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Table 2 The characteristics of pulmonary cysts observed on CT

From: Birt-Hogg-Dubé syndrome encountered at rare lung disease clinic in Anhui province, China

Feature

Cases(n = 48)

Number

 < 10

2 (4%)

10–20

3 (6%)

 > 20

43 (90%)

Distribution

Bilateral to unilateral

  Bilateral

47 (98%)

  Unilateral

1 (2%)

Upper to lower

  Upper dominant

0

  Lower dominant

48 (100%)

Central to peripheral

  Central dominant

41 (85%)

  Peripheral dominant

14 (29%)

  Neither central nor peripheral

4 (8%)

Size of maximum cysts

  < 1 cm

1 (2%)

  1–2 cm

9 (19%)

  2-5 cm

28 (58%)

  > 5 cm

10 (21%)

Shape

  Round to oval

2 (4%)

  Irregular

46 (96%)