[Aggressive fibromatosis of the head and neck in pediatric age. A case report and review of the literature].

Background: Desmoid tumor is a rare benign mesenchymal neoplasm in children primarily originated in the muscle connective tissue, fascial sheaths, and musculoaponeurotic structures. It is often misdiagnosed as fibroids, reactive processes or low-grade fibrosarcomas. It is characterized by slow growth, locally aggressive nature, high recurrence rate without metastasize capacity.

Multiple odontogenic abscesses. Thoracic and abdomino-perineal extension in an immuno competent patient.

Introduction: Odontogenic infection (OI) may lead to death if it extends beyond the buccal area. The virulence of pathogens and the local and systemic status of the patient influence the propagation of the pathogen, either by anatomical continuity or haemematogenous dissemination. Several severe complications derived from OI have been reported in the head, neck and chest.

An approach to the rational use of steatotic donor livers in liver transplantation.

Steatosis or fatty change is a common finding in donor liver biopsies during liver transplantation, and seems to be more frequent than in the general population. Fat can be stored in hepatocytes within macrovacuoles (macrosteatosis) or microvacuoles (microsteatosis), with different degrees of severity. Higher degrees of both macro and microsteatosis may increase the severity of the ischemia-reperfusion lesion producing an initial poor function in the recipient.

[Non alcoholic steatohepatitis. Mid-term clinical and histologic course in 10 patients].

Background: The progressive character of the hepatic lesions in nonalcoholic steatohepatitis (NASH) has not been well established. In the present study, the clinical and histological course of this condition was evaluated at medium term.

Methods: Then patients (6 females and 4 males) with NASH, in a non-cirrhotic stage at the time of diagnosis, were followed up during 58 +/- 7 months (range 24 to 88 months).