Vet Clin Path 2014 Flashcards
Guttural pouch lesion in a horse. Dx?
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Dx: Fungal infection with probable spore formation, and marked neutrophilic inflammation
What is your diagnosis? Guttural pouch lesion in a horse. Vet Clin Pathol 43/4 (2014) 607–608.
Cytocentrifuged preparation of cerebrospinal fluid from sheep. Dx? Describe the structures.
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Curved ellipsoid parasitic zoites (10.5–11.5 lm 9 4– 5 lm) are present in each image. They show granular basophilic cytoplasm with a clear area in one pole and an eosinophilic round nucleus in the other pole.
What is your diagnosis? Cerebrospinal fluid from a dog. Vet Clin Pathol 43/3 (2014) 467–468.
Histologic section of an intraocular mass from a dog. Dx? Describe. What is the stain in the bottom picture?
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Dx: Iridociliary adenoma or ciliary body adenoma
Note the papillary pattern and the thick periodic acid Schiff positive basement membrane. (A) H&E (B) Periodic acid Schiff
What is your diagnosis? An intraocular mass in a dog. Vet Clin Pathol 43/2 (2014) 289–290.
Canine blood smear. Describe the changes.
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Many of the platelets contain single to multiple, variably sized cytoplasmic vacuoles.
Platelet vacuoles in a dog with severe nonregenerative anemia: evidence of platelet autophagy
Adrenal tumor in a cat. Dx?
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Dx: Aldosteronoma
Accuracy of cytology in distinguishing adrenocortical tumors from pheochromocytoma in companion animals. Vet Clin Pathol 43/3 (2014) 453–459.
Lesional skin biopsy from an African hedgehog with epitheliotropic T-cell lymphoma. What was it positive for?
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CD3
Multicentric epitheliotropic T-cell lymphoma in an African hedgehog ( Atelerix albiventris ). Vet Clin Pathol 43/4 (2014) 601–604.
Histo of a pancreas in a dog. Describe. Dx?
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Dx: bone within an islet cell carcinoma in the pancreas of a dog.
Monomorphic polygonal cells are interspersed by delicate fibrovascular stroma, typical of neuroendocrine packeting. Cells have moderate amounts of finely granular eosinophilic cytoplasm, basilar or centrally located round nuclei, clumped chromatin, and a single prominent nucleolus. Interspersed amongst the neoplastic cells are broad and irregularly arranged, anastomosing trabeculae of mineralized compact bone containing loosely set osteoblasts within lacunae.
Osseous metaplasia within a canine insulinoma. Vet Clin Pathol 43/1 (2014) 89–93.
Pancreatic mass in a dog. Dx? What is the special stain?
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Dx: islet cell carcinoma in a dog.
Strong positive staining for insulin within neoplastic cells, consistent with a diagnosis of insulinoma.
Osseous metaplasia within a canine insulinoma. Vet Clin Pathol 43/1 (2014) 89–93.
Cytocentrifuged preparation of cerebrospinal fluid from sheep. Dx?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/187/722/662/q_image_thumb.png?1462075482)
Dx: presence of zoites compatible with Sarcocystis sp
What is your diagnosis? Cerebrospinal fluid from a dog. Vet Clin Pathol 43/3 (2014) 467–468.
Histologic section of a dermal mass in a dog. Dx? Describe.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/187/722/826/q_image_thumb.png?1462075702)
Dx: trabecular type trichoblastoma
The mass was predominantly comprised of spindled keratinocytes with elongated nuclei. Areas of peripheral palisading (arrows) help characterize this tumor as a trabecular type trichoblastoma.
What is your diagnosis? Dermal mass in a dog. Vet Clin Pathol 43/2 (2014) 285–286.
Smear of a plaque from a guttural pouch of a horse. Dx? What is the stain?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/187/722/974/q_image_thumb.png?1462076194)
Methanolic Wright’s stain. Fungal infection with probable spore formation, and marked neutrophilic inflammation
What is your diagnosis? Guttural pouch lesion in a horse. Vet Clin Pathol 43/4 (2014) 607–608.
Histologic skin section from lesional skin in an African hedgehog. Dx? Describe.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/187/721/602/q_image_thumb.png?1462075339)
Dx: epitheliotropic T-cell lymphoma.
(A) There are neoplastic lymphocytes arranged in large clusters in the epidermis
(B) The follicular epithelium is markedly distorted by large aggregates of neoplastic lymphocytes
(C) Sheets of neoplastic lymphocytes are present within the dermis and infiltrating the epithelium of the adjacent hair follicle (arrow)
Multicentric epitheliotropic T-cell lymphoma in an African hedgehog ( Atelerix albiventris ). Vet Clin Pathol 43/4 (2014) 601–604.
Cytologic images of strap-like cell from a rhabdomyosarcoma located around the lead wire of a pacemaker in a dog. Dx?
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Rhabdomyosarcoma
Rhabdomyosarcoma associated with the lead wire of a pacemaker generator implant. Vet Clin Pathol 43/2 (2014) 276–280.
Mass in the tendon sheath of a dog. Dx? Describe.
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Dx: benign giant cell tumor of the tendon sheath (GCTTS)
Cytologically, plump spindle cells exhibiting mild-to- moderate pleomorphism and large multinucleated cells with similar staining characteristics are arranged individually with round, uniform nuclei that are often arranged in botryose or rosette-like formations in the multi- nucleated cells. Cells from both populations have a moderate amount of pink product within their cytoplasm and are found amongst a considerable amount of pink, extracellular matrix or product.
Cytologic findings from a benign giant cell tumor of the tendon sheath in a dog. Vet Clin Pathol 43/2 (2014) 270–275.
Blood smear from a cat. Dx?
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Dx: left shift with bacteremia
What is your diagnosis? Blood smear from a cat. Vet Clin Pathol 43/3 (2014) 465–466.
Adrenal tumor in a dog. Where in the adrenal is this from? Describe.
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Cortex.
Cells show a low nuclear to cytoplasmic ratio, a large amount of basophilic cytoplasm that may contain small empty vacuoles, and uniform round to oval central to peripheral nuclei with coarse chromatin.
Accuracy of cytology in distinguishing adrenocortical tumors from pheochromocytoma in companion animals. Vet Clin Pathol 43/3 (2014) 453–459.
Bone marrow smear from a dog with a small mammary mass and disseminated intravascular coagulation. Dx?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/187/725/634/q_image_thumb.png?1462079343)
Circulating and metastatic carcinomatous cells in BM.
What is your diagnosis? Abnormal cells on a blood smear from a dog. Vet Clin Pathol 43/3 (2014) 461–462.