Internal Medicine - Page 11

Internal MedicineHematology

Hemophilia

Hemophilia is a group of inherited bleeding disorders characterized by severe coagulation dysfunction, caused by congenital deficiency of clotting factors. Due to insufficient clotting factors in the patient's body, blood cannot clot normally at the site of vascular injury, leading to persistent bleeding and a series of symptoms. Based on the type of deficient clotting factor, it can be divided into hemophilia A (factor VIII deficiency) and hemophilia B (factor IX deficiency).

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Internal MedicineHematology

Coagulopathy

A public condition summary is being prepared.

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Internal MedicineHematology

Myeloproliferative neoplasms

Myeloproliferative neoplasms (MPNs) are a group of hematologic disorders characterized by the clonal proliferation of one or more myeloid cell lines that are relatively mature. These are malignant neoplastic diseases of the hematopoietic system, leading to systemic dysfunction and multi-organ failure. MPNs are generally classified into four types based on the predominant proliferating cell line: Polycythemia vera (PV): Characterized by predominant proliferation of the erythroid lineage. It commonly affects individuals around 60 years of age, with a slight male predominance. Chronic myeloid leukemia (CML): Characterized by predominant proliferation of the granulocytic lineage. It primarily affects middle-aged and elderly individuals and is rare in children. Essential thrombocythemia (ET): Characterized by predominant proliferation of the megakaryocytic lineage. It mainly occurs in middle-aged individuals. Primary myelofibrosis (PMF): Characterized by predominant proliferation of fibroblastic cells. It mostly affects middle-aged and elderly individuals. As the disease progresses, some MPNs can transform into other diseases or interconvert between various subtypes. Common symptoms include fever, fatigue, weakness, hepatosplenomegaly, bleeding, anemia, and bone pain.

Internal MedicineHematology

Hematologic diseases

A public condition summary is being prepared.

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Internal MedicineHematology

Acute lymphoblastic leukemia

Acute lymphoblastic leukemia is a malignant neoplastic disease characterized by the abnormal proliferation of B-cell or T-cell lymphocytes in the bone marrow. It is common in children and often presents with anemia, infection, and lymphadenopathy.

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Internal MedicineHematology

Leukopenia

Leukocytes, commonly known as white blood cells, are a component of blood. There are five main types of leukocytes: neutrophils, eosinophils, basophils, monocytes, and lymphocytes, with neutrophils being the most abundant. Leukocytes primarily function to resist the invasion of pathogens in the human body. The normal total leukocyte count is (4.0 ~ 10.0) × 10^9/L. When the peripheral blood leukocyte count consistently falls below 4.0 × 10^9/L, it is termed leukopenia. Since neutrophils constitute the majority of leukocytes, leukopenia is, in most cases, caused by neutropenia.

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Internal MedicineHematology

Myelodysplastic Syndromes

Myelodysplastic syndromes (MDS) are a group of neoplastic diseases originating from hematopoietic stem cells. They are primarily characterized by abnormal bone marrow hematopoiesis and abnormal blood cell development, leading to refractory cytopenia, hematopoietic failure, and a high risk of transformation to acute leukemia.

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Internal MedicineHematology

Chronic myeloid leukemia

Chronic myeloid leukemia (CML), also known as chronic myelogenous leukemia, is a malignant myeloproliferative neoplasm originating from multipotent hematopoietic stem cells. This disease predominantly affects middle-aged and elderly individuals, with rare occurrences in children. Common symptoms include fatigue, low-grade fever, weight loss, and splenomegaly.

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Internal MedicineHematology

Multiple myeloma

Multiple myeloma is a malignant tumor that originates in plasma cells. Normally, plasma cells produce antibodies that protect the body from various pathogens, injuries, and other adverse factors. Plasma cells are produced in the bone marrow. In multiple myeloma, the bone marrow produces an excessive amount of plasma cells, while failing to produce the normal blood cells the body needs. This leads to a series of symptoms such as anemia and bone pain.

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