Dermal melanocytosis of the scalp associated to intracranial melanoma: malignant blue nevus, neurocutaneous melanosis, or neurocristic cutaneous hamartoma?

Intracranial invasion of cellular blue nevus is extremely rare, and its malignant transformation is even less common. The differential diagnosis includes neurocutaneous melanosis and neurocristic cutaneous hamartoma. A 50-year-old female presented with intracranial melanoma in contiguity with a congenital blue nevus on the scalp.

Eosinophil degranulation patterns in nasal polyposis: an ultrastructural study.

Background: Eosinophils are possibly the most important inflammatory cells in the pathogenesis of rhinosinusitis with nasal polyposis. Eosinophil degranulation is the mechanism by which these cells exert their inflammatory action. Knowledge of eosinophil state and degranulation mode therefore may help us to better understand this disease.

Effect of total nasal obstruction on nocturnal oxygen saturation.

Background: Nasal obstruction is considered a risk factor for sleep-disordered breathing (SDB), although the relationship has not been established clearly. This study explores the repercussion of total nasal packing on arterial oxygen saturation during the nocturnal resting hours and its implication in SDB.

Methods: Forty patients were subjected to total nasal packing after nasal surgery or epistaxis.

Malignant fibrohistiocytoma of the parotid region. Report of a case.

Most salivary gland tumors are benign, malignant lesions accounting for 15-30% of the total. The most frequent site of salivary gland neoplasms is the parotid gland (80% of all cases). We present a case of malignant fibrohistiocytoma with atypical features due to its location (in the parotid region), size and rapid growth.

Upper lateral cartilage transposition in the surgical management of nasal valve incompetence.

Introduction: The treatment of nasal valve dysfunction is very controversial and many otorhinolaryngologists do not always take surgery into consideration. The purpose of this paper is to present the author's surgical technique and the description of 13 patients on which it may work.

Material And Method: Thirteen cases presenting with nasal obstruction secondary to nasal valve dysfunction are reviewed.

Inverted papilloma of the sphenoid sinus.

Inverted nasosinusal papilloma is a benign tumor accounting for less than 4% of all nasal masses. The lesion originates in the mucosa lining the nasal cavities, the locations in decreasing order of frequency being the lateral wall of the nasal fossa, ethmoid sinus, and maxillary sinus; the sphenoid sinus is only rarely affected. Despite its benign histology, the tumor shows aggressive behavior and can be associated to carcinomas.