ANGLER

5/13 MEDICAL FINAL ADOPTION / RESCUE REQUIRED BY 5/23Animal: Angler, approx 3-year-old neutered male Pit Bull-type dogReason for Medical Final:Angler was diagnosed with a cutaneous mast cell tumor (MCT), Grade II (low grade) following surgical removal. While this is considered a lower-grade tumor, there are significant concerning features that increase the risk for recurrence and spread.Diagnostic Summary / Interpretation:Margins: Pending; however, surgeon reports high suspicion for incomplete margins due to invasive appearanceVascular/Lymphatic Invasion: Present (mast cells identified within lymphatic vessels)Pathology Notes:Mast cell tumors are among the most common skin tumors in dogs and can vary widely in behavior. Although Angler’s tumor is classified as low grade, the presence of vascular/lymphatic invasion and likely incomplete margins significantly increases concern for:Local recurrence at the surgical siteDevelopment of new mast cell tumors elsewherePotential for metastasisCurrent Treatment:Famotidine 20 mg PO BID x 14 daysDiphenhydramine 50 mg PO BID x 14 daysPrognosis is guarded due to:Suspected incomplete excisionEvidence of vascular invasionStrongly recommended follow-up with a primary veterinarian and/or veterinary oncologist for:Margin addendum review ADDENDUM; 5/13/2026 2:18 PMUPDATED MARGIN ASSESSMENT:Histologic tumor-free margins: Equivocal; the nearest peripheral margin is 8 mm, with neoplastic cells bordering on the deep margin (i.e. less than 0.1 mm)Discussion of additional treatment options, which may include:Surgical revision (re-excision)Radiation therapyChemotherapy or adjunctive therapiesRoutine monitoring for recurrence or new massesNeeds placement with adopter or rescue by 5/23