RESUMEN
A wide range of pathologies may arise from the submandibular space (SMS) or submandibular gland (SMG) in children. We review herein the normal anatomy of the SMS and describe the role of imaging in the evaluation of SMS lesions. A schematic approach for the categorisation of SMS pathology based on imaging characteristics is provided.
Asunto(s)
Pediatría , Enfermedades de la Glándula Submandibular/diagnóstico , Glándula Submandibular/patología , Niño , Humanos , Imagen por Resonancia Magnética/métodos , Glándula Submandibular/anatomía & histología , Tomografía Computarizada por Rayos X/métodos , Ultrasonografía/métodosRESUMEN
Partial rhombencephalosynapsis in the presence of Chiari II malformation has been proposed as a "new abnormality of the hindbrain and spine". We describe a case of Chiari II malformation with imaging features mimicking partial rhombencephalosynapsis. Our case demonstrates how the imaging findings of Chiari II malformation can be confused with the above entity and highlights the differentiating features to help radiologists make an accurate diagnosis.
RESUMEN
Several approaches have been used by others to explore the possible involvement of endorphins in pregnancy and parturition. We employed the opioid sensitive preparation, the guinea pig ileum, to measure opioid sensitivity in three groups of adult guinea pigs: non-pregnant, near parturition, and a few weeks after parturition. Elevated normorphine EC50s occurred near the time of parturition. At 14-16 days post-partum, the EC50s for normorphine had returned to non-pregnant control levels. These data point to the activation of endorphin systems at the time of parturition.