Aphasia is a complex acquired language impairment that results from damage to specific brain regions, affecting one or more aspects of language, typically caused by stroke. Discourse analysis allows linguistic analysis at different levels of language production and processing. Analysis of discourse in aphasia is particularly valuable because it can help to understand what happens to the structure of discourse when language processing and production are disrupted. Despite a large number of studies conducted, the nature of the relationship between two discourse levels (microstructure and macrostructure) is not yet fully known. Structuralist approaches stress the independence of discourse levels, while more contemporary multi-level approach predicts the connection between microstructure and macrostructure. The aim of this paper is to describe the narrative discourse of people with aphasia using a multi-level approach. More precisely, it has focused on the relationship between measures of lexical diversity at the microstructural level and cohesion and coherence at the macrostructural level of narrative discourse. The study included the analysis of transcripts of 34 subjects (17 with aphasia and 17 language healthy adults in the control group) aged 48 to 80 years. Part of the transcripts was taken from Croatian discourse corpus of speakers with aphasia and their control group and part was collected for the purposes of this research. Data analysis was performed in the CLAN program, using a 4-point scale to measure global coherence and extracting cohesive ties from stories to measure cohesion. Statistical data processing was done in IBM SPSS Statistic – version 26 (Shapiro-Wilk test, t-test for independent samples, Mann-Whitney U test, Person correlation coefficient, descriptive statistics). The results of this research confirm that people with aphasia are less successful than healthy adults in the production of coherent discourse, use of cohesive ties and lexical diversity. Contrary to expectations, connection between lexical diversity and macrostructure measures (cohesion, coherence) was not found. However, due to strong theoretical implications of multi-level approach and methodological limitations of this research, caution is needed in generalizing the results and it is important to conduct more research on this topic.