Table 2 Summary of clinical and histopathological characteristics of renal tumours among 33 patients with Birt-Hogg-Dubé
Characteristics | Number of patients | |
|---|---|---|
Gender | Male | 21 |
Female | 12 | |
Tumour number | 1 | 20 |
2 | 4 | |
Multifocal | 9 | |
Tumour histology | Oncocytoma/Chromophobe/Hybrid chromophobe- oncocytoma | 23 |
Clear cell | 3 | |
Papillary (type undetermined) | 1 | |
Undifferentiated | 1 | |
N/A | 5 | |
Extra-renal manifestations § | Lung cysts/pneumothorax | 22 |
Fibrofolliculomas | 19 | |
None | 4 |