title: Exacerbation of antiphospholipid antibody syndrome after treatment of localized cancer: a report of two cases.
abstract: Patients with malignancy often present with a variety of coagulation abnormalities which may ultimately lead to recurrent arterial and venous thromboses. Recently the presence of antiphospholipid antibodies in cancer patients has been proposed as one of the potential mechanisms promoting hypercoagulability. Here we report two consecutive patients with localized tumors, one suffering from breast cancer and another presenting with colorectal cancer, who experienced dramatic exacerbation of the antiphospholipid antibody syndrome (APAS) within 4 weeks after surgery. In the first patient who had also received one course of adjuvant chemotherapy, major ischemic stroke and recurrent venous thromboembolism were paralleled by the development of ulcerative livedoid vasculitis and pancytopenia, constituting the diagnosis of systemic lupus erythematosus with secondary APAS. In the second patient, progressive thrombotic occlusion of the superior and inferior vena cava was associated with bilateral pulmonary embolism, acute renal failure, and disabling soft tissue edema. Although not fulfilling the classic criteria of "catastrophic" APAS, the clinical features were life threatening and appeared to be refractory to oral anticoagulation with phenprocoumon. In addition, a diagnosis of Trousseau's syndrome was unlikely due to missing evidence of gross metastatic disease. Besides a suggested treatment strategy comprising high doses of low-molecular-weight heparin, potential pathogenic mechanisms are discussed in consideration of a recently proposed "thrombotic storm," which may cause multiple thromboses after an initial provocation in patients with known hypercoagulability.
authors.affiliation: Zentrum für Innere Medizin, Medizinische Klinik II (Onkologie und Hämatolgie), Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, Germany. drflanger@aol.com
authors.forename: F
authors.initials: F
authors.lastname: Langer
authors.forename: B
authors.initials: B
authors.lastname: Eifrig
authors.forename: G
authors.initials: G
authors.lastname: Marx
authors.forename: A
authors.initials: A
authors.lastname: Stork
authors.forename: S
authors.initials: S
authors.lastname: Hegewisch-Becker
authors.forename: D K
authors.initials: DK
authors.lastname: Hossfeld
mesh_terms: D000328:Adult; D016736:Antiphospholipid Syndrome / Q000188:drug therapy / Q000209:etiology*; D001943:Breast Neoplasms / Q000097:blood / Q000150:complications / Q000628:therapy; D017024:Chemotherapy, Adjuvant; D002809:Chondroitin Sulfates / Q000008:administration & dosage; D015179:Colorectal Neoplasms / Q000097:blood / Q000150:complications / Q000628:therapy; D003871:Dermatan Sulfate / Q000008:administration & dosage; D004338:Drug Combinations; D005260:Female; D006495:Heparin, Low-Molecular-Weight / Q000008:administration & dosage; D006497:Heparan Sulfate / Q000008:administration & dosage; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000175:diagnosis / Q000209:etiology; D008875:Middle Aged; D009369:Neoplasms / Q000097:blood* / Q000150:complications; D020521:Stroke / Q000209:etiology; D013923:Thromboembolism / Q000209:etiology; D019851:Thrombophilia / Q000150:complications / Q000188:drug therapy / Q000209:etiology
chemical_list: D002809:Chondroitin Sulfates; D003871:Dermatan Sulfate; D004338:Drug Combinations; D006495:Heparin, Low-Molecular-Weight; D006497:Heparan Sulfate; C035838:danaparoid