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| Diagnosis | Left-side group (n=39) | Right-side group (n=45) | TNM stage Ia |
|---|---|---|---|
| Malignancy | |||
| Invasive adenocarcinoma | 15 | 10 | 25 |
| Microinvasive adenocarcinoma | 10 | 9 | 19 |
| Adenocarcinoma in situ | 8 | 17 | 25 |
| Benign diseases | |||
| AAH | 2 | 5 | — |
| Fibroplastic proliferation | 2 | 0 | — |
| Inflammatory pseudotumor | 0 | 1 | — |
| Tuberculosis | 1 | 2 | — |
| Aspergillosis | 1 | 0 | — |
| Cryptococcus infection | 0 | 1 | — |
AAH, atypical adenomatous hyperplasia.
