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Table 2 Characteristics of synchronous malignancies and synchronous oesophageal malignancies

From: Value of oesophagoscopy and bronchoscopy in diagnosis of synchronous malignancies in patients with head and neck squamous cell carcinomas

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
  1. *Other sites (number): prostate (4), liver (2), sigmoid (1), thyroid (1), stomach (1)
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