RESUMO
Blue nevus of the oral mucosa is a distinctly uncommon clincial entity. Careful review of the literature yielded thirty-one previously reported cases. The present article reports the occurrence of a blue nevus of the hard palate in a 58-year-old man. It is of interest since it is the smallest (1 by 1 mm.) intraoral blue nevus to be reported. A clinicopathologic study of the previous thirty-one cases and of our case suggests that this lesion has no age or sex predilection. The most common site of occurrence was the hard palate. There appears to be no tendency toward recurrence. A brief review of the historical background, clinical features, theories of possible origin, and differential diagnosis is presented. Excisional biopsy of localized areas of oral pibmentation, together with histopathologic study, is indicated to rule out melanoma.
Assuntos
Nevo Pigmentado/patologia , Neoplasias Palatinas/patologia , Diagnóstico Diferencial , Humanos , Masculino , Melanócitos/patologia , Pessoa de Meia-IdadeRESUMO
We believe that hypocycloidal tomography is the method of choice in the pre and postoperative evaluation of chronic nasal and paranasal sinus polyposis, based on the radiographic examinations of 80 patients who have undergone intranasal ethmoidectomy. Although our overall study is incomplete at this time due the extended period necessary for follow-up, we hope that the basic information which is now available will be beneficial to others.
Assuntos
Pólipos Nasais , Neoplasias dos Seios Paranasais , Seio Etmoidal/cirurgia , Humanos , Pólipos Nasais/diagnóstico por imagem , Pólipos Nasais/cirurgia , Neoplasias dos Seios Paranasais/diagnóstico por imagem , Neoplasias dos Seios Paranasais/cirurgia , RadiografiaRESUMO
A case of hamartoma of the spleen is reported. Radiographic examination revealed a mass containing innumerable calcifications in the left upper quadrant. Angiography demonstrated an avascular mass. The authors believe that such calcification and avascularity are late manifestations of a slowly-growing splenic tumor which may well be hypervascular if examined earlier.
Assuntos
Angiografia , Calcinose/diagnóstico por imagem , Hamartoma/diagnóstico por imagem , Neoplasias Esplênicas/diagnóstico por imagem , Calcinose/patologia , Hamartoma/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Esplênicas/patologiaRESUMO
Groups of rats exposed to daily inhalation challenge with aerosolized pigeon serum developed precipitating antibody within 2 weeks and definitive granulomatous inflammatory changes in the lung after 7 weeks of exposure. The dissociation of the two responses to an inhalation challenge indicate that the rat model may serve for screening of the various inhalant antigens for their sensitizing potential, and for investigation of the contributory role of some of the factors involved in the pathogenesis of hypersensitivity pneumonitis.
