Dogs may develop lesions within the spleen. These lesions may cause serious adverse effects on the dog's health and should be evaluated by a veterinarian for proper diagnosis and treatment.
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Identification
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A splenic lesion is a mass found within the spleen. These lesions may be benign or malignant and may require treatment and surgical removal.
Canine Hemangiosarcoma
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According to the College Of Veterinary Medicine at the University Of Georgia, the most common lesion within the spleen of the dog is the hemangiosarcoma (or HSA). This type of lesion accounts for 51 to 66 percent of all tumors in the spleen. HSA occurs more commonly in large breed dogs that are 8 to13 years old. HSA is a malignant tumor that may also affect the heart, skin, lungs, aorta, oral cavity, kidneys, bone, muscle, urinary tract, tongue, intestines, prostate, vagina, conjunctiva and peritoneum. The prognosis for dogs with HSA is poor, even with aggressive treatment.
Mast Cell Tumors
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Mast cell tumors usually begin on the skin and may move to the lymph nodes, spleen, liver and bone marrow. Mast cell tumors account for approximately 20 percent of all skin related tumors, and usually occur in dogs around 8 to 9 years old. Mast cell tumors within the spleen may produce symptoms such as loss of appetite, vomiting, black tarry stools, and abdominal pain.
Hematoma/Nodular Hyperplasia
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Hematomas and nodular hyperplasia are commonly found lesions within the spleen. According to the American College of Veterinary Surgeons, these account for about 20 to 41 percent of all lesions found in the spleen. These lesions are benign. Surgical removal is a successful treatment in most dogs.
Considerations
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If your dog experiences any unusual symptoms, consult a veterinarian. Early detection is key to treating lesions and masses within the spleen.
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