Search results for "histologic"
showing 10 items of 98 documents
Clinical and histological diagnosis of a case of familial adult metachromatic leucodystrophy
1974
Die detaillierte nosographische Analyse eines 25jahrigen Patienten mit adulter metachromatischer Leukodystrophie wird mitgeteilt. Der Patient zeigt langsam progrediente psychische, charakterliche, intellektuelle, zentralund periphernervose Veranderungen. — Die biochemische Diagnostik ergab einen weitgehenden Arylsulfatase A-Mangel in Urin und Leukocyten sowie eine erhohte Sulfatidausscheidung im Urin (2–7 mg je Liter). — Durch histochemische Untersuchungen einer Nervus suralis-Biopsie wurde metachromatisches Speichermaterial nachgewiesen.
Rapid malignant progression of an intraparenchymal choroid plexus papillomas
2018
Background: Choroid plexus tumors (CPTs) are rare neoplasms accounting for only 0.3-0.6% of all brain tumors in adults and 2-5% in children. The World Health Organization (WHO) classification describes three histological grades: grade I is choroid plexus papilloma (CPP), grade II is atypical papilloma, and grade III is the malignant form of carcinoma. In adults, CPTs rarely have a supratentorial localization. Case Description: Here we report a very rare case of an intraparenchymal parietal CPP with a rapid histological transition from grade I to grade III WHO in a 67-year-old man, in <7 months. Conclusion: Because of the rarity of these oncotypes, descriptions of each new case are useful…
Sudden death in water: Diagnostic challenges
2016
Abstract The authors report a case of sudden death in a breath-holding diver and highlight the forensic diagnostic difficulties in opining the cause of sudden death in water. The autopsy showed increased thickness of the left ventricular wall with a distinct pattern of concentric hypertrophy, evident particularly in the subaortic interventricular septum. Histological examination revealed diffuse interstitial fibrosis and associated findings of multifocal myocyte disarray especially evident in the subaortic interventricular septum. The analysis and discussion of this case made it possible to attribute sudden death to a lethal arrhythmia following myocyte disarray and hypoxia caused by breath…
Potential lack of "standardized" processing techniques for production of allogeneic and xenogeneic bone blocks for application in humans.
2013
In the present study, the structure of two allogeneic and three xenogeneic bone blocks, which are used in dental and orthopedic surgery, were histologically analyzed. The ultimate goal was to assess whether the components postulated by the manufacturer can be identified after applying conventional histological and histochemical staining techniques. Three samples of each material, i.e. allogeneic material-1 and -2 as well as xenogeneic material-1, -2 and -3, were obtained commercially. After decalcification and standardized embedding processes, conventional histological staining was performed in order to detect inorganic matrix, cellular or organic matrix components. Allogeneic material-1 sh…
Odontogenic tumours: A review of 266 cases.
2012
Objectives: The aim of this study was to examine the relative frequency of odontogenic tumours at a tertiary hospital in Ibadan, as well as to study the various histologic types based on WHO 2005 classification and to compare results from this study with those of previous studies. Study design: The records of the Oral Pathology Department of University College Hospital were reviewed. Lesions diagnosed as odontogenic tumours were categorized into four groups based on WHO 2005 classification and were analyzed for age, sex and site using SPSS for Window (version 18.0; SPSS Inc. Chicago, IL) and frequency tables were generated. Results: Two hundred and sixty six (41.7%) cases of odontogenic tum…
Ossifying renal tumor of infancy
2007
A renal ossifying tumor of infancy is a rare event with few cases having been published, and the etiology has not yet been established. We report on two new cases of this unusual neoplasm. A 2-year-old boy presented with intermittent painless gross hematuria. After several diagnostic procedures, an open pyelolithotomy was performed and the histological diagnosis of renal tumor of infancy was finally made. The history of the second case is very similar. An 8-week-old infant presented with gross hematuria. As in the first case, an open pyelolithotomy was performed and a tumor entirely covered with blood clots was found in the renal pelvis and completely removed. A histological diagnosis of re…
Validity of needle core biopsy in the histological characterisation of mammary lesions
2006
Summary Over the last few years, there has been an enormous increase in the use of needle core biopsy (CB) for the histopathological characterisation of suspect lesions of the breast. The aim of this study was to verify the diagnostic reliability of CB by comparing the histological results obtained with the use of this technique with those obtained from the whole of the surgically resected specimen. We studied 198 out of 426 patients with clinically and/or radiologically suspect breast lesions. We found correspondence between the histological examination of the whole of the excised specimen and that of the CB in 94.9% of the cases of infiltrating carcinoma and in 71.4% of those involving du…
Papulo-purpuric dermatitis of childhood: a distinct PLEVA-like eruption associated to SARS-CoV-2 infection. Clinical, histopathological and immunohis…
2021
Abstract We observed ten children with a papular eruption with purpuric features during the SARS‐CoV‐2 pandemic in Northern Italy (May‐December 2020). Histological examination showed signs of SARS‐CoV‐2‐related dermatosis. Evidence of nucleocapsid viral proteins using SARS‐CoV‐2 (2019‐nCoV) nucleocapsid antibody revealed cuticular staining of the deep portion of the eccrine glands in all cases.
Hemangiopericytoma of the Lung - a Rare Differential Diagnosis of Lung Tumors
1988
The authors report of a 50 year old woman who was operated on because of a rectum carcinoma 5 years ago. At a follow-up examination a 2 x 2 x 1 cm sized tumor was found in the lower lobe of the right lung. Under the diagnosis of lung metastasis after rectum carcinoma resection, operation (wedge resection) was carried out. The histological examination revealed the rare tumor hemangiopericytoma. Based on this case, frequency of the tumor, clinical symptoms, surgical treatment, prognosis as well as recurrence rate and formation of metastases are discussed.
Combined thoracotomy and laminectomy for spinal cavernomas with intrathoracic growth.
2007
Dumbbell shaped epidural cavernomas are uncommon lesions. Of these, the extraforaminal extension is usually limited, and the lesions are removed surgically by an extended laminectomy. We present two cases of dumbbell shaped epidural cavernomas with a considerable intrathoracic growth. They were resected through a combined thoracotomy and laminectomy. Only in the case in which a wide approach to the posterior mediastinum was performed it was possible to completely remove the lesion. Since it is possible to anticipate this histological diagnosis by the magnetic resonance imaging characteristics, we propose that a wide transthoracic approach should be performed associated to a laminectomy if a…