Endocrine Abstracts

Introduction: Leydig cell tumors (LCT) are rare testicular tumors, characterized by mostly benign etiology. Due to their secretory activity androgen- and/or estrogen-excess can occur.Case report: A 42-year old patient with recent history of cerebrovascular incident was admitted to the hematology department for diagnostic work-up of new-onset erythrocytosis (hemoglobin 185 g/l [reference 127–163], hematocrit 0.53 [0.37–0.46]). Myeloproliferati...