'Simultaneous technique' and a hybrid Microseal/PacMac obturation.

Unlabelled: In these endodontic case reports we present a root canal preparation protocol using the Mtwo Ni-Ti rotary files according to the 'simultaneous technique' which is a'crown-down' approach, where every instrument in the sequence is used to the full working length. A hybrid Microseal/PacMac obturation (consisting of three stages: master cone compaction, backfill with pre-plasticized guttapercha and vertical compaction) is proposed in order to: maintain the obturation length control associated with the Microseal system; use preheated gutta-percha to backfill the canal rapidly with the PacMac condensor; and to reduce potential voids in the obturation material with the final vertical compaction.

Clinical Relevance: The'simultaneous technique'followed by apical preparation using Mtwo apical files allows obturation using the proposed hybrid Microseal/Pacmac method, aiming to overcome some of the shortcomings of the Microseal and Pacmac obturation methods, such as length control difficulty and sealer pooling.

[A gastric polypoid signet ring cell carcinoma].

Aim: The authors signal a case of gastric polypoid signet ring cell carcinoma, of particular interest for its rarity like show from the review of the literature, which is the first to have been described after Tabaru's citation.

Methods: The study has been carried out at the Department of Surgical and Oncological Sciences of the University of Palermo. It has been based on 2000 cases analysed from June 2001 to December 2003.

[Observations about a case of giant splenic cyst].

The Authors, on the basis of a case of giant spleen cyst with positive tumoral markers, analyse some epidemiological and clinical aspects related to splenic non parasitic cysts. They affirm the priority of the conservative surgery, whenever possible, followed by an appropriate follow-up, although in this case their therapeutic choice was radical, due to the lack of residual parenchyma. In accordance with the data of several publications, as well as on the basis of the results obtained, the conservative approaches have been reevaluated, above all in view of the modern findings related to the function of the spleen.

Capacity of coronal dentin to increase fiberglass post retention: a pull-out test.

Purpose: To evaluate the capacity of residual dentin in the coronal part of the root canal to increase the retention of serrated fiberglass posts (Extra-glass P-6%).

Methods: 40 freshly-extracted maxillary central incisors were randomly and evenly divided into four test groups (TGs) with no (TG0), one (TG1), two (TG2) and three (TG3) coronal walls, respectively. After shaping, the canals were filled with gutta-percha and prepared to receive fiberglass posts.

[A rare complication of ERCP: Mallory-Weiss syndrome].

Objective: To describe the management and outcome after endoscopic treatment of hematemesis by Mallory-Weiss Syndrome (MWS) occurred after CPRE (suspected choledocolithiasis).

Background Data: Although cough and retching is common during EGD or CPRE, MWS resulting from endoscopy seems to be uncommon (0.0001-0.