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Cancer-associated thrombosis is venous thromboembolism occurring in people with cancer, driven by the cancer and its treatment.
Quick Answer
Cancer-associated thrombosis is venous thromboembolism occurring in people with cancer, driven by the cancer and its treatment. Dr. Sachita Baniya (NMC 20158, 8+ years of clinical experience in haematology and haemato-oncology) evaluates cancer-associated thrombosis at Kathmandu Neurology Clinic & Cognitive Center, 117 Lal Durbar Marg, Kathmandu, Bagmati Province 44600, Nepal — evidence-based, medically reviewed.
Cancer increases the risk of deep vein thrombosis and pulmonary embolism. Risk varies with cancer type, stage, surgery, hospitalisation and systemic therapy. Anticoagulation is used for treatment and sometimes prevention.
Diagnosis uses Doppler ultrasound for suspected DVT and CT pulmonary angiography for suspected PE. Risk assessment and bleeding risk are part of treatment planning.
Anticoagulation is the main treatment, with low-molecular-weight heparin, direct oral anticoagulants or warfarin selected by cancer type, renal function, platelet count and drug interactions. Duration depends on active disease and provoking factors.
Management is individualized and discussed with benefits, limitations, and follow-up.
Prophylaxis is considered for hospitalised and selected ambulatory patients, and with immunomodulatory regimens in myeloma. Early mobilisation and catheter care reduce risk.
Red flags — seek urgent care
Cancer activates clotting pathways, and surgery, hospitalisation, catheters and some treatments add further risk.
Usually at least three to six months, and longer in active cancer. The plan is reviewed as cancer treatment changes.
They are used in selected patients but may interact with cancer drugs and are affected by kidney function and platelet count.
Anticoagulation must be individualised. Dose reduction, temporary interruption or a different agent may be needed.
Selected high-risk outpatients and those on immunomodulatory drugs may receive prophylaxis. Risk scores guide the decision.
Sudden breathlessness, chest pain, fast heart rate, coughing blood or fainting. This is an emergency.
Yes, especially with active cancer. Anticoagulation duration and surveillance are individualised.
Regular review of anticoagulation, bleeding risk, kidney function, platelet count and cancer treatment changes.
Specialist assessment for abnormal blood counts, anaemia, low platelets, bleeding, clotting and suspected blood disorders.
Consultation for suspected or confirmed blood cancers — leukemia, lymphoma, myeloma and related disorders.
Assessment and management of venous thromboembolism and cancer-associated thrombosis.
Multiple myeloma is a cancer of plasma cells that causes bone disease, anaemia, kidney problems and immune suppression.
Myeloproliferative neoplasms are clonal marrow disorders with overproduction of blood cells and a risk of thrombosis and progression.
Venous thromboembolism includes deep vein thrombosis and pulmonary embolism, requiring prompt diagnosis and anticoagulation.
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Reviewed by Dr. Jitendra Prasad Yadav • Last reviewed: 2026-11-10
Content is educational and aligns with standard medical references; individual evaluation may vary. External links provide context and do not imply endorsement.
Doctor — medically reviewed
Dr. Sachita Baniya
Consultant Haemato-Oncologist & Clinical Hematologist • MBBS, FCPS (Clinical Haematology) • NMC 20158
This condition guide was medically reviewed by Dr. Sachita Baniya.
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