Long-term postsurgical outcomes of mast cell tumors resected with a marginproportional to the tumor diameter in 23 dogs

摘要

We evaluated the postsurgical outcomes of cutaneous or subcutaneous mast cell tumors(MCTs, n=25) in 23 dogs, resected with lateral surgical margins proportional to the widesttumor diameter, including at least one facial plane. The tumor diameter range was 0.3–2.6cm (median: 0.9 cm), and all were histologically diagnosed as Kiupel’s low-grade MCT.Resection was histologically complete in 20, close (deep margin) in three, and incomplete(deep margin) in two. No dogs developed local recurrence at the site of initial surgeryduring follow-up of 161–2,219 days (median: 976 days). These results suggest thatresection of low-grade, relatively small MCTs with surgical margins proportional to thetumor diameter is a practical procedure with high success rates.