Longterm survival after LITT of hepatic metastases of colorectal carcinomas and the influence of different factors. Unique is the comparability caused by the treatment made only by one therapist. One oft he questions was, if LITT only should be an palliative therapy, or better be used equal to surgery in the future. Material and methods: At this retrospective study data of 119 (95 males and 24 females, mean age between 61 and 70) patients with hepatic metastases of colorectal carcinomas and previous therapy with Laser Induced Thermotherapy (LITT) were evaluated concerning mean survival time and potential influencing factors. At the time of request 110 of 119 patients were dead. I distinguished between varaibale (number and power of applikators, time of power and total number of LITT) and non- variable factors (age, sex, comorbidities by ASA classification and synchronous/ metachronous metastases). For statistical evaluation I used the Kaplan- Meier- Method. Results: The median survival time amounted to 27 months (95% CI 29,8 months to 42,5 months). Collectively the range in survival time was from 2 up to 162 months. The overall- survival rates at 1-, 3- and 5 years were 80,67%, 33,61 % and 11,76 %. Statistically significant were the influence of the median survival time caused by different Komorbidities classified by ASA, between patients with or without extrahepatic metastases, between different power and between different total numbers of interventions. The longest median ...