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Case Study

Rare case of ocular onchocerciasis in a dog from south Texas

January 25, 2023 by Mallory Pfeifer

Gray and white American Pit Bull Terrier wearing collar and blue tag

Rare case of ocular onchocerciasis in a dog from south Texas Erin Edwards, DVM, MS, DACVP and Mindy Borst, LVT A formalin-fixed globe from an 11-year-old, castrated male, Pitbull dog was submitted to the Texas A&M Veterinary Medical Diagnostic … [Read more...] about Rare case of ocular onchocerciasis in a dog from south Texas

Filed Under: Case Study Tagged With: biopsy, canine, clinical pathology, dog, histopathology, pathology, pitbull

Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds

September 13, 2022 by Mallory Pfeifer

Closeup of wild emu on south coast of Australia

Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds Martin Ficken, DVM, PhD, ACPV Nematodes of the genus Baylisascaris are recognized as causes of avian cerebral nematodiasis. Baylisascaris columnaris, the ascarid of skunks and … [Read more...] about Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds

Filed Under: Case Study Tagged With: Avian, birds, chickens, parasitology, pathology, poultry

Spironucleosis (Hexamitiasis) in Quail

August 9, 2022 by Mallory Pfeifer

Spironucleosis (Hexamitiasis) in Quail Martin Ficken, DVM, PhD, ACPV A flock of approximately 10,000 Coturnix quail, aged 5.5 months, were experiencing mild diarrhea and various vague neurological symptoms resulting in a spike in mortality over … [Read more...] about Spironucleosis (Hexamitiasis) in Quail

Filed Under: Case Study Tagged With: anatomic pathology, Avian, histopathology, necropsy, pathology, Quail

Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes

August 9, 2022 by Mallory Pfeifer

A whitetail buck stands at alert in an open meadow on a foggy morning in Tennessee

Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes Erin Edwards, DVM, MS, DACVP A 1.5-year-old, captive, white-tailed deer buck was submitted to TVMDL for necropsy. The animal had a prolonged history of illness for at least 4 … [Read more...] about Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes

Filed Under: Case Study Tagged With: anatomic pathology, cervid, deer, histopathology, pathology, white tailed deer

Pinkeye in cattle

June 6, 2022 by Mallory Pfeifer

Close up of cow head and eye

Pinkeye in cattle Guy Sheppard, DVM Infectious Bovine Keratoconjunctivitis (IBK) or pinkeye can be very problematic at times in cattle herds. It is manifested as an inflammation/infection of the cornea and conjunctiva of one or both eyes in … [Read more...] about Pinkeye in cattle

Filed Under: Case Study Tagged With: bovine, canyon, cattle, college station, cows, diagnostics, pinkeye

Equine asthma diagnosed with BAL Cytology

June 6, 2022 by Mallory Pfeifer

Portrait of a Palomino horse on black background.

Equine asthma diagnosed with BAL Cytology Julie Piccione, DVM, MS, DACVP and Judith Akins, DVM, MS A 23-year-old American Quarter Horse mare was presented to a veterinarian for chronic coughing and exercise intolerance. On physical examination, … [Read more...] about Equine asthma diagnosed with BAL Cytology

Filed Under: Case Study Tagged With: clinical pathology, college station, equine, horse, quarter horse

Possible chocolate poisoning in a dog

February 24, 2022 by smorris

brown dog with pointy ears walking in snow

Possible chocolate poisoning in a dog Travis Mays, MS, PhD The TVMDL received a full set of fresh and fixed tissue samples and stomach content from a four-year-old Belgian Tervuren for testing. The dog appeared normal in the morning, running … [Read more...] about Possible chocolate poisoning in a dog

Filed Under: Case Study Tagged With: analytical chemistry, canine, toxicology

Feline post-traumatic sarcoma

February 18, 2022 by smorris

Gray cat swatting at mosquito in green grass

Feline post-traumatic sarcoma Morgan Matthews, DVM, DACVP An entire globe from an 8-year-old cat was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). The patient had a history of bilateral glaucoma, but the left … [Read more...] about Feline post-traumatic sarcoma

Filed Under: Case Study Tagged With: feline, histopathology, pathology

Carcinomatosis in laying chickens

January 31, 2022 by Mallory Pfeifer

A closeup shot of a large plymouth rock chicken at a farm

Carcinomatosis in laying chickens Martin Ficken, DVM, PhD, ACVP  A female Gray Barred chicken was presented to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Gonzales. The chicken was approximately 2 years old and weighed … [Read more...] about Carcinomatosis in laying chickens

Filed Under: Case Study Tagged With: Avian, chicken, histopathology, necropsy, pathology, poultry

