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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
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.
How to rule out liver cancer when experiencing right shoulder pain?
Some liver cancer patients may experience abdominal pain that radiates to the shoulder and back, resulting in right shoulder pain. Therefore, when a patient presents with right shoulder pain, to rule out the possibility of liver cancer, some laboratory tests or radiological examinations can be conducted, and if necessary, histopathological examinations can also be performed. If hematological examination does not show an abnormal increase in AFP levels, and radiological examinations do not reveal any abnormal liver conditions such as large masses, nodular tumors, or diffuse liver lesions, and there is no history of hepatitis or cirrhosis, it is generally possible to rule out right shoulder pain caused by liver cancer. To determine the exact cause of the pain, examinations such as X-rays of the right shoulder, CT scans, and if necessary, MRI or bone scans can be conducted to exclude right shoulder pain caused by liver cancer lesions.
Can patients with advanced pancreatic cancer eat watermelon?
Patients with advanced pancreatic cancer can eat watermelon. This is because many patients with advanced pancreatic cancer experience liver metastasis. Cancerous tissues damage liver cells, leading to impaired liver function and abnormal glycogen metabolism. Many patients may experience episodes of hypoglycemia, and eating watermelon can help replenish blood sugar, which is beneficial for the patients. Additionally, many patients with advanced pancreatic cancer suffer from a decline in appetite, and watermelon can stimulate their appetite and increase their food intake, which is also beneficial for their recovery. Thirdly, watermelon has a certain diuretic effect. Since many patients with advanced pancreatic cancer also suffer from hypoproteinemia, they are prone to edema. Eating watermelon can promote an increase in urine output, thereby helping to alleviate edema.
Early symptoms and manifestations of thyroid cancer
Thyroid cancer is a common malignant tumor in the head and neck area. Early symptoms and signs primarily include a thyroid mass discovered incidentally during a physical examination. This type of mass grows quickly, leading to localized thyroid enlargement, and patients may experience discomfort when swallowing. Additionally, some thyroid cancer patients, due to abnormal hormone secretion, might experience unexplained skin flushing or sweating symptoms. Besides, early symptoms and manifestations of thyroid cancer are not typical, and many patients do not exhibit obvious symptoms. Instead, abnormalities in thyroid function are often incidentally found during physical examinations.
What discomforts can thyroid cancer cause in the body?
Thyroid cancer is a common type of malignant tumor in the head and neck region. In its early stages, thyroid cancer has little effect on the body, and generally does not cause any discomfort. However, as the disease progresses and the tumor invades outward and metastasizes to distant areas, it can lead to various uncomfortable sensations. For example, if thyroid cancer invades surrounding tissues and organs, such as the recurrent laryngeal nerve, the patient may experience symptoms like a hoarse voice and choking while drinking. If thyroid cancer metastasizes to the cervical lymph nodes, the patient may also develop Horner's syndrome, which is characterized by a constricted pupil, drooping eyelid, and absence of sweating on the affected side of the face. If the patient develops superior vena cava syndrome, it can lead to difficulty breathing, chest pain, and swelling of the face and neck. If thyroid cancer metastasizes to the lungs or other distant areas, the patient may also experience chest pain, difficulty breathing, and coughing.
What are the symptoms of tongue cancer?
Tongue cancer is a type of oral cancer, with clinical symptoms primarily manifested in the following aspects. Many patients develop lumps on the tongue, which generally have unclear boundaries and easily adhere to surrounding tissues, showing limited mobility. The lumps exhibit persistent rapid growth, and when they invade nearby tissues, patients can experience ear pain and difficulties in tongue movement. In advanced stages, patients with tongue cancer may have a fixed tongue, drooling, difficulty eating, and unclear speech. Additionally, lumps in tongue cancer can undergo necrosis, ulceration, and secondary infections, bleeding, and some may have an abnormal taste. The disease can lead to lymph node metastasis, causing lymph node enlargement, often manifesting as neck lumps. Some patients may also experience metastasis to bone tissues, resulting in bone pain.
Vulvar cancer lymph node metastasis is stage III.
Vulvar cancer is a type of malignant tumor in the female reproductive system, commonly occurring in postmenopausal elderly women. The disease progresses to involve lymph node metastasis, and its clinical staging is either stage III or stage IV. If the disease spreads to the inguinal lymph nodes with no other site affected, then the clinical stage is considered stage III. If the vulvar cancer metastasizes to the pelvic lymph nodes, or distant locations such as the liver, lungs, or bones, then it is classified as stage IV. For cases of stage III and IV vulvar cancer, the main treatment methods are palliative surgery, radiation therapy, and chemotherapy. The treatment strategy primarily involves a combination of surgery and radiation therapy along with chemotherapy. For patients with stage III and IV vulvar cancer, the prognosis is generally poor.