Hostility in cancer patients as an underexplored facet of distress.

Objective: In the present study, we aimed to assess hostility and to examine its association with formal psychiatric diagnosis, coping, cancer worries, and quality of life in cancer patients.

Methods: The World Health Organization (WHO) Composite International Diagnostic Interview (CIDI) to make an ICD-10 (International Classification of Disease) psychiatric diagnosis was applied to 516 cancer outpatients. The patients also completed the Brief Symptom Inventory-53 to assess hostility (BSI-HOS), and the Mini-Mental Adjustment to cancer scale (Mini-MAC). A subset of patients completed the Cancer Worries Inventory (CWI), the Openness Scale, and the Quality of Life Index.

Results: By analyzing the distribution of the responses 25% of the patients had moderate and 11% high levels of hostility, with about 20% being BSI-HOS "cases." Hostility was higher in patients with a formal ICD-10 psychiatric diagnosis (mainly major depression, other depressive disorders, anxiety disorders) than patients without ICD-10 diagnosis. However, about 25% of ICD-10-non cases also had moderate-to-high hostility levels. Hostility was associated with Mini-MAC hopelessness and anxious preoccupation, poorer quality of life, worries (mainly problems sin interpersonal relationships), and inability to openly discuss these problems within the family.

Conclusions: Hostility and its components should be considered as dimensions to be more carefully explored in screening for distress in cancer clinical settings for its implications in negatively impacting on quality of life, coping and relationships with the family, and possibly the health care system.