For patients with platelets > 100,000 cells/ul (100x10^9/L) able to take aspirin daily as prophylactic anticoagulation therapy for ARMS 2+3 (patients intolerant to aspirin may use warfarin, low-molecular-weight heparin or equivalent anti-platelet therapy) Patients who are not already on anticoagulation should be able to take low-dose aspirin (81 mg) daily; NOTE: if aspirin is contraindicated for other reasons, the patient may be considered for the study after consultation with the study chair regarding other alternatives including possible use of warfarin or low molecular weight heparin; patients unable to take any form of prophylaxis are not eligible Able to take a minimum dose of aspirin 81 mg daily as prophylactic anticoagulation if not on warfarin, low molecular weight heparin or oral factor Xa inhibitor; patients intolerant to acetylsalicylic acid (ASA) may use warfarin or low molecular weight heparin at doses designed to treat deep venous thrombosis Females of reproductive potential must adhere to the scheduled pregnancy testing as required in the Revlimid REMSĀ® program; able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to aspirin [ASA] may use low molecular weight heparin or equivalent) Able to take aspirin 81 mg orally daily or if intolerant of aspirin, able to take a substitute thromboprophylaxis such as low molecular weight heparin Able to take aspirin 81 mg daily or if intolerant of aspirin, able to take a substitute thromboprophylaxis such as low molecular weight heparin at a thromboprophylactic dose (such as enoxaparin 0.5 mg/kg once daily) Able to take aspirin (81 mg) daily or alternative therapy as prophylactic anticoagulation Willing and able to take aspirin (81 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily for prophylactic anticoagulation (patients intolerant to acetylsalicylic acid, ASA, may use warfarin or low molecular weight heparin or other anticoagulants deemed appropriate by the principal investigator [PI]) For patients with bulky disease (tumors > 5 cm); must be able to take aspirin (81 mg or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Females of reproductive potential must adhere to the scheduled pregnancy testing as required in the Revlimid REMS program; able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to ASA may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (subjects intolerant to aspirin may use warfarin or low molecular weight heparin) if clinically indicated Able to take aspirin 81 mg daily or if intolerant of aspirin, able to take a substitute thromboprophylaxis such as low molecular weight heparin at a thromboprophylactic dose (such as enoxaparin 0.5 mg/kg once daily) Able to take aspirin (81 and 325 mg) daily as prophylactic anticoagulation (patients intolerant to aspirin [ASA] may use warfarin or low molecular weight heparin) Subject is able to take prophylactic anticoagulation as detailed in section 9.1 (patients intolerant to aspirin may use warfarin or low molecular weight heparin). Current or recent (within 10 days prior to first dose of bevacizumab) use of aspirin (> 325 mg/day); prophylactic and therapeutic use of anticoagulants is allowed, e.g., warfarin (1 mg once daily [QD]) for catheter prophylaxis and prophylactic low molecular weight heparin (i.e., enoxaparin [40 mg QD]) Must be able to take acetylsalicylic acid (ASA) daily as prophylactic anticoagulation; patients intolerant to ASA may use low molecular weight heparin or equivalent; warfarin will be allowed provided patient is full anticoagulated, with an international normalized ratio (INR) of 2-3 Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Patient must be able and willing to receive anticoagulation therapy with aspirin 70-325 mg daily prophylaxis, low molecular weight heparin, factor X inhibitors or warfarin; patients unable or unwilling to take any prophylaxis are NOT eligible Must be able to take low-dose aspirin, low molecular weight heparin, or other equivalent antithrombotic or anticoagulant daily as prophylactic anticoagulation. Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use low molecular weight heparin) Low dose aspirin (? 100 mg daily). If currently not on anticoagulation medication, willing and able to take aspirin (81 or 325 mg) daily; if aspirin is contraindicated, the patient may be considered for the study if on therapeutic dose warfarin or low molecular weight heparin; patients unable to take any prophylaxis are not eligible If needed, patients should be able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation Systemic anticoagulation or daily aspirin dose exceeding 325 mg per day Able to take aspirin, or warfarin, or low molecular weight heparin as prophylactic anticoagulation Must be able to take acetylsalicylic acid (ASA) (81 or 325 mg) daily as prophylactic anticoagulation. Patients intolerant to ASA may use low molecular weight heparin. Lovenox is recommended. Coumadin will be allowed provided the patient is fully anticoagulated, with an international normalized ratio (INR) of 2 to 3 Must be able to take concurrent aspirin 70mg to 325 mg daily (or enoxaparin if aspirin allergic) Concurrent use of aspirin > 100 mg daily Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin), unless baseline prothrombin time (PT) or partial thromboplastin time (PTT) is >= 1.5 ULN, in which case thromboprophylaxis is not required Able to take acetylsalicylic acid (ASA) (81 or 325 mg) daily as prophylactic anticoagulation. Patients intolerant to ASA may use low molecular weight heparin. Lovenox is recommended. Coumadin will be allowed provided the patient is fully anticoagulated, with an INR of 2 or 3. Must have been able to take concurrent aspirin 81 to 325 mg daily (or enoxaparin 40 mg subcutaneously daily [or its equivalent] if allergic to aspirin), per published standard or institutional standard of care, as prophylactic anticoagulation. NOTE: For participants with prior history of deep vein thrombosis (DVT), low-molecular-weight heparin (LMWH) was mandatory. Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to aspirin may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to aspirin [ASA] may use warfarin or low molecular weight heparin) Use of 81-100 mg daily aspirin or up to 700 mg aspirin not more than once a week are eligible. Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to ASA may use warfarin or low molecular weight heparin). Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation. Patients intolerant to ASA may use low molecular weight heparin. Lovenox is recommended. Coumadin will be allowed provided the patient is fully anticoagulate with INR 2.0 to 2.5. Patient must be able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) if no additional risk factor for venous thromboembolism (VTE) other than myeloma diagnosis according to International Myeloma Working Group (IMW) guidelines Able to take aspirin (81 or 325mg) daily as prophylactic anticoagulation (patients intolerant to ASA may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (subjects intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin 81 mg daily Able to take aspirin 325 mg or 81 mg daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use Coumadin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Use of aspirin is NOT an exclusion criterion as long as the daily dose does not exceed 325 mg daily; initiation of ADAPT therapy requires patient to discontinue aspirin for 18 months Patients must be able to take daily prophylactic anticoagulation medication, such as: aspirin (81 or 325 mg) warfarin, low molecular weight heparin, or other medications as clinically indicated Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant of aspirin or at increased risk of venous thrombosis may use warfarin or low molecular weight heparin) Must be able to take concurrent aspirin 325 mg daily Able to receive prophylactic anticoagulation with aspirin, warfarin or low molecular weight heparin when required for lenalidomide administration Able to take aspirin daily as prophylactic anticoagulation therapy (subjects intolerant to aspirin may use warfarin or low-molecular-weight heparin). If currently not on anticoagulation medication, willing and able to take aspirin (325 mg) daily; note: if aspirin is contraindicated, the patient may be considered for the study after if on therapeutic dose warfarin or low molecular weight heparin; patients unable to take any prophylaxis are not eligible Females of reproductive potential must adhere to the scheduled pregnancy testing as required in the Revlimid REMSĀ® program; able to take aspirin (81 or 325 mg) daily as prophylactic anticoagulation (patients intolerant to acetylsalicylic acid [ASA] may use warfarin or low molecular weight heparin) Use of heparin or acetylsalicylic acid (ASA)