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Deep Vein Thrombosis (Hematology Perspective)

Thrombus formation in deep veins of legs or pelvis with hematologic evaluation, anticoagulation, and recurrence prevention.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Hematoloji department. Book Appointment →

What is Deep Vein Thrombosis (Hematology Perspective)?

Deep vein thrombosis (DVT) is the formation of thrombus in the deep veins, most often of the lower extremities (calf, popliteal, femoral, iliac) or pelvis; upper extremity DVT, especially catheter-related, accounts for a smaller share. DVT is part of the venous thromboembolism (VTE) spectrum together with pulmonary embolism, and the hematologic management framework is identical: assess provoking context, define unprovoked vs provoked etiology, evaluate thrombophilia in selected cases, choose anticoagulation, and decide duration.

Pathogenesis follows the Virchow triad: stasis (immobility, surgery, paralysis), endothelial injury (trauma, surgery, catheter), and hypercoagulability (inherited or acquired thrombophilia, malignancy, hormones, pregnancy). Inherited thrombophilias (factor V Leiden, prothrombin G20210A, antithrombin/protein C/S deficiency) and acquired ones (antiphospholipid syndrome, JAK2-mutant myeloproliferative neoplasm, PNH) increase recurrence risk; testing is reserved for unprovoked VTE in young patients, family history, or unusual sites.

Clinical presentation ranges from asymptomatic DVT to leg swelling, pain, warmth, erythema, and palpable cord; PE may be the first presentation. Diagnosis uses Wells score, D-dimer in low-probability cases, and compression ultrasound. Treatment is anticoagulation with DOAC, LMWH, or warfarin; isolated distal DVT can be observed with serial ultrasound or anticoagulated based on risk. Long-term complications include post-thrombotic syndrome (chronic venous insufficiency) and recurrent VTE.

Symptoms

Unilateral leg swelling
Calf or thigh pain, tenderness
Warmth, erythema
Engorged superficial veins
Palpable cord (rare)
Skin discoloration, cyanosis
Pitting edema
Pain on dorsiflexion (Homan sign — non-specific)
Asymptomatic DVT (incidental)
Phlegmasia cerulea dolens (extensive iliofemoral thrombosis with massive swelling)
Pulmonary embolism symptoms (sudden dyspnea, chest pain)
Upper extremity DVT: arm swelling, neck vein distention
Pelvic DVT: pelvic pain, leg swelling
Post-thrombotic syndrome: chronic edema, skin changes, ulcers
Fever (low grade)

Risk Factors

Recent surgery (orthopedic, abdominal, pelvic)
Prolonged immobilization, hospitalization, long travel
Active malignancy, chemotherapy
Pregnancy, postpartum
Estrogen therapy, oral contraceptives
Inherited thrombophilia (factor V Leiden, prothrombin gene, AT/protein C/S deficiency)
Antiphospholipid syndrome
Prior VTE
Obesity, age
Smoking
Heart failure, COPD, IBD, nephrotic syndrome
Central venous catheter (upper extremity DVT)
Trauma, fracture
Spinal cord injury
JAK2 V617F myeloproliferative neoplasm, PNH

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Unilateral leg swelling and pain
  • Calf tenderness after surgery, immobilization, or long travel
  • Pregnancy with new leg pain or swelling
  • Cancer patient with new limb swelling
  • Sudden dyspnea or chest pain (concern for PE)
  • Recurrent unexplained VTE
  • Family history of VTE for thrombophilia evaluation
  • Skin changes, ulcers, chronic leg pain after prior DVT (post-thrombotic syndrome)

Treatment Methods

01
Wells score for pretest probability
02
D-dimer in low-probability cases
03
Compression ultrasound (proximal or whole-leg) as first-line imaging
04
CT venography or MR venography for pelvic and IVC thrombosis
05
Risk assessment for active cancer, thrombophilia, pregnancy
06
Anticoagulation: DOAC (apixaban, rivaroxaban, dabigatran, edoxaban) as first-line in most patients
07
LMWH preferred in cancer-associated thrombosis and pregnancy; DOACs (apixaban, edoxaban) acceptable in many cancer patients
08
Warfarin if DOAC contraindicated (severe renal impairment, antiphospholipid syndrome triple positive, mechanical valve)
09
Duration: 3 months for provoked DVT by transient factor; extended/indefinite for unprovoked or persistent risk
10
Catheter-directed thrombolysis or thrombectomy in selected iliofemoral DVT or phlegmasia cerulea dolens
11
Inferior vena cava filter only if anticoagulation contraindicated or recurrent VTE on therapy
12
Compression stockings (graduated) for symptomatic DVT and prevention of post-thrombotic syndrome
13
Thrombophilia workup in young, unprovoked, recurrent, or unusual-site VTE
14
Cancer screening guided by age and symptoms
15
Patient education on adherence, bleeding risk, drug interactions, recurrence symptoms
16
Mobilization and ambulation as soon as tolerated
17
Follow-up: 1, 3, 6 months and annually for unprovoked VTE; hematology referral
18
Lifestyle: smoking cessation, weight management, hydration, leg movement during long travel
19
Pregnancy management: LMWH, hematology and obstetric coordination
20
Postoperative VTE prophylaxis in high-risk patients (LMWH, mechanical compression)

Which Department to Visit?

You can visit our Hematoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.