A diagnosis characterized by hemarthrosis, bleeding into soft tissue, and prolonged bleeding times is likely?

The diagnosis characterized by hemarthrosis, bleeding into soft tissue, and prolonged bleeding times is hemophilia. Hemophilia is a genetic bleeding disorder resulting from a deficiency in specific clotting factors, most commonly factor VIII or factor IX. Individuals with hemophilia experience episodes of excessive bleeding, particularly into joints and muscles, which is what hemarthrosis refers to.

Prolonged bleeding times in hemophilia are a direct consequence of the impaired ability to form stable blood clots due to the lack of these clotting factors. Since hemophilia stems from a hereditary issue with coagulation factors, it leads to frequent bleeding episodes even with minor injuries.

In contrast to the other conditions listed, hemophilia specifically presents these hallmark symptoms, making it the most appropriate diagnosis in this scenario.