University of Arizona College of Veterinary Medicine
Canine
Cardiovascular
Heart
Infectious
Coccidioidomycosis associated restrictive pericarditis and myocarditis
Coccidioides posadosii
1
1
fungus, Coccidioides, pericarditis, myocarditis
Canine, age/sex unknown. Presented for progressive lethargy and sudden collapse.
05/05/2025
345
2
P2
Sharon M. Dial
University of Arizona College of Veterinary Medicine
Canine
skin
subcutaneous mass
neoplasia
Hibernoma, left upper palpebra
Hibernoma
1
1
Hibernoma, eyelid, brown fat
9-year-old, SF, Pit Bull mix. fine-needle aspirate of a mass over left upper palpebra, history of exophthalmos. Diagnosis confirm by IHC (Uncoupling Protein 1). Image is 40x.
05/05/2025
346
3
P3
Jeremy Bessett
University of Arizona College of Veterinary Medicine
Canine
musculoskeletal
joint
inflammmation
Primary immune-mediated polyarthritis
autoimmune arthritis
1
1
immune-mediated arthritis, polyarthritis, ragocyte, LE cell, joint fluid.
One LE cells and two ragocytes are present in the image. 4-year-old, SF Labrador cross. Presented for shifting leg lameness.
05/05/2025
347
4
P4
Jeremy Bessett
University of Arizona College of Veterinary Medicine
Equine
Respiratory
Lung
Infectious
coccidioidomycosis, lung
Coccidioides posadosii
1
1
fungus, Coccidioides, Lung, PAS stain, Periodic Acid-Schiff
Arabian horse, age and sex not provided. Image is of a well-preserved coccidioides spherule within a granuloma. Horse had a concurrent infection with Rhodococcus equi.
05/05/2025
348
5
P5
Jennifer Bouschor
University of Arizona College of Veterinary Medicine
6-year-old SF Australian Sheepdog mix with a history of a swelling on the upper medial conjunctiva. Milky white material extracted from inside the swelling. Several microfilariae are present in the image. Fine-needle aspirate of the conjunctival mass.
05/05/2025
349
6
P6
Sharon M. Dial
University of Arizona College of Veterinary Medicine
Canine
hemiclymphatic
lymph node
neoplasia
Large cell lymphoma
Lymphoma
1
1
lymphoma, multicentric lymphoma, cytology
8-year-old NM Golden Retriever. Multifocal acute lymphadenopathy, mild PU/PD, no other clinical abnormalities noted, TPR normal. Fine-needle aspirate of popliteal lymph node. 100x.
05/05/2025
350
7
P7
Sharon M. Dial
University of Arizona College of Veterinary Medicine
Canine
integument
skin
Infectious
Suppurative inflammation with intracytoplasmic bacteria
11-year-old Chihuahua presented for a acute onset raised alopecic mass ventral to the right eye. Image 100x. Both degenerate and non-degenerate neutrophils with intracytoplasmic bacteria in one degenerate neutrophil in center of image.
05/05/2025
351
8
P8
Sharon M. Dial
University of Arizona College of Veterinary Medicine
2-year-old NM Pug presenting for acute onset right vestibular signs with two seizure episodes. MRI unremarkable except for bilateral infiltrates in the bullae, right greater than left. CBC revealed significant leukocytosis. CSF (medullary cisterna: Pink, cloudy fluid; nucleated cell and RBC count: TNTC, microprotein 1,272 mg/dl. Image 100x. One neutrophil in center of image contains intracellular coccoid bacteria.
05/05/2025
352
9
P9
Sharon M. Dial
University of Arizona College of Veterinary Medicine
Canine
hemiclymphatic
lymph node
Infectious
Fungal lymphadenitis, coccidioidomycosis
Coccidioides posadosii
1
1
fungus, Coccidioides, lymph node, arthroconidia
3-year-old SF Vizsla, culture of lymph node aspirate. The image is of a lactophenol cotton blue stain of a fungal culture preparation illustrating the alternating viable and non-viable arthroconidia characteristic of Coccidioides spp in culture. 100x.
05/09/2025
353
10
P10
Sharon M. Dial
University of Arizona College of Veterinary Medicine