Introduction
   

Case 6:

History:

Multiple irregular masses in the mammary chain of a mixed breed bitch aged 7 years
Firm knobby irregular swelling of the left inguinal lymph node.

Gross pathology:

Excisional biopsy of one mass showed variably sized small cystic areas mixed with dense tan to white fibrous areas in the mass.

 

Non encapsulated irregular epithelial neoplastic mass, with areas of inflammation. The shaded area shows normal adjacent mammary tissue for comparison.

 

Enlarged hyperchromatic epithelial cells with nuclear pleomorphism, but a low mitotic rate. Cells are arranged in papillary and acinar patterns. Based on these features alone, it would be difficult to assess biologic behaviour (benign or malignant)

 

Cases
Review Questions
Back to Prac Classes