Numbers of desquamated epithelial cells, yeast cells and bacterial organisms were counted in samples collected from the external ear canal of 37 normal dogs and 16 normal cats, and from 24 dogs and 22 cats with otitis externa. The aims of the study were to establish quantitative reference ranges and to correlate these data with the clinical status of the dogs and cats. Numbers of yeast cells and bacterial organisms were significantly increased in dogs (P = 0.05; P = 0.0001) and cats (P = 0.0001; P = 0.0001) with otitis externa, and in most cases high counts were correlated with clinical signs. Mean Malassezia counts per high-power dry field of > or = 5 in the dog and > or = 12 in the cat were considered abnormal. Mean bacterial counts per high-power dry field of > or = 25 in the dog and > or = 15 in the cat were considered abnormal. When used to differentiate normal from inflamed external ear canals, these figures provided a low sensitivity but a specificity of > or = 95%.

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información del artículo Historia del artículo: Recibido el 4 de junio de 2012 Aceptado el 13 de septiembre de 2012 Palabras clave: Hemangioma Parótida Adultos r e s u m e nLos hemangiomas de la parótida son frecuentes en niños, representando aproximadamente el 50% de los tumores de dicha glándula durante el primer año de vida. Como contrapartida, estos tumores vasculares son extremadamente raros en pacientes adultos y solo se publican unos pocos casos aislados en la literatura, donde se mencionan las dificultades en el diagnóstico diferencial con los tumores primarios de las glándulas salivales.Presentamos un caso en una paciente adulta que consultó por una masa en la región parotídea y parálisis facial periférica con el mayor componente tumoral que se manifestaba en la cavidad oral. La ecografía mostró una masa sólida. La punción aspiración con aguja fina fue negativa con material hemático en 2 oportunidades. No tuvimos sospecha de la presencia de un tumor de origen vascular, por lo que no fue solicitada una RMN. El caso fue resuelto a través de un abordaje quirúrgico poco utilizado, tras obtener una biopsia por congelación negativa. a b s t r a c t Haemangiomas of parotid gland are frequent in children, and represent approximately 50% of tumours in this gland during the first year of life. On the other hand, these vascular tumours are extremely rare in adult patients; there are only a few isolated cases published in literature, where the difficulties in the differential diagnosis with primary tumours of the salivary glands are mentioned.We present a case in an adult patient with facial nerve palsy and a predominantly intraoral tumour. The ultrasound showed a solid mass in parotid region. The fine needle aspiration cytology (FNAC) was negative, with blood in the specimens on two occasions. As we did not suspect the diagnosis of a benign vascular tumour, an MR scan was not requested, and the case was treated by an unusual surgical approach, after a negative frozen biopsy.