Clinicopathological findings of MNNs
Case no. | Age range (years)/sex | Clinical findings | Tumour size (mm) | Gross | Mitotic count/10HPF | Fibrous bands | Tumour cell atypia | Diagnosis | Follow-up (months)/ outcome |
1 | Late 70s/female | Incidental finding during work-up for anaemia | 55×45×30 | C | 0–1 | No | No | MNT | 4/D |
2 | Late 60s/female | Incidental finding during work-up for cough | 40×40×25 | C | 1 | No | No | MNT | 51/NED |
3 | Late 50s/male | Incidental finding on CT | 40×25×15 | C | 0–1 | No | No | MNT | 16/NED |
4 | Late 40s/male | Myasthenia gravis | 100×78×50 | S, rare micro-C | 1 | No | No | MNT | 18/NED |
5 | Early 50s/male | Incidental finding on CT | 35×35×10 | C | 2 | Focal | Obvious | MNC | 52/NED |
6 | Late 40s/male | Incidental finding during work-up for dizziness | 11×10×5 | C | 5 | Yes | Obvious | MNC | 48/NED |
7 | Late 50s/male | Chest pain | 38×30×20 | S, rare micro-C | 7 | Focal | Obvious | MNC | 1/NED |
All tumours were stage I.
C, cystic; D, death; HPF, high-power field; MNC, micronodular thymic carcinoma; MNN, micro nodularthymic neoplasm; MNT, micronodular thymoma; NED, no evidence of disease; S, solid cystic.