Cytogenetic findings in testicular relapse of multiple myeloma: case report and literature review - Marília Bazzo Catto; Roberta Maria da Silva Oliveira Safranauskas; Tarcila Santos Datoguia; Renata Kiyomi Kishimoto; Daniela Borri; Maria Gabriella Cordeiro; Anna Carolinne Leal do Nascimento; Nelson Hamerschlak; Elvira Deolinda Rodrigues Pereira Velloso (Hematology, Transfusion and Cell Therapy)