1,720,968 research outputs found
Scanning electron microscopic features of Kaposi's sarcoma.
No full textIn order to clarify the three-dimensional structure of Kaposi's sarcoma (KS) five cases of KS of the skin were observed with a scanning electron microscope (SEM). KS lesions were investigated both in vascular and spindle cell areas and were compared with similar areas observed by light microscopy. KS appears as a spongelike neoplasm consisting of irregular vascular channels lacking endothelial cells and well-developed basement membranes. Vascular spaces and vascular slits are packed with numerous red blood cells (RBCs). SEM features of KS share some similarities with those of hemangiopericytoma, a vascular tumor composed of mature endothelial cells surrounded by pericytes. These findings are consistent with the hypothesis according to which the proliferating cells of KS are viewed as immature endothelial cells with partial differentiation into pericytes
SCANNING ELECTRON-MICROSCOPIC FEATURES OF KAPOSI-SARCOMA
No full textIn order to clarify the three-dimensional structure of Kaposi's sarcoma (KS) five cases of KS of the skin were observed with a scanning electron microscope (SEM). KS lesions were investigated both in vascular and spindle cell areas and were compared with similar areas observed by light microscopy. KS appears as a spongelike neoplasm consisting of irregular vascular channels lacking endothelial cells and well-developed basement membranes. Vascular spaces and vascular slits are packed with numerous red blood cells (RBCs). SEM features of KS share some similarities with those of hemangiopericytoma, a vascular tumor composed of mature endothelial cells surrounded by pericytes. These findings are consistent with the hypothesis according to which the proliferating cells of KS are viewed as immature endothelial cells with partial differentiation into pericytes
Analisi della variazione geografica del rischio per tumori della tiroide nel Nord Sardegna. III Congresso Nazionale della Società Italiana di Statistica Medica.
No full textPapulonecrotic tuberculide. Presentation of 4 cases
No full textAbstract
Four young patients simultaneously affected by morphological variations of papulonecrotic tuberculid and lymphnode and pulmonary tuberculosis (three cases) are reported. The clinical, therapeutic, histological and immunological aspects of papulous tuberculid are discussed and the different diagnostic approaches to this rare disease are evaluated
Criteri di stringenza nella diagnostica istopatologica delle malattie infiammatorie croniche idiopatiche dell’intestino (IBD)
No full textBalanoposthitis xerotica obliterans.
No full textRiassunto. Vengono riportati 48 casi di balanopostite xerotica obliterans (lichen scleroatrofico del pene)osservati consecutivamente in 8 anni presso la nostra clinica dermatologica . La malattia, interessa giovani adulti principalmente tra i 25 e i 35 anni e determina in due terzi dei casi un fimosi e nei restanti casi lesioni sclero-atrofiche.Sul piano istopatologico le lesioni sono riconducibili atre stadi del lichen scleroatrofico.La terapia locale comprende un trattamento medico -topico e uno chirurgico; nei casi iniziali sono utili le emulsioni a base di corticosteroidi a bassa potenza, il progesterone percutaneo in gel all'1% e le sostanze emollienti.Il trattamento chirurgico, effettuato in 20 pazienti, consiste nella circoncisione allargata, nella decorticazione con lisi delle aderenze balaniche e/o nella copertura con innesti a tutto spessore e nella meatoplastica. on questa terapia abbiamo ottenuto risultati funzionali ed estetici soddisfacenti e duraturi
Maxillary chondrosarcoma. (Report of two cases)
No full textTwo cases of chondrosarcoma of the maxilla are reported together with the clinical and histological differential diagnosis. The origin of this rare tumour in the maxilla, a bone with exclusive membranous ossification, is discussed in accordance with the new concept of cell differentiation in neoplasia
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