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Table 1 Comparison of Group 1 (successful endoscopic removal) and Group 2 (unsuccessful endoscopic removal) dogs with regard to type and location of foreign body, size of foreign body, mucosal damage, short term complications, time to spontaneous oral feeding and long-term clinical outcome.

From: Oesophageal foreign bodies in dogs: factors affecting success of endoscopic retrieval

Variable Group 1 (n = 30) Group 2 (n = 14)
Type of Foreign Body
Bone 26 (86.7%) 13 (93.3%)
Soft 4 (13.3%) -
Stick - 1 (7.1%)
Location of Foreign Body
Cervical oesophagus 3 (10%) 3 (21.4%)
Heart base 6 (20%) 2 (14.3%)
Caudal to heart base 21 (70%) 9 (64.3%)
Normalised mean length (cm)* 3.3 3.3
Normalised mean height (cm)* 2.2 1.9
Degree of oesophagitis
Mild 16 (53.3%) 4 (28.6%)
Moderate/severe 12 (40.0%) 9 (64.3%)
Not specified 2 (6.7%) 1 (7.1%)
Short-term complications
Mild 3 (10%) 2 (14.3%)
Severe 5 (16.7%) 3 (21.4%)
Median time to spontaneous oral feeding (hours) 24 (12-240) 120 (24-360)
Long Term complications** 5 3
  1. FB - foreign body
  2. *Measurement were only assessed in 29 cases
  3. ** Only 21 of Group 1 and eight of Group 2 dogs were available for long-term, follow-up