Oncology

Authors: Vignoli M, Terragni R, Rossi F, Frühauf L, Bacci B, Ressel L, Capitani O, Marconato L.
Journal: Vet Rad Ultrasound

Muscular metastatic neoplasia has been reported to be rare in domestic animals, however previous studies were based primarily on necropsy findings. The purpose of this retrospective study was to describe whole body computed tomography (CT) characteristics of confirmed muscular metastases in a cohort of dogs and cats presented for oncology evaluation. Medical records of 1201 oncology patients were reviewed. Included animals underwent pre and postcontrast whole body CT, and CT-guided tru-cut biopsy or fine needle aspiration of one or more metastatic lesions.

Category: Oncology
Authors: Safra N, Johnson EG, Lit L, Foreman O, Wolf ZT, Aguilar M, Karmi N, Finno CJ, Bannasch DL.
Journal: JAVMA

Objective-To evaluate clinical manifestations, response to treatment, and outcome for Weimaraners with hypertrophic osteodystrophy (HOD). Design-Retrospective case series. Animals-53 dogs. Procedures-Medical records were reviewed for signalment, vaccination history, clinical signs, laboratory test results, response to treatment, and relapses. Radiographs were reviewed. Results-Clinical signs included pyrexia, lethargy, and ostealgia; signs involving the gastrointestinal, ocular, or cutaneous systems were detected. Of the 53 dogs, 28 (52.8%) had HOD-affected littermates.

Authors: Selmic LE, Ryan SD, Ehrhart NP, Withrow SJ.
Journal: JAAHA

Bilateral synchronous appendicular bone tumors, occurring in the same bone and same anatomic site within the bone are very rare. This report describes the clinical presentation and oncologic outcome for four dogs with this rare presentation. All cases presented to the authors following a history of unilateral lameness for several weeks. On presentation, case 1 had pain elicited in the contralateral proximal humerus but all the other cases had no abnormalities detectable on physical examination of the contralateral limb.

Category: Oncology
Authors: Hanna FY.
Journal: J Feline Med Surg

Conditions affecting the brachial plexus and its branches can cause lameness and/or neurological deficits. There are few reports of schwannomas in cats. In reported cases, the tumours arose from the dermis or subcutis of the limbs, head and neck and thorax, but there are no reports of primary tumours that arose from the brachial plexus itself. The purpose of this study is to present the clinical, radiological, ultrasonographical and pathological findings of primary brachial plexus tumour in three cats.

Category: Oncology
Authors: Hodik V, Loeb E, Ranen E.
Journal: J Fel Med Surg

A 5-year-old, castrated male, domestic shorthair cat presented with firm swelling in the right temporal region of the skull. The cat's jaws were almost locked in the closed position. Radiographs showed a mass with an irregular mineralized matrix superimposed on the caudal right mandible and temporomandibular joint. Surgical exploration revealed that the mass arose from the proximal part of the vertical ramus, which was removed, with the exclusion of the temporomandibular joint. It was possible to open the cat's mouth to nearly normal extension immediately after surgery.

Category: Oncology
Authors: Sonnenschein B, Dickomeit MJ, Bali MS.
Journal: VCOT

An 18-year-old male, castrated Domestic Shorthaired cat was presented with the complaint of acute severe lameness of the left pelvic limb. There was no history of trauma, apart from a distal physeal left femoral fracture that had been repaired 17 years previously. Radiology revealed a displaced distal metaphyseal femoral fracture with marked areas of bone lysis and periosteal proliferations. A pathological fracture due to a bone neoplasia was suspected. An amputation with coxofemoral disarticulation was performed. Histopathology confirmed the tentative diagnosis of appendicular osteo-sarcoma.

Authors: Case JB, MacPhail CM, Withrow SJ.
Journal: JAAHA

Intermuscular lipomas (IML) in dogs can be associated with ominous clinical signs, especially in the thoracic limb. However, the prognosis is excellent following surgical excision. There is a paucity of information in the veterinary literature regarding IML. Our objective was to describe the anatomical location, imaging techniques, and clinical findings in a series of dogs that were diagnosed and treated for IML. The prevalence of thoracic versus pelvic limb IML was not different. Most IML of the thoracic limb were located in the axilla.

Category: Oncology
Authors: Fernandez M, Grau-Roma L, Roura X, Majó N.
Journal: JSAP

An 11-year-old male Belgian shepherd dog was evaluated for a one-week history of progressive lethargy, decreased appetite and excessive panting. On physical examination, a pedunculated mass protruding from the right side of the tongue base was observed. The mass was solid, irregular and multi-lobulated, and it measured approximately 4×2 cm. The mass was surgically excised. The histological examination was consistent with a lingual osteoma and the margins were free of neoplastic cells.

Category: Oncology
Authors: Devasconcellos P, Balla VK, Bose S, Fugazzi R, Dernell WS, Bandyopadhyay A.
Journal: VCOT

Objectives: To design, manufacture and analyze custom implants with functional gradation in macrostructure for attachment of amputation prostheses. Methods: The external shape of the implant was designed by extracting geometrical data of canine cadavers from computed tomography (CT) scans to suit the bone cavity. Three generations of implant designs were developed and were optimized with the help of fit/fill and mechanical performance of implant-cadaver bone assembly using CT analysis and compression testing, respectively.

Authors: Clarke BS, Findji L.
Journal: JAVMA

Case Description-A 10-year-old neutered male domestic shorthair cat was admitted for treatment of a mass affecting the right scapula. Clinical Findings-A firm soft tissue mass located over the craniolateral aspect of the right scapula was evident during palpation. The mass extended close to the shoulder joint but did not cause lameness of the affected limb. Treatment and Outcome-Examination of a biopsy specimen obtained from the mass ndicated chondrosarcoma. Total scapulectomy was performed to allow wide excision of the tumor.

Category: Oncology