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==Diagnosis==
==Diagnosis==
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*Clinical signs
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*Lack of passage of a milk stool
*'''CAREFUL''' digital examination ''per rectum'' (for diagnosis only)
*'''CAREFUL''' digital examination ''per rectum'' (for diagnosis only)
*Abdominal palpation (meconium may be palpable if abdominal tympany is not too advanced)
*Abdominal palpation (meconium may be palpable if abdominal tympany is not too advanced)
*Abdominal ultrasound
*Abdominal ultrasound
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*Abdominal radiography
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*Abdominal radiography of faecal masses in the colon<ref>Edwards, G.B (1997) Diseases and surgery of the small colon. ''Vet Clin N Am: Equine Pract'', 13:359-375. In: </ref>
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Diagnosis is based on clinical signs and detection of a firm
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mass upon digital rectal, lack of passage of milk stool and
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abdominal palpation or radiography of faecal masses in the
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colon (Edwards 1997).(Pusterla)
==Differential Diagnoses==
==Differential Diagnoses==