This visualization uses a D3.js v4 circle packing layout to display a hierarchical medical dataset, with each node’s area proportional to its leaf count and color mapped via a linear scale. A search bar with autocomplete suggestions allows users to locate nodes by name; selecting a result highlights the corresponding circle and displays the full ancestor path below the search input. The rendering uses SVG and includes interactive zooming and panning, with tooltips on node click. Data is loaded from external JSON files, and the interface is built within a React framework.