SUMMARY AIM OF THE STUDY. To evaluate the needs of medical care and the quality of care in cancer patients, experiencing pain. METHODS. One hundred cancer patients experiencing pain were interviewed in Kaunas Medical university Oncology hospital and Oncology department of Kaunas Medical university hospital (KMUH).. Age range- 27-68 years. Two questionnaires were used for the interview: “Pain anamnesis” and “McGill’s pain questionnaire”- specific questionnaire of pain-words. RESULTS. The results of questionnaires were analyzed. Men more often than women experienced chronic pain (17% and 48 %). There was statistically positive correlation between the strongest pain in 24 hours and weakest pain in 24 hours experience. While analyzing adverse reactions of various treatment methods in the respondents treated in KMUH Oncology department and KMU Oncology hospital the anorexia (p ≤ 0,05), constipation and insomnia were more common in KMUH (p ≤ 0,05). The quality of care according to 58% of Patients in KMUH and 34% in KMU OH was not sufficient (p ≤ 0,05). About 12% of KMUH patients and 46% in KMU OH declared that the quality of care is worse during the weekends. (p ≤ 0,05) CONCLUSIONS. A lot of adverse reactions appear while treating cancer patients with pain. One can decrease or even eliminate these reactions by purposeful care activities and providing information needed. Increasing the quality of care, the evaluation of received care by cancer pain patients will become better. ... [to full text]