This article explores the effectiveness of the Case Study method in developing professional medical vocabulary among EFL medical students. The research demonstrates that integrating authentic clinical cases into English language classes substantially enhances students’ terminological competence, lexical retention, and ability to use specialized vocabulary in professional contexts. The experimental results show a statistically significant improvement in both receptive and productive vocabulary skills compared to traditional vocabulary teaching methods. The study highlights the advantages of contextual, problem-based learning in English for Specific Purposes (ESP) and offers practical recommendations for implementing the Case Study approach in medical education.

Case Study method, professional vocabulary, medical terminology

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