| Feature | Group I (Primarily Pulmonary) | Group II (Extra-Pulmonary) | | :--- | :--- | :--- | | | Lungs / Thoracic cavity | Outside the lungs (nodes, brain, bones) | | Pathophysiology | Localized primary complex | Hematogenous dissemination | | Radiology | Hilar adenopathy, lung infiltrates | Often normal lung X-ray (unless miliary) | | Contagiousness | Low (children usually paucibacillary) | None (unless concomitant pulmonary TB) | | Example | TB Lymphadenitis (Hilar) | TB Meningitis, Scrofula (Neck) |
The edema in the surrounding mucosa begins to decrease. The ulcer floor remains covered with slough, but the margins become more distinct. Intestinal Research 2. Healing Stage (H) sakitamiwa classification