Histological Grading of Meningioma Based on MIB-1 Immunoreactivity

Brain Tumor ◽  
1996 ◽  
pp. 69-78 ◽  
Author(s):  
Junko Hirato ◽  
Yoichi Nakazato ◽  
Masafumi Hirato
Keyword(s):  
Oncology ◽  
2000 ◽  
Vol 58 (1) ◽  
pp. 66-74 ◽  
Author(s):  
Tadashi Hasegawa ◽  
Ryohei Yokoyama ◽  
Yoon Hwan Lee ◽  
Tadakazu Shimoda ◽  
Yasuo Beppu ◽  
...  

2000 ◽  
Vol 20 (2-3) ◽  
pp. 83-91 ◽  
Author(s):  
Vénus Sharifi‐Salamatian ◽  
Anne de Roquancourt ◽  
Jean Paul Rigaut

Tumour progression is currently believed to result from genetic instability. Chromosomal patterns specific of a type of cancer are frequent even though phenotypic spatial heterogeneity is omnipresent. The latter is the usual cause of histological grading imprecision, a well documented problem, without any fully satisfactory solution up to now. The present article addresses this problem in breast carcinoma. The assessment of a genetic marker for human tumours requires quantifiable measures of intratumoral heterogeneity. If any invariance paradigm representing a stochastic or geostatistic function could be discovered, this might help in solving the grading problem. A novel methodological approach using geostatistics to measure heterogeneity is used. Twenty tumours from the three usual (Scarff‐Bloom and Richardson) grades were obtained and paraffin sections stained by MIB‐1 (Ki‐67) and peroxidase staining. Whole two‐dimensional sections were sampled. Morphometric grids of variable sizes allowed a simple and fast recording of positions of epithelial nuclei, marked or not by MIB‐1. The geostatistical method is based here upon the asymptotic behaviour of dispersion variance. Measure of asymptotic exponent of dispersion variance shows an increase from grade 1 to grade 3. Preliminary results are encouraging: grades 1 and 3 on one hand and 2 and 3 on the other hand are totally separated. The final proof of an improved grading using this measure will of course require a confrontation with the results of survival studies.


2021 ◽  
Vol 8 (2) ◽  
pp. 115-119
Author(s):  
Kavita Verma ◽  
Satya Raj Negi ◽  
Sanjay Garhwal

: A group of tumors that develops in the brain and spinal cord is called glioma. Histologically gliomas are classified into astrocytoma, ependymoma, oligodendroglioma, brain stem glioma and oligoastrocytoma. The present study was conducted to study histological grading of gliomas and correlate it with patient’s age, sex, GFAP staining, role of the Ki-67/MIB-1 labelling indices (PIs). The present retrospective study was conducted on 50 biopsies received. All specimens were subjected to immunohistochemistory for GFAP and MIