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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.

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Voices

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Written by Yan Chun
Oncology
59sec home-news-image

What are the early symptoms of rectal cancer in women?

The early symptoms of female rectal cancer are primarily localized to the rectum. Most patients exhibit symptoms such as bloody stools, recurrent constipation, or alternating occurrences of diarrhea and constipation. Some patients may experience a change in stool characteristics, an increase in the frequency of daily bowel movements, and narrower stools. Additionally, some early-stage patients may exhibit symptoms similar to bacterial dysentery, such as the discharge of mucus and bloody pus in stools, and a feeling of incomplete evacuation after a bowel movement. Some female rectal cancer patients may mistake bloody stools for hemorrhoids and consequently avoid seeking medical attention. Early symptoms are not distinctive, and many patients may overlook them, leading to a delay in the early detection of rectal cancer.

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Written by Yan Chun
Oncology
1min 7sec home-news-image

Why do benign teratomas recur?

Benign teratomas, although not aggressive or metastatic, do not require adjuvant chemotherapy or radiation therapy after curative surgery to fight the tumor. However, many benign teratomas recur after surgery and require further surgical treatment. The cause of benign teratoma recurrence is considered to be due to the persistent presence of oncogenic factors. Therefore, benign tumors can also recur, since the exact cause and pathogenesis of benign teratomas are still unclear clinically. Thus, prevention from an etiological perspective is not possible, and the only option is timely surgical removal upon tumor detection to prevent the benign teratoma from becoming malignant. For patients with benign teratomas, regular follow-up is necessary after curative surgery to monitor any changes in the condition. If signs of recurrence are detected, prompt intervention is necessary to prevent malignancy.

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Written by Yan Chun
Oncology
1min 2sec home-news-image

What are the symptoms of endometrial cancer?

Patients with endometrial cancer mainly experience symptoms in three areas: First, obvious symptoms caused by local tumors in the uterus, such as irregular vaginal bleeding, changes in the menstrual cycle, a sense of fullness and dull pain in the lower abdomen and pelvic area, along with significant discomfort and pain. Second, clinical symptoms caused by metastatic lesions. Endometrial cancer can spread through three pathways, which after dissemination can cause a variety of symptoms, such as abdominal pain, bloating, constipation, headache, vomiting, movement disorders, chest tightness, coughing, wheezing, and difficulty breathing. Some patients may also experience bone pain. Third, systemic symptoms, which are typically seen in advanced stages of endometrial cancer and commonly include cachexia, fever, and others.

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Written by Yan Chun
Oncology
1min 14sec home-news-image

Why can't people with liver cancer drink milk?

Liver cancer patients are generally advised not to drink milk, particularly in cases of advanced liver cancer where there is a potential for hepatic encephalopathy. This is because, for patients in the late stages of liver cancer, liver function is compromised, and some may already exhibit symptoms indicative of pre-hepatic encephalopathy. Consuming a diet rich in protein can easily trigger hepatic encephalopathy, and since milk is high in protein, its consumption is usually limited or avoided in such patients. However, for the majority of liver cancer patients, drinking milk is permissible as it not only contains abundant protein but also rich calcium, which is beneficial for the recovery of liver cancer patients. Most liver cancer patients have hypoalbuminemia (low levels of protein in the blood) and some also have hypocalcemia (low levels of calcium in the blood), thus the intake of calcium and protein-rich foods can be very beneficial for their recovery.

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Written by Yan Chun
Oncology
40sec home-news-image

How long does it take for melanoma to develop?

The duration of melanoma development varies because melanoma is a type of skin cancer with a relatively high degree of malignancy. However, clinically, the types of melanoma are diverse, and the onset time generally correlates with the patient's clinical phenotype. For some superficial types of melanoma with low malignancy, it generally takes several years to develop. For highly malignant melanomas, the disease generally progresses rapidly within about six months to a year. Once melanoma progresses, it can affect multiple parts of the body and severely impact the patient's lifespan.

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Written by Yan Chun
Oncology
1min 7sec home-news-image

Can occasional smoking and drinking be okay with thyroid cancer?

Thyroid cancer is a common malignant tumor in the head and neck area, and currently, the exact mechanism and etiological causes of thyroid cancer are not clearly defined in the clinic. However, some research studies indicate that there are certain factors associated with the incidence of thyroid cancer. For example, ionizing radiation, prolonged exposure can lead to the occurrence of thyroid cancer. Both insufficient and excessive iodine intake can lead to a high incidence of thyroid cancer. Genetic factors also play a significant role in the development of thyroid cancer. Excessive smoking and drinking can promote the occurrence of thyroid cancer. Therefore, heavy smoking and drinking are not recommended, but occasional smoking and drinking do not significantly impact the condition of thyroid cancer and are deemed acceptable. Moreover, for patients with thyroid cancer, treatment is primarily surgical, as radiotherapy and chemotherapy are not very sensitive anti-tumor treatments.

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Written by Yan Chun
Oncology
45sec home-news-image

Melanoma CT manifestations

The CT manifestations of melanoma vary depending on the location of the tumor. Generally, melanomas that occur on the skin can appear on CT scans as mass-like lesions, and the scans can show whether there are any urgent conditions involving the surrounding nerves, blood vessels, and tissues. Some patients may only show CT imaging changes such as localized thickening of the skin. In melanomas that occur inside the skull or in the vulva, the CT mainly shows localized mass-like lesions. These lesions are typically low-density foci with poor blood supply around them, and they generally have an irregular shape.

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Written by Yan Chun
Oncology
57sec home-news-image

What should women with hepatic hemangiomas be cautious about?

Patients with hepatic hemangiomas in women need to pay attention to the following aspects clinically. First, be cautious with physical activity and reduce the intake of too many medications to prevent damage to liver function in patients with hepatic hemangiomas. Second, for smaller hepatic hemangiomas in women, regular imaging examinations such as ultrasound and MRI can be conducted to monitor changes in the hemangiomas. Third, for larger hepatic hemangiomas, it is necessary to regularly monitor liver function changes and provide timely treatment. Fourth, the usual diet should be low in fat and high in fiber to prevent the worsening of hepatic hemangioma disease due to hyperlipidemia.

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Written by Yan Chun
Oncology
1min 28sec home-news-image

Does early-stage lung cancer cause facial swelling?

Patients with early-stage lung cancer generally do not experience facial swelling. This is because early-stage lung cancers mainly include carcinoma in situ and stage I lung cancer. At this stage, the cancer tissue is confined to the mucosa, without invasion of the surrounding tissues or distant metastasis. Therefore, the clinical symptoms of patients with early-stage lung cancer primarily involve the respiratory system. Clinical symptoms mainly include coughing, often a dry cough without phlegm, or coughing up phlegm with blood, hemoptysis, and massive hemoptysis. Some patients may experience chest pain, or have a barking cough, or a metallic-sounding cough. Some patients may have shortness of breath after physical activity, and severe cases can experience breathing difficulties. In most cases, patients do not exhibit other clinical changes. However, as the disease progresses, and there is invasion into surrounding tissues, or distant metastases occur, symptoms of invasion into surrounding tissues or distant metastatic sites may appear. For example, metastasis to the cervical lymph nodes can cause enlarged lymph nodes, or compression of the superior vena cava by the patient, resulting in swelling of the face and neck.

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Written by Yan Chun
Oncology
56sec home-news-image

Is vomiting in prostate cancer due to metastasis to the liver?

Patients with prostate cancer may experience vomiting due to the metastasis of the disease to the liver, causing damage to liver function. However, vomiting could also be caused by other reasons, such as the metastasis of prostate cancer to the peritoneum of the abdominal cavity. Clinically, this can lead to cancerous intestinal obstruction, with symptoms commonly including vomiting, abdominal pain, bloating, reduced bowel movements and gas, or cessation of bowel movements and gas. When prostate cancer metastasizes to the brain, the increased intracranial pressure can also cause symptoms such as vomiting, headache, swelling of the optic disc, hemiplegia, and aphasia. Additionally, some prostate cancer patients may experience vomiting due to toxic side effects from treatments such as chemotherapy and targeted therapy.