The appearance of purple and red spots on the body after malignant melanoma surgery may be caused by abnormal function of blood vessel wall, platelet abnormality, coagulation dysfunction and so on.
1. Functional abnormality of blood vessel wall: if malignant melanoma patients use chemotherapy drugs after operation, it may damage capillary wall and destroy the function of capillary wall, so that blood vessels cannot contract normally to stop bleeding, and then purple and red spots will appear.
2. Platelet abnormality: malignant melanoma patients may have bone marrow metastasis, resulting in hematopoietic dysfunction, causing thrombocytopenia, patients are more prone to bleeding, so it will cause purple and red spots on skin.
3. Coagulation dysfunction: postoperative malignant melanoma may bleed the lack of coagulation factor and vitamin K, causing coagulation dysfunction, resulting in purple and red spots.
There may be other reasons for the appearance of purple and red spots on the body after malignant melanoma surgery, and you should seek medical treatment in time and under the guidance of professional doctors.