Assuntos
Células Dendríticas/patologia , Neoplasias Tonsilares/patologia , Adolescente , Células Dendríticas/ultraestrutura , Feminino , Humanos , Linfócitos/patologia , Microscopia Eletrônica , Tonsila Palatina/patologia , Receptores de Complemento 3b/análise , Receptores de Complemento 3d/análise , Neoplasias Tonsilares/ultraestruturaRESUMO
Prostatic glandular tissue in man is associated with varying forms of acellular structures. These include corpora amylacea, as well as more recently described prostatic crystalloids. We describe, for the first time to our knowledge, intracytoplasmic inclusions in benign prostatic epithelial cells of the central and transition zones of the prostate gland. Despite extensive histochemical, immunohistologic, and electron microscopic investigation, the exact nature of these inclusions remains obscure.
Assuntos
Corpos de Inclusão/patologia , Doenças Prostáticas/patologia , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Epitélio/patologia , Humanos , Lactente , Masculino , Pessoa de Meia-IdadeRESUMO
Adenoid cyst-like carcinoma of the prostate is a rare but distinctive variant of prostatic adenocarcinoma. Adenoid cystic carcinoma is most commonly encountered in the salivary glands, and the cell of origin is thought to be the myoepithelial cell. Electron microscopic studies of the human prostate have not revealed myoepithelial differentiation. Myoepithelial cells of the human prostate are thought to arise in seromucinous ectopic glands. A case of adenoid cyst-like carcinoma of the prostate gland is documented, and the histological, immunohistochemical, and electron microscopic features of this tumor are discussed. These features are compared with five cases of classic salivary gland adenoid cystic carcinoma. To define the myoepithelial cell population of the prostate gland, 12 normal prostate glands were studied. Prostatic adenoid cyst-like carcinoma differs from adenoid cystic carcinoma of salivary gland origin, and it is therefore postulated that the behavior of these tumors may likewise differ.
Assuntos
Adenocarcinoma/patologia , Cistos/patologia , Neoplasias da Próstata/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias das Glândulas Salivares/patologiaRESUMO
Ischaemic necrosis of the lesser curve of the stomach is thought to be a specific but rare complication of highly selective vagotomy. While it commonly presents as a free perforation, it may also present as sloughing of the mucosa only, a gastric fistula or a sealed perforation of the lesser curve mimicking a chronic gastric ulcer. We describe a case in which ischaemic necrosis of the lesser curve presented as a chronic gastric ulcer from a sealed perforation.
