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History

An 11-year-old 5.4-kg (11.9-lb) castrated male Maltese mixed-breed dog was referred for evaluation of right forelimb lameness. The owner reported an acute onset of clinical signs with a 5-day history of progressive, non–weight-bearing right forelimb lameness that coincided with anorexia that started at the same time. The referring veterinarian had localized signs of pain to the dog's right shoulder joint but detected no clinically relevant radiographic abnormalities. Hematologic evaluation performed by the referring veterinarian revealed a mild regenerative anemia and thrombocytopenia. The dog had a history of right anal sac adenocarcinoma, which was surgically removed along with a sublumbar

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in Journal of the American Veterinary Medical Association
History

A 9-month-old 10.9-kg (24-lb) spayed female mixed-breed dog was evaluated because of a 2-month history of a hard swelling dorsal to the left frontal bone, a several-day history of lethargy, fever (40.1°C [104.2°F]), and generalized signs of pain. The patient was prescribed an NSAID and antimicrobials with no resolution of the swelling.

Seven weeks later, the patient was referred to the Iowa State University Lloyd Veterinary Medical Center for further evaluation. No abnormalities were found on physical examination, with the exception of a 2 × 4-cm hard swelling dorsal to the left orbit.

Results of a CBC and urinalysis

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in Journal of the American Veterinary Medical Association
History

An 8-year-old 3.75-kg (8.25-lb) spayed female domestic shorthair cat was referred for evaluation because of a suspected pulmonary mass observed on whole body radiographs. The patient was initially evaluated by the referring veterinarian because of weight loss of 2 months’ duration. No abnormalities were found on hematologic evaluation, serum biochemical analysis, or urinalysis. Serologic results of FeLV antibody and FIV antigen testing were negative.

On referral physical examination, the patient was quiet and alert and had a body condition score of 2 of 9 with generalized muscle wasting. Mild tachypnea was evident (respiratory rate, 62 breaths/min). The respiratory character

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in Journal of the American Veterinary Medical Association

Abstract

OBJECTIVE

To describe the radiographic appearance of benign bone infarcts and bone infarcts associated with neoplasia in dogs and determine the utility of radiography in differentiating benign and malignancy-associated bone infarcts.

SAMPLE

49 dogs with benign (n = 33) or malignancy-associated (16) infarcts involving the appendicular skeleton.

PROCEDURES

A retrospective cohort study was performed by searching a referral osteopathology database for cases involving dogs with a histologic diagnosis of bone infarction. Case radiographs were anonymized and reviewed by 2 board-certified veterinary radiologists blinded to the histologic classification. Radiographic features commonly used to differentiate aggressive from nonaggressive osseous lesions were recorded, and reviewers classified each case as likely benign infarct, likely malignancy-associated infarct, or undistinguishable.

RESULTS

Only 16 (48%) of the benign infarcts and 6 (38%) of the malignancy-associated infarcts were correctly classified by both reviewers. Medullary lysis pattern and periosteal proliferation pattern were significantly associated with histologic classification. Although all 16 (100%) malignancy-associated lesions had aggressive medullary lysis, 23 of the 33 (70%) benign lesions also did. Eight of the 16 (50%) malignancy-associated infarcts had aggressive periosteal proliferation, compared with 7 of the 33 (21%) benign infarcts.

CONCLUSIONS AND CLINICAL RELEVANCE

Results suggested that radiography was not particularly helpful in distinguishing benign from malignancy-associated bone infarcts in dogs.

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in Journal of the American Veterinary Medical Association

Abstract

OBJECTIVE

To determine the effectiveness of a digital interactive multimedia tutorial (DIMT) for preparing veterinary students to perform ultrasonography in horses.

SAMPLE

42 third-year veterinary students.

PROCEDURES

Students were randomly assigned to 3 instructional methods: independent study (ie, 45 minutes to read a highlighted textbook chapter), lecture (ie, 45-minute lecture by a faculty member), or digital interactive multimedia tutorial (DIMT; ie, 45-minute narrated, interactive module). Written and practical tests were administered after each instruction session. For the practical test, each student was required to obtain a series of ultrasound images of a live horse, and images were later scored for quality by an individual unaware of the instructional method used.

RESULTS

Higher-quality ultrasound images were obtained by veterinary students who had reviewed the DIMT rather than the analogous information in textbook chapters. No difference in scores was identified between students in the lecture group and those in the DIMT group. Students’ perceptions suggested that practical instruction facilitated by clinicians was a key component of learning how to perform ultrasonography in horses.

CONCLUSIONS AND CLINICAL RELEVANCE

Results supported the use of DIMTs in preparing veterinary students to perform ultrasonography in horses.

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in Journal of the American Veterinary Medical Association