In the field of pathology, understanding the causes of marked bleeding is crucial for diagnosing various conditions. Here is a concise explanation of the options provided:
- VMA disease: There is no well-known condition called VMA disease linked to bleeding disorders. VMA generally refers to vanillylmandelic acid, a metabolite relevant in diagnosing catecholamine-secreting tumors.
- Haemophilia A: This is a genetic disorder caused by missing or insufficient factor VIII, leading to prolonged bleeding episodes. While significant bleeding can occur, it is not typically called "marked" bleeding except in severe cases.
- Haemophilia B: Similar to Haemophilia A, this disorder results from deficiency in factor IX and causes extended bleeding, but again, not typically termed as "marked" for all cases.
- ALL (Acute Lymphoblastic Leukemia): This is a type of cancer involving the blood and bone marrow, characterized by the overproduction of immature lymphoblasts. One of the hallmark symptoms of ALL is marked bleeding due to thrombocytopenia — a low platelet count, causing increased bleeding tendencies.
Thus, marked bleeding is most prominently seen in ALL (Acute Lymphoblastic Leukemia) due to its profound impact on platelet counts and hemostatic functions.