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Table 2 HRCT findings, histopathology and stages of LC in patients with LC-IPF (n = 34)

From: Prevalence, risk factors, and impact of lung Cancer on outcomes of idiopathic pulmonary fibrosis: a study from the Middle East

Characteristic No. (%)
Time of LC diagnosis
 At the time of IPF diagnosis 12 (35.3)
 After IPF diagnosis 22 (64.7)
Location
 Centrala 9 (26.5)
 Peripheral 25 (73.5)
Lobes of the lung
 Upper lobes 10 (29.5)
 Middle lobe 1 (2.9)
 Lower lobes 23 (67.6)
HRCT background
 Fibrotic backgroundb 23 (67.6)
 Nonfibrotic background 11 (32.4)
Histopathology
 Squamous cell carcinoma 15 (44)
 Adenocarcinoma 14 (41)
 Adenosquamous carcinoma 2 (6)
 large cell carcinoma 2 (6)
 Undifferentiated carcinoma 1 (3)
Stage
 I 8 (23.3)
 II 5 (15.0)
 III 9 (26.4)
 IV 12 (35.3)
  1. LC-IPF combined lung cancer and idiopathic pulmonary fibrosis, HRCT high-resolution computed tomography
  2. aCentral; the tumor was considered central when located in an area 3 cm far from the pleura
  3. bFibrotic background; includes reticular distortion, ground-glass opacity, and honeycombing