Dr. Guilherme Perini is a hematologist at Hospital Israelita Albert Einstein in São Paulo, Brazil. He specializes in lymphoma and hematological malignancies. He received his medical education at the Federal University of Goiás in 2003, he completed his medical residency in Clinical Medicine in 2005 and Hematology and Hemotherapy in 2007 at the Medical School of Ribeirão Preto - USP. He has a postgraduate degree in Hematology and Hemotherapy at the Hospital Israelita Albert Einstein. Guilherme was a Former Fellow of the Lymphoma and Myeloma Department of The University of Texas MD Anderson Cancer Center in 2009 as well as Doctor of Protect the Future program at the American Porphyria Foundation in 2010. He became a Specialist in Lymphoma by the European School of Oncology through the Certificate of Competence in Lymphomas Program, University of Uhlm.