Phenotypic presentation of thrombophilia in double heterozygote for factor v leiden and prothrombin 20210 G>A mutations: Case report

Abstract

Physicians usually do not suspect pulmonary thromboembolism in younger patients except in those who have thrombophilia. In those latter patients some special conditions such as trauma or surgery may provoke the disease. In some adult persons, thrombophilia may still remain unrecognized, until appearance of additional conditions influence development of thrombosis. A 55-year-old Caucasian female, non-smoker, experienced sudden chest pain and hemoptysis without chest trauma. History taking revealed type 2 diabetes mellitus and hypothyroidism. She was overweight with body mass index 29.0. The review of the family history revealed that her father and mother died of brain infarction, while her 22-year-old son and 24-year-old daughter were healthy. Due to suspicion for thrombosis, multi-slice computerized tomography thorax scan was done and pulmonary embolism was diagnosed. Although without clear risk factor for thrombosis in our patient, we performed laboratory investigation for congenital thrombophilia. Genetic analysis showed double heterozygous for factor V Leiden and prothrombin 20210 G>A mutations. Congenital thrombophilia was risk factor for thrombosis in our patient but haemostatic imbalance was not previously clinically recognized. She had two pregnancies without complications. Appearance of other associative factors such as endocrine disorders - hypothyroidism and metabolic syndrome with diabetes type 2, and overweigh were additional potential triggers for clinical manifestation of pulmonary thromboembolism in her adult age. Her children underwent genetic analysis, too. The son was also double heterozygous for factor V Leiden and prothrombin 20210 G>A mutations, while daughter was heterozygous for factor V Leiden, and none had clinical signs of thrombosis.