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histopathology

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

Forensic pathology/legal necropsy examinations

September 26, 2022 by Mallory Pfeifer

Crime scene with yellow signs.

A forensic or legal necropsy as defined by the purposes of the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is a necropsy done to attempt to determine the cause of death in cases where the death is known or suspected to be … [Read more...] about Forensic pathology/legal necropsy examinations

Filed Under: News Tagged With: anatomic pathology, canyon, college station, forensics, histopathology, legal, pathology

TVMDL professionals co-author publication covering concurrent canine distemper and Tyzzer disease infection

September 21, 2022 by Mallory Pfeifer

Wild Baby Gray Fox Sitting on Ground Looking at Camera

Two professionals from the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) were among a team of authors who recently published an article in the Journal of Veterinary Diagnostic Investigation. In the article, Pam Ferro, PhD, molecular … [Read more...] about TVMDL professionals co-author publication covering concurrent canine distemper and Tyzzer disease infection

Filed Under: News, Research & Publications Tagged With: bacteria, canine, fox, histopathology, Molecular Diagnostics, pathology, publication, wildlife

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

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

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

Texas A&M Veterinary Medical Diagnostic Laboratory wraps up surge testing for Chronic Wasting Disease (CWD)

October 21, 2021 by Mallory Pfeifer

The Texas A&M Veterinary Medical Diagnostic Laboratory, TVMDL, recently accomplished a testing milestone in the ongoing battle to curb the deadly disease in white tailed deer known as Chronic Wasting Disease, or CWD. In June of 2021,  a … [Read more...] about Texas A&M Veterinary Medical Diagnostic Laboratory wraps up surge testing for Chronic Wasting Disease (CWD)

Filed Under: News Tagged With: cervid, chronic wasting disease, CWD, deer, histopathology, 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

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

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

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

Edwards contributes to literature over Chagas disease in government working dogs

April 6, 2021 by Mallory Pfeifer

Brown dog sitting on concrete on leash held my male place officer

TVMDL Anatomic Pathology Assistant Section Head Erin Edwards, DVM, MS, DACVP  recently co-authored a publication on Chagas disease in government working dogs. This article, titled “Fatal Chagas myocarditis in government working dogs in the southern … [Read more...] about Edwards contributes to literature over Chagas disease in government working dogs

Filed Under: News, Research & Publications Tagged With: anatomic pathology, canine, Chagas, dogs, histopathology, pathology

Diagnostic Guidance: Skin Biopsy Best Practices

March 8, 2021 by Mallory Pfeifer

Hands in blue gloves prepare tissues under light

Diagnostic Guidance: Skin Biopsy Best Practices Will Sims, DVM, MS Dermatology cases are one of the most common types of cases seen by general practitioners. A crucial diagnostic tool in these cases is the skin biopsy. They are indicated … [Read more...] about Diagnostic Guidance: Skin Biopsy Best Practices

Filed Under: DX Guidance, News Tagged With: biopsy, dermatology, histopathology, pathology, TVMDL

Calcinosis circumscripta in a surgical amputation site

January 25, 2021 by Mallory Pfeifer

mixed breed dog in front of a white background

Calcinosis circumscripta in a surgical amputation site Randi Gold, VMD, PhD, DACVP A one-year-old, female-spayed, mix breed dog required a mid-shaft, hind leg amputation after a femoral fracture. Following the amputation, the owner and … [Read more...] about Calcinosis circumscripta in a surgical amputation site

Filed Under: Case Study Tagged With: anatomic pathology, canine, college station, dog, histopathology, pathology, TVMDL

Cryptosporidiosis in cattle

January 18, 2021 by Mallory Pfeifer

Black calf in green pasture with one ear sticking up

Cryptosporidiosis in cattle Guy Sheppard, DVM and Gabriel Gomez, DVM, PhD, DACVP A seven-day-old angus bull calf with a history of diarrhea was necropsied by the submitting veterinarian. The small intestine, liver, kidney and the lymph node were … [Read more...] about Cryptosporidiosis in cattle

Filed Under: Case Study Tagged With: bovine, cattle, cow, crytpo, histopathology, necropsy, pathology

Hyperestrogenism Syndrome in a Dog with a Sertoli Cell Tumor

November 30, 2020 by Mallory Pfeifer

young jack russell terrier dog standing outdoors

Hyperestrogenism Syndrome in a Dog with a Sertoli Cell Tumor Erin Edwards, DVM, MS, DACVP Sertoli cell tumors are unique testicular tumors that are known for their ability to cause feminization of male dogs. These tumors are commonly diagnosed … [Read more...] about Hyperestrogenism Syndrome in a Dog with a Sertoli Cell Tumor

Filed Under: Case Study Tagged With: canine, college station, dog, histopathology, pathology, TVMDL

Cryptosporidium in a Gerenuk

November 2, 2020 by Mallory Pfeifer

Gerenuk standing with head turned to camera

Cryptosporidium in a Gerenuk By Will Sims, DVM, MS Tissues from a 5-month-old gerenuk, also known as a giraffe gazelle, were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Canyon for evaluation. The calf had a … [Read more...] about Cryptosporidium in a Gerenuk

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

Aspergillosis in a Pacific Eider

October 19, 2020 by Mallory Pfeifer

Brown and Black sea duck standing on rock

Aspergillosis in a Pacific Eider Erin Edwards, DVM, MS, DACVP and Narayan Paul, DVM, MS, PhD A four-year-old Pacific eider (sea duck) was reported to have a history of open-mouth breathing. It had been treated for suspected aspergillosis prior to … [Read more...] about Aspergillosis in a Pacific Eider

Filed Under: Case Study Tagged With: Avian, bacteriology, duck, histopathology, pathology

Bovine thrombotic meningoncephalitis

September 14, 2020 by Mallory Pfeifer

Angus cows and calves standing in green grass with blue sky

Bovine thrombotic meningoncephalitis Guy Sheppard, DVM and Andrés de la Concha-Bermejilla, DVM, MS, PhD Bovine thrombotic meningoencephalitis (TEM), formerly known as thromboembolic meningoencephalitis (TEME), is a neurological disease, primarily … [Read more...] about Bovine thrombotic meningoncephalitis

Filed Under: Case Study Tagged With: bovine, cattle, college station, cow, histopathology, pathology, TVMDL

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Latest News

  • Rare case of ocular onchocerciasis in a dog from south Texas January 25, 2023
  • Dimitrov contributes to literature over avian paramyxoviruses January 24, 2023
  • *Update 1/24 Canyon lab will be closed* January 23, 2023
  • Two professionals recognized with Texas A&M AgriLife Vice Chancellor’s Awards in Excellence January 19, 2023
  • Lemburg honored with Vice Chancellor Award in Excellence January 19, 2023
  • Five employees honored with Director’s Excellence Awards January 19, 2023

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