Listeriosis in a goat doe

January 3, 2022 by Mallory Pfeifer

A group of white and brown goats graze in a green pasture

Listeriosis in a goat doe Guy Sheppard DVM, Jessie Monday DVM, MS, Laura Rice DVM, MS, DACVP Samples from a one-year-old Boer goat doe were received at the TVMDL for testing.  The doe had displayed neurological signs including unilateral paresis, … [Read more...] about Listeriosis in a goat doe

Filed Under: Case Study Tagged With: anatomic pathology, caprine, college station, goat, histopathology, pathology, TVMDL

Polio Syndrome in Ruminants

November 1, 2021 by Mallory Pfeifer

Brown, white and black goat eating green grass

Polio Syndrome in Ruminants Guy Sheppard, DVM Polioencephalomalacia “Polio” is a syndrome of ruminant animals affecting the central nervous system. Seizures are the most notable sign, progressing quickly to the death of the affected animal … [Read more...] about Polio Syndrome in Ruminants

Filed Under: Case Study Tagged With: bovine, cattle, college station, ruminants, TVMDL, vitamins

Detection of Neospora caninum DNA in a mummified bovine fetus

November 1, 2021 by Mallory Pfeifer

brown and white cows standing in green grass

Detection of Neospora caninum DNA in a mummified bovine fetus Andrés de la Concha-Bermejillo, DVM, MS, PhD, Pam Ferro, PhD, Megan Schroeder, PhD The body of a midterm bovine fetus and the attached placenta were submitted to the Texas A&M … [Read more...] about Detection of Neospora caninum DNA in a mummified bovine fetus

Filed Under: Case Study Tagged With: anatomic pathology, bovine, cattle, college station, histopathology, Molecular Diagnostics, pathology

Systemic Besnoitiosis in a Virginia Opossum

September 7, 2021 by Mallory Pfeifer

Adult male Virginia opossum (Didelphis virginiana) or common opossum looks sideways and opens his mouth. The teeth are visible. Isolated on white background

Systemic Besnoitiosis in a Virginia Opossum Erin Edwards, DVM, MS, DACVP Besnoitia spp. are protozoal parasites that form tissue cysts in intermediate hosts. Besnoitiosis caused by B. darlinigi is well described in Virginia opossums (Didelphis … [Read more...] about Systemic Besnoitiosis in a Virginia Opossum

Filed Under: Case Study Tagged With: anatomic pathology, histopathology, native, opossum, pathology, TVMDL

Osteogenesis and dentinogenesis imperfecta in a calf

September 7, 2021 by Mallory Pfeifer

Black calf getting licked by mother in green field

Osteogenesis and Dentinogenesis Imperfecta in a Calf Randi Gold VMD, PhD, DACVP and Guy Sheppard DVM A 21 day-old calf with a history of multiple leg fractures and no evidence of external injuries was euthanized and sent into the TVMDL for … [Read more...] about Osteogenesis and dentinogenesis imperfecta in a calf

Filed Under: Case Study Tagged With: anatomic pathology, bovine, calf, cattle, histopathology, pathology, TVMDL

Analytical chemistry research testing capabilities

August 6, 2021 by Mallory Pfeifer

laboratory beakers with a scientist in white coat in the background

Analytical chemistry research testing capabilities Travis Mays, MS, PhD The analytical chemistry section at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is equipped with instrumentation, including eight mass spectrometers, … [Read more...] about Analytical chemistry research testing capabilities

Filed Under: Case Study Tagged With: analytical chemistry, chemistry, college station, drug testing, TVMDL

Listeriosis in Cattle

August 6, 2021 by Mallory Pfeifer

Line of crossbred calves

Listeriosis in Cattle Guy Sheppard, DVM Since last summer, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has seen a few cases of listeriosis in cattle. Submitting veterinarians have reported profound neurological signs that … [Read more...] about Listeriosis in Cattle

Filed Under: Case Study Tagged With: bovine, canyon, cattle, college station, diagnostic testing, TVMDL

The role of diagnostic testing in establishing bovine vaccination programs

July 5, 2021 by Mallory Pfeifer

Young male cowboy sitting on gray horse in the middle of pen full of cows and calves

The role of diagnostic testing in establishing bovine vaccination programs Guy Sheppard, DVM Vaccination programs are integral to the overall health and profitability of a cattle operation. Without vaccinations, diseases such as Bovine … [Read more...] about The role of diagnostic testing in establishing bovine vaccination programs

Filed Under: Case Study Tagged With: bovine, cattle, diagnosticians, diagnostics, health, TVMDL, vaccination

