What Do We Know About Psychological Outcomes of Lymphoma in Adults?

The goal of this review is to present the results of research on the influence of lymphoma on patients' emotional status and cognitive functioning. A literature search was conducted to identify articles in English that investigated short-and long-term psychological outcomes of lymphoma and lymphoma treatment. Studies published prior to July 2016 were located by an electronic search using relevant databases such as ScienceDirect and PubMed. The search terms used included both medical subject headings and keywords such as "Hodgkin lymphoma," "non-Hodgkin lymphoma," "therapy," "treatment," "malignant," "psychology," "cognitive function," "emotion," "psychological adaptation," "depression," and "anxiety. "The retrieved publications were independently evaluated by two reviewers. Articles were selected based on the applicable titles and abstracts. The lists of eligible publications were compared and disagreements were resolved by discussion. Of the 1,418 articles identified in the search, we chose 39 publications, which in our opinion could be interesting or useful for psychologists. Studies show that lymphoma and its treatment lead to severe distress. Thirty-six percent of patients manifest symptoms of anxiety and depression, which are most often associated with the so-called "B-symptoms,"which mark poor prognosis or with side effects of chemotherapy such as nausea or vomiting. Reports also indicate that lymphoma patients may develop mild to severe cognitive decline. Its manifestations may range from benign problems with attention, thinking, and memory to severe cognitive impairment, that is, subcortical dementia. The etiology of intellectual deterioration in lymphoma has not been well described yet, but it may be related to the disease process or to the treatment. Additionally, literature demonstrates that lymphoma may lead to adverse changes in patient's professional life such as resignation or early retirement.