Health information systems on the web basically support the English language. To access high-quality online health information it is frequently a barrier for non-English speakers or speakers of English as a foreign language. In this work we present a cross-language retrieval system to support Greek users in the medical domain, overcome the language barrier. We have performed a case study on the impact of stemming in the cross lingual retrieval in association with dictionary based query translation techniques. Finally, we conclude with results from a preliminary evaluation of the Greek-English CLIR prototype.