Cutaneous Pythiosis in a German Shepherd Dog

July 5, 2021 by Mallory Pfeifer

German Shepherd dog laying in green grass

Cutaneous Pythiosis in a German Shepherd Dog Cheryl Maguire, DVM, Dominique Wiener, DVM, PhD, DECVP, Sonia Lingsweiler, BS, MS The bacteriology section at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) received a skin swab for … [Read more...] about Cutaneous Pythiosis in a German Shepherd Dog

Filed Under: Case Study Tagged With: bacteriology, canine, dog, TVMDL

A tale of a tail tumor: Ferret chordoma

June 21, 2021 by Mallory Pfeifer

young ferret isolated over white background

A tale of a tail tumor: Ferret chordoma Erin Edwards, DVM, MS, DACVP Chordomas are among the most common diagnoses in ferret biopsy samples submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). This article highlights a … [Read more...] about A tale of a tail tumor: Ferret chordoma

Filed Under: Case Study Tagged With: ferret, histopathology, necropsy, pathology, TVMDL

Strychnine detected in a puppy

June 21, 2021 by Mallory Pfeifer

Strychnine detected in a puppy Travis Mays, MS, DVM The Texas A&M Veterinary Medical Diagnostic Laboratory received stomach content, fresh kidney, and serum from a two-month old mixed breed puppy for testing. The owner found the puppy … [Read more...] about Strychnine detected in a puppy

Filed Under: Case Study Tagged With: analytical chemistry, canine, dog, toxicology, TVMDL

Polytetrafluoroethylene Toxicosis (TeflonTM Toxicity)

May 5, 2021 by Mallory Pfeifer

Woman pouring cooking oil from bottle into frying pan, closeup

Polytetrafluoroethylene Toxicosis (TeflonTM Toxicity) Martin Ficken, DVM, PhD, ACPV The non-stick coating polytetrafluoroethylene (TeflonTM) on cookware, light bulbs, and ovens releases fluorinated gases upon overheating. This is particularly … [Read more...] about Polytetrafluoroethylene Toxicosis (TeflonTM Toxicity)

Filed Under: Case Study Tagged With: Avian, bird, chicken, histopathology, necropsy, pathology, poultry, toxic, toxicity

Fungal Equine Endometritis

May 5, 2021 by Mallory Pfeifer

Eye of red horse closeup

Fungal Equine Endometritis Judith Akins, DVM, MS Vaginal/uterine discharge was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station from an eight-year-old Warmblood mare for culture and a cytologic … [Read more...] about Fungal Equine Endometritis

Filed Under: Case Study Tagged With: clinical pathology, equine, horse, pathology

Hepatocytoptropic lymphoma in a Great Dane

April 19, 2021 by Mallory Pfeifer

Studio shot of a gray Great Dane dog lying on white background.

Hepatocytoptropic lymphoma in a Great Dane Morgan Matthews, DVM Tissues from a 3-year-old, castrated male Great Dane were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). On histopathology, the liver, spleen, and … [Read more...] about Hepatocytoptropic lymphoma in a Great Dane

Filed Under: Case Study Tagged With: anatomic pathology, canine, canyon, dog, Great Dane, histopathology, necropsy, pathology, TVMDL

Enterotoxemia in sheep and goats

April 19, 2021 by Mallory Pfeifer

Feedlot lambs after a rain in the straw and mud

Enterotoxemia in Sheep and Goats Guy Sheppard DVM and Randi Gold VMD, PhD, DACVP Enterotoxemia, commonly called “overeating disease”, is a common problem in sheep and goats, especially in animals under a year of age. The disease occurs in … [Read more...] about Enterotoxemia in sheep and goats

Filed Under: Case Study Tagged With: anatomic pathology, caprine, goat, histopathology, necropsy, ovine, pathology, sheep

Fatal Heartworm Disease and Caval Syndrome in a Ferret

April 12, 2021 by Mallory Pfeifer

Gray and black ferret standing in green grass

Fatal Heartworm Disease and Caval Syndrome in a Ferret Julie Anna Prusak and Erin Edwards, DVM, MS, DACVP A 3-year-old, pet, domestic ferret (Mustela putorius furo) was found dead suddenly and was sent to the Texas A&M Veterinary Medical … [Read more...] about Fatal Heartworm Disease and Caval Syndrome in a Ferret

Filed Under: Case Study Tagged With: anatomic pathology, college station, ferret, histopathology, necropsy, pathology, pocket pets, TVMDL

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Latest Case Studies

  • Rare case of ocular onchocerciasis in a dog from south Texas

    January 25, 2023

  • Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds

    September 13, 2022

  • Spironucleosis (Hexamitiasis) in Quail

    August 9, 2022

  • Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes

    August 9, 2022

  • Pinkeye in cattle

    June 6, 2022

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