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Carcinosarcoma is an uncommon histological type in canine in mammary gland and has a bad outcome. However, the morphology of this tumor is extremely variable. This paper aims to report two cases of carcinosarcomas with perivascular spindle cells reaction of myoepithelial origin in mammary gland of female dog. Thus, morphologic and immunohistochemical analysis were performed. The immunohistochemical analysis revealed nuclear and cytoplasmic positive expression for p63 and vimentin, respectively, in spindle cells concentric proliferating in around vessels. Thus, the myoepithelial origin should be considered in cases examined in this study. [ABSTRACT FROM AUTHOR]

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We describe the microscopic and mycological findings of a case of systemic aspergillosis disseminated in white-necked hawk (Leucopternis acernulatus) whose etiologic agent belongs to the species Aspergillus fumigatus. [ABSTRACT FROM AUTHOR]

Several surgical techniques have been proposed for perineal hernia correction in dogs and regardless of the used method the surgical risk related to clinical status and animal age should always be considered, since the involvement of the urinary tract and/or digestive tract is frequent and the geriatric patient can present multiple problems that significantly affect their tolerance to anesthesia, surgery and infections. In this context, this study aimed to evaluate the use of colopexy and deferentopexy associated with omentopexy as surgical alternative in 30 elderly dogs, systemically compromised, which had perineal hernia and concomitant rectal anomaly. The cases analysis showed that the proposed surgical technique allowed the inspection and evaluation of abdominal organs, particularly those with hernial content involved; the distal colon linear format restoration, reducing its diameter and encouraging a normal function return, effective setting and secure cranial prostate and urinary bladder repositioning, avoiding further caudal displacement; satisfactory tissue repair and defect occlusion of the pelvic diaphragm. Thus, it was concluded that the proposed procedure has therapeutic value for dogs with perineal hernia and concomitant rectal sacculation. [ABSTRACT FROM AUTHOR]