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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
Can people with hemangioma drink alcohol?
Hemangiomas are benign tumors of the blood vessels. It is advisable for patients with hemangiomas to abstain from alcohol, as drinking is a harmful stimulus. Prolonged alcohol consumption can lead to hardening of the vessels, which may easily cause rupture and bleeding of the hemangiomas, leading to adverse consequences. Therefore, once hemangiomas are detected, it is recommended to reduce or avoid alcohol consumption. Although hemangiomas are generally benign tumors and often do not cause significant damage to the body, some hemangiomas, due to their specific growth location and size, can sometimes lead to rupture and bleeding or affect bodily functions, thereby significantly impacting the quality of life. Such cases may require active surgical treatment, administration of sclerosing agents, or certain medications and physical therapies.
Does early-stage liver cancer cause the complexion to become dark?
Patients with early-stage liver cancer do not experience darkening of the facial complexion. This is because early-stage liver cancer primarily refers to carcinoma in situ of the liver and some small liver cancers. Since the tumors are small and the affected area is limited, they generally cause few symptoms clinically. Some patients may experience mild fatigue and a decrease in appetite, but these do not lead to changes in the complexion. Only when the liver cancer progresses to the middle or late stages, causing damage to liver cell functions or when the pathology metastasizes, leading to damage to multiple organ functions, can there be some changes in facial complexion. For example, patients may exhibit pale complexions due to moderate to severe anemia. Some patients may have yellowing of the skin due to obstructive jaundice or hepatocellular jaundice. Additionally, some patients may show darkening of the facial complexion due to abnormal hormone secretion.
What are the early symptoms of oral cancer?
Clinically, oral cancer encompasses a wide range of conditions. Early symptoms in patients include the following aspects: many patients experience recurring, hard-to-heal ulcers on the tongue, some manifest ulcerative lesions on the lips, or small nodular lesions which generally do not show obvious symptoms initially. Some patients show symptoms of infection or pain, while others may experience recurring bleeding of the gums, loosening of the teeth, or discomfort in the throat during swallowing. The early symptoms in patients are not typical, leading many to not seek medical consultation early on. It is usually not until they experience severe difficulty in opening the mouth or swallowing, or when the patients have difficulty speaking, that they will seek medical attention.
Does liver cancer cause nosebleeds in its early stages?
Patients with early-stage liver cancer generally do not exhibit clinical symptoms of nosebleeds. Nosebleeds are a clinical manifestation of late-stage liver cancer. Early-stage liver cancer patients usually have atypical symptoms, which may include tenderness in the liver area, decreased appetite, abdominal bloating, and symptoms of indigestion. As the disease progresses, the liver cancer invades surrounding tissues and metastasizes to distant sites, leading to liver function impairment and coagulation disorders, which can result in nosebleeds. Some patients may also develop splenic hyperfunction due to liver damage, leading to a decrease in platelets, which can also cause nosebleeds. Additionally, some patients in the late stages may develop disseminated intravascular coagulation, leading to spontaneous internal and mucosal bleeding, clinically manifesting as nosebleeds.
How to distinguish between anal fissure and rectal cancer causing rectal bleeding
In clinical practice, to differentiate between rectal bleeding caused by anal fissures and that caused by rectal cancer, we can consider the following aspects. Firstly, rectal bleeding caused by anal fissures is generally accompanied by pain in the anal area, and the bleeding is especially severe after defecation, with blood attached to the surface of the stool. In contrast, rectal bleeding caused by rectal cancer rarely accompanies pain in the anal area, and the blood is generally mixed with the stool. Secondly, rectal bleeding from anal fissures is usually due to hard stools, and improving the condition of hard stools, along with providing local anti-inflammatory treatment, usually relieves the symptoms of bleeding. However, in the case of rectal cancer, besides hard stools, patients may also experience an increase in the frequency of defecation and signs of diarrhea, and typical anti-inflammatory treatments are not notably effective.
What are the symptoms on the face in the early stages of liver cancer?
In early-stage liver cancer patients, symptoms generally do not appear on their faces. This is because the tumors in early liver cancer are small, the lesions are localized, with shallow infiltration, no invasion of surrounding tissues or metastasis to distant organs, and thus, less damage to liver cells. Therefore, most cases do not show obvious symptoms clinically. Only when the lesions progress further do symptoms of disease dissemination appear in patients. These symptoms include persistent pain in the liver area, a significant decrease in appetite, fatigue, fever, and weight loss. Some patients may also experience symptoms of metastatic lesions, such as pain in bone metastases, headache, vomiting, hemiplegia, and aphasia in brain metastases, and cough, breathing difficulties, and chest pain in lung metastases.
Five Early Symptoms of Pancreatic Cancer
The five major symptoms of early pancreatic cancer patients include abdominal pain, jaundice, abdominal distension, diarrhea, fatigue, and more, among which the occurrence of abdominal pain is higher. Many patients with early pancreatic cancer experience persistent and hidden abdominal pain without other clinical symptoms, which often leads to missed opportunities for early diagnosis; Secondly, jaundice is also a main manifestation of early pancreatic cancer, particularly in the head of the pancreas, mainly due to the tumor causing obstructive jaundice; Thirdly, abdominal distension, which is generally a mild distension and often does not significantly attract clinical attention; Fourthly, patients often feel a general fatigue, which is difficult to alleviate with ordinary treatment methods; Lastly, diarrhea, which is often due to abnormal secretion of digestive fluids caused by the pathology, leading to diarrhea.
Early symptoms and signs of pancreatic cancer
Pancreatic cancer is a malignant tumor of the digestive system and does not have a high clinical incidence rate. Early symptoms of pancreatic cancer are not typical; some patients experience abdominal pain, primarily a persistent episodic pain that may radiate to the shoulder and back. Additionally, early-stage pancreatic head cancer patients may exhibit jaundice, often caused by obstructive jaundice due to tumor compression. Besides this, patients may also have clay-colored stools or urine the color of strong tea. Beyond these symptoms, early-stage patients exhibit no other signs. When typical clinical manifestations occur, they are generally indicative of mid to late-stage pancreatic cancer. Precursors to pancreatic cancer include persistent hidden pain in the shoulder or a stiff pain in the back. This continuous pain, often caused by the invasion of the abdominal nervous plexus, results in radiating pain.
How is pancreatic cancer caused?
Currently, there is no consensus in clinical practice regarding the causes of pancreatic cancer, but some studies have found that certain factors contribute to its high incidence. For example, patients with diabetes have a higher incidence of pancreatic cancer compared to those without diabetes, and having chronic pancreatitis and other diseases also leads to a higher occurrence of pancreatic cancer. Additionally, factors such as genetic mutations are also associated with the development of pancreatic cancer. Some research has found that there is a certain correlation between genetic factors and the occurrence of pancreatic cancer. Once pancreatic cancer develops, it leads to a variety of symptoms in clinical settings.
Can a cystic lesion in the liver be liver cancer?
Clinically, cystic lesions in the liver are mostly not liver cancer lesions, because liver cancer is a malignant tumor occurring in the liver. Clinically, on imaging, it is mainly manifested as occupying lesions in the liver, appearing as multiple hepatic nodules fused into a mass, or as a huge single nodular lesion. These lesions generally appear as solid lesions. When the tumor is large, ischemic necrosis can occur due to insufficient blood supply to the central area, resulting in cystic changes in the central region of the solid lesion. Therefore, some patients with large liver cancer may have cystic and solid lesions on imaging, but in most cases, liver cancer lesions are solid.