Case Name: Red Maple Leaf Toxicosis Signalment: 6-year old female Spanish mustang Presenting Complaint and Patient History: Colic and bloody urine were noted over the past 24 hours.  The horse is fed coastal hay and sweet feed, and is turned out daily on a lush pasture.  The owner reports that a large branch from a maple tree fell into the pasture approximately 2 weeks previously, and has not yet been cleared away. Physical Examination: Extremely pale mucous membranes, moderate tachycardia and tachypnea.  Mild to moderate abdominal discomfort. Hematology Images: Blood Smear 2 Blood smear 1   RBC morphology Many eccentrocytes are seen in these images, and occasional ghost cells are present.  Eccentrocytes and pyknocytes form as a result of oxidative damage to the RBC membrane.  Ghost cells indicate that there is intravascular hemolysis. Supporting Documentation (lab results, etc.) Search File Description Date Uploaded Urinalysis  ·  pdf/4kB PDF 3/3/2008 Chemistry Panel  ·  pdf/4kB PDF 2/4/2008 CBC  ·  pdf/4kB PDF 2/4/2008