Table 2 Characteristics of synchronous malignancies and synchronous oesophageal malignancies
Parameters | Number of patients |
|---|---|
Sites of synchronous malignancies (n, % among all synchronous malignancies) | |
 -Oesophagus | 41 (73.2) |
 -Lung | 5 (8.9) |
 -Head and neck | 3 (5.4) |
 -Other sites * | 9 (15.5) |
Sites of primary malignancies giving rise to synchronous malignancies (n, % among total number of patients with the primary malignancy) | |
 -Hypopharynx | 30 (27.3) |
 -Oral cavity | 14 (3.9) |
 -Larynx | 8 (6.3) |
 -Oropharynx | 4 (5.3) |
 -Paranasal sinuses and nasal cavity | 1 (3) |
Rate of synchronous oesophageal malignancies (n, %) | 41 (5.8) |
Distribution in oesophagus: (n, % among all synchronous oesophageal malignancies) | |
 -Upper 1/3 of oesophagus | 14 (34.1) |
 -Middle 1/3 of oesophagus | 11 (26.9) |
 -Lower 1/3 of oesophagus | 16 (39) |
Sites of primary malignancies giving rise to synchronous oesophageal malignancies (n, % among total number of patients with the primary malignancy) | |
 -Hypopharynx | 25 (22.7) |
 -Oral cavity | 8 (2.2) |
 -Larynx | 4 (3.2) |
 -Oropharynx | 4 (5.4) |
 -Paranasal sinuses and nasal cavity | 0 (0) |
Stages of synchronous primary oesophageal malignancies (n, %) | |
 -Stage 1 | 22 (53.7) |
 -Stage 2 | 4 (9.8) |
 -Stage 3 | 10 (24.4) |
 -Stage 4 | 5 (12.2) |
Risk factors for synchronous oesophageal malignancies (Odds ratio) | |
 -Male gender | 14.89 |
 -Smoker status | 3.33 |
 -Drinker status | 26.14 |
 -Primary hypopharyngeal cancer | 10.59 |