some patients also experience changes in the characteristics of their stools, with stools becoming thinner and more watery due to increased bowel movements. Additionally, some patients may excrete stools mixed with mucus, pus, and blood, or stools that contain blood, and may experience a feeling of urgency followed by a sensation of incomplete evacuation. Some patients also feel itching or a dull pain in the anal area. Moreover, the early symptoms of rectal cancer are not very prominent, and many patients can easily confuse them with benign rectal diseases such as hemorrhoids and anal fissures. This confusion leads many patients not to seek medical attention, and by the time symptoms like significant pain and lumps appear, the disease is typically in its intermediate or advanced stages.
What are the early symptoms of colon cancer?
The early symptoms of colon cancer mainly include discomfort and pain in the lower abdomen, which does not necessarily become more pronounced after eating and generally occurs intermittently. Some patients may also experience changes in stool shape, primarily manifested as narrower stools, or an increased frequency of bowel movements per day, leading to diarrhea. Some patients in the early stages may experience worsening of pre-existing constipation, or alternating symptoms of diarrhea and constipation. Some colon cancer patients in the early stages may experience bloody stools, or the presence of mucus, pus, and blood in the stool, which are some atypical gastrointestinal symptoms of colitis. Some patients may also experience nausea.
Is a fever in nasopharyngeal carcinoma a sign of deterioration?
Patients with nasopharyngeal carcinoma may exhibit fever in a clinical setting. This fever can partially be due to the worsening of the carcinoma itself. However, not all cases are due to progression of the disease; some are caused by infections and other factors. For example, after receiving anti-tumor treatments such as radiotherapy and chemotherapy, patients with nasopharyngeal carcinoma may experience a decrease in white blood cells, making them highly susceptible to infections, which can then manifest as fever. Additionally, patients with nasopharyngeal carcinoma may have weakened immune systems, making them prone to infections and fevers. As the nasopharyngeal carcinoma progresses, it can release abnormal hormones, forming endogenous fever-inducing agents, leading to clinical manifestations of fever. Generally, this type of fever is referred to as tumor fever, which is often related to the progression of the disease. Tumor fever typically requires anti-tumor treatment for effective relief.
Symptoms of male breast cancer
The clinical symptoms of male breast cancer are generally similar to those of females, mainly presenting as painless, progressive enlargement of breast lumps. These breast lumps usually occur under the areola, and some patients may experience nipple inversion or abnormal nipple discharge. Many breast lumps tend to have unclear boundaries with surrounding tissues and often adhere to the skin or chest muscles. Many patients with male breast cancer experience metastasis to the axillary lymph nodes, causing the metastatic lymph nodes to enlarge and become painful, local lymphatic drainage obstruction, and causing local upper limb swelling and pain. Moreover, some male breast cancer cases have metastasized to the lungs, presenting clinically with symptoms such as coughing and chest pain related to the respiratory system. Some patients with male breast cancer have liver metastasis, clinically presenting with pain in the liver area, decreased appetite, and abnormal coagulation functions.
Will people with early-stage liver cancer experience weight loss?
Patients with early-stage liver cancer generally do not experience weight loss; weight loss is more commonly a clinical manifestation in patients with late-stage liver cancer. The reason for weight loss in liver cancer patients is due to the damage caused by cancerous tissue to liver function, leading to reduced synthesis of albumin. Furthermore, patients with liver cancer often experience a significant decrease in food intake, resulting in insufficient intake of nutrients such as albumin. Additionally, the progression of liver cancer tumors requires the consumption of a large amount of the body's albumin. Therefore, due to these factors, many patients with late-stage liver cancer exhibit clinical manifestations of weight loss. Moreover, besides not experiencing weight loss, patients with early-stage liver cancer also do not typically present with typical clinical symptoms. Many patients are asymptomatic, and as the lesion progresses, the cancer spreads, possibly leading to clinical manifestations associated with tumor spread. For example, pain in the liver area, a significant decrease in food intake, fatigue, fever, pain, and some patients may also exhibit symptoms of metastasis such as headaches, vomiting, abdominal pain, and abdominal distension.
Symptoms and Early Signs of Throat Cancer
Symptoms and signs of laryngeal cancer in patients mainly vary according to the different locations of the tumor in the larynx. Most patients with early-stage laryngeal cancer experience a foreign body sensation in the throat, which can be persistent. Patients may even feel a choking sensation when swallowing. Additionally, some patients with early-stage laryngeal cancer may experience unexplained hoarseness or coughing and choking when drinking water, and these symptoms generally do not respond well to oral medication. Some patients exhibit frequent coughing, and ordinary symptomatic cough treatments are ineffective. These are mostly early symptoms and signs. As the laryngeal cancer progresses, patients will experience a noticeable obstruction in the throat, along with symptoms like difficulty breathing.
What are the late-stage symptoms of rectal cancer?
The late-stage symptoms of rectal cancer patients in clinical practice mainly include the following types. The first type is abdominal symptoms caused locally by rectal cancer. For example: bloody stools, pass stools with mucous and pus, anal pain, bloating, abdominal pain, and other manifestations. The second category of symptoms is those from metastases in various locations. For example, bone metastases cause bone pain and limb movement disorders. Lung metastases cause chest tightness, shortness of breath after activity, chest pain, breathing difficulties, coughing and coughing up blood, etc. Brain metastases cause headaches, dizziness, and seizures. The third category of symptoms is mainly systemic symptoms caused by rectal cancer lesions, such as: weight loss, fatigue, and high fever.
What should I do if there is a hemangioma on my tongue?
Hemangioma is a benign tumor that occurs in blood vessels, and the specific etiology and pathogenesis are not clear clinically. The tongue is a common site for hemangiomas. For hemangiomas on the tongue, it is necessary to comprehensively assess based on the type of hemangioma, location, depth of tissue invasion, the proximity to surrounding tissues, and the patient’s own physical condition, among other factors, to determine the most beneficial treatment method. Currently, the clinical treatments for hemangiomas include surgical treatment, radiation therapy, local sclerotherapy, laser treatment, or pharmacotherapy. Currently, there is no single clinical method that can completely treat all types of hemangiomas. For hemangiomas on the tongue that do not affect the overall function of the tongue, conservative treatment can be considered. For hemangiomas that have caused tongue ulcers, medication can be given to protect the mucous membrane of the tongue and promote faster healing of the ulcers.
What causes nasopharyngeal carcinoma?
The specific cause of nasopharyngeal carcinoma, a type of malignant tumor, is currently unclear, but it is considered to be related to some high-risk factors that may lead to the occurrence of nasopharyngeal cancer. Firstly, there are cases of EB virus infections in the nasopharyngeal area. The long-term stimulation of the nasopharyngeal mucosa by this virus leads to hyperplasia of the mucosa, which can become malignant and eventually form nasopharyngeal cancer. Additionally, some clinical studies suggest that the occurrence of nasopharyngeal carcinoma is related to genetic factors, indicating a genetic predisposition to nasopharyngeal carcinoma, which leads to its development. Furthermore, some considerations involve external carcinogenic factors affecting the nasopharyngeal area, such as long-term smoking or environmental air pollution, which can also lead to a high incidence of nasopharyngeal cancer.
What are the early symptoms of thyroid cancer?
Thyroid cancer is a common malignant tumor in the head and neck area. The early symptoms of thyroid cancer are highly atypical, and many patients do not present clear early symptoms. Often, patients discover painless nodules in the thyroid incidentally during physical examinations; these nodules can move up and down with swallowing motions. In a minority of cases, when the nodules of early-stage thyroid cancer are large, they can cause hoarseness or coughing and choking when drinking water. Some patients might experience intermittent, hidden pain in the thyroid area during the early stages, which often resolves on its own without treatment. Besides these, in its early stages, thyroid cancer may not present other obvious symptoms. As the condition progresses, significant clinical symptoms appear only when the tumor invades surrounding structures or metastasizes to distant sites.