Richters syndrome (RS), also known as Richters transformation, is a transformation of B cell chronic lymphocytic leukemia (CLL) or hairy cell leukemia into a fast-growing diffuse large B cell lymphoma, a variety of non-Hodgkin lymphoma which is refractory to treatment and carries a bad prognosis. There is also a less common variant in which the CLL changes into a Hodgkins lymphoma. Rarely, transformations to a form of myeloid leukemia have been observed. These extraordinarily rare transformations carry a very poor prognosis. Richters transformation affects about 5% of CLL patients at some point during their lives. Signs and symptoms
Symptoms of Richter’s transformation in a CLL patient include fever (without infection), elevated serum levels of lactate dehydrogenase, and rapidly enlarging lymph nodes. While about 8% of all CLL patients will have elevated levels of serum lactate dehydrogenase (LDH), more than 50% of CLL patients with Richters transformation will have elevated LDH levels.Richters can appear suddenly, even in patients who were in remission. Cause
A case of RS may have arisen by one of two different routes:  a transformation of the CLL cells into lymphoma, or the appearance of an unrelated lymphoma.It is thought that genetic defects may introduce the additional abnormalities necessary to transform CLL cells into Richters syndrome cells. Treatment
Treatment with conventional immunochemotherapy is usually indicated; in younger patients, allogeneic bone marrow transplantation may be curative. Prognosis
The prognosis is generally poor.
Article 25 of the Universal Declaration of Human Rights, adopted 10 December 1948 by the UN General Assembly, contains this text regarding housing and quality of living:

Everyone has the right to a standard of living adequate for the health and well-being of himself and of his family, including food, clothing, housing, and medical care and necessary social services, and the right to security in the event of unemployment, sickness, disability, widowhood, old age or other lack of livelihood in circumstances beyond his control. The ETHOS Typology of Homelessness and Housing Exclusion was developed as a means of improving understanding and measurement of homelessness in Europe, and to provide a common "language" for transnational exchanges on homelessness. The ETHOS approach confirms that homelessness is a process (rather than a static phenomenon) that affects many vulnerable households at different points in their lives.The typology was launched in 2005 and is used for different purposes: as a framework for debate, for data collection purposes, for policy purposes, monitoring purposes, and in the media. This typology is an open exercise that makes abstraction of existing legal definitions in the EU member states. It exists in 25 language versions, the translations being provided mainly by volunteer translators. Despite all the international agreements and efforts, many countries and individuals in power do not consider housing as a human right. Former US President, Jimmy Carter, addressed this issue in a 2017 interview.