Multiple nodules (slightly polypoid) protruding from nasal mucosa of a dog. The nodules are only slightly darker pink than the more normal mucosa.
Large, perhaps 200-micrometer-diameter, spherical organisns with a trilaminar wall and multiple smaller structures inside. It lies in the submucosa of the nose and is surrounded by macrophages, lymphocytes and plasma cells.
Spherical organisms of variable diameter but typically very large, with a thick capsule and grainy contents. These structures have thick walls, but only the largest has a trilaminar wall. The organisms are in the submucosa of the nose and are surrounded by macrophages, lymphocytes and plasma cells. Some macrophages contain hemosiderin.
Large spherical organisms of variable diameter with a thick capsule and granular contents. Some have a nucleus visible in the center. The largest is partially collapsed and has a trilaminar wall. The walls of smaller (developing) organisms only have one layer.
Here is a bipartisan #pathology case. It's relevent to DVMs and MDs. Lots of red (at least pink) and blue, too.
Rhinoscopy and nasal biopsy from a dog. What’s your diagnosis? It's a classic.
#vetpath #pathsky #Mesomycetozoea #pathology #respiratorypathology #endoscopy #rhinoscopy