A case with two simultaneous dens invaginations (DIs) and one dens evagination (DE) in a permanent maxillary lateral incisor is reported for the first time in a 21-year-old girl. DE known as talon cusp of the anterior teeth is a rare entity and its co-existence with DI has been reported scarcely in the literature. Simultaneous occurrence of two DIs with one DE has not been reported elsewhere. U...

Talon cusp is a dental anomaly also known as an eagle's talon. It is an extra cusp on an anterior tooth which arises as a result of evagination on the surface of a crown before calcification has occurred. The exact etiology is unknown. The inci-dence of talon cusp is less than 6%. Commonly involved teeth are maxillary incisors, usually unilateral but in some instanc-es bilateral. The classical ...

*Address correspondence to: Sergio Regodón. Departments of Embryology and Histology, Faculty of Veterinary Medicine, University of Extremadura, 10071 Cáceres, Spain. e-mail: [email protected] The pineal originates as an outgrowth of the roof of the diencephalon in all vertebrate species. This evagination arises between the habenular commissure anteriorly (or rostrally) and the posterior commissure...

Stent thrombosis (ST) remains a major concern due to high morbidity and mortality in both the short and long term. Although the rates of this complication have been reduced with newer generation drug-eluting stents (DES), the risk of ST continues to persist for all DES and was recently also reported in bioresorbable vascular scaffolds (BVS). – 4 Among the suggested causes of ST are incomplete n...

A 41-year-old man with systemic lupus erythematosus (SLE) who developed pelvic inflammation due to perforation of a giant rectal ulcer is described. The patient presented with persistent diarrhea, abdominal pain and fever without development of disease activity of SLE. Endoscopic and radiological examinations revealed a perforated giant ulcer on the posterior wall at the rectum below the perito...

Paranasal sinuses are paired cavities within the skull, which develop by evagination into spongy bone between external and internal plates of cranial facial bones. Thus, each sinus is lined respiratory epithelium has direct or indirect communication to nasal cavity. The purpose this chapter present an anatomical reference guide paranasal in domestic animals, including large small ruminants (cat...

Electron microscopic examination of the bases of adult rod and cone outer segments (rhesus monkey, ground squirrel, and grey squirrel) has led to a new model of disc morphogenesis. In this model the disc surfaces and disc rims develop by separate mechanisms and from separate regions of the membrane of the inner face of the cilium. This membrane is alternately specified into regions that will fo...