Table 1. Patient characteristics and underlying conditions.

Characteristic/condition	No. of patients (%)
Sex (male/female)	66/43
Pulmonary emphysema	74 (67.9)
Smoking habit	47 (43.1)
Cardiac disease	44 (40.4)
Alcoholic	25 (22.9)
Diabetes mellitus	18 (16.5)
Liver disorder	16 (14.7)
Collagen disease	6 (5.5)
Renal failure	4 (3.7)
Malignancy	41 (37.6)
lung cancer	15 (13.8)
gastric cancer	14 (12.8)
oesophageal cancer	10 (9.2)
colon cancer	2 (1.8)
Presenting symptoms
cough	103 (94.5)
sputum	81 (74.3)
fever	73 (67.0)
dyspnea	19 (17.4)
general weakness	18 (16.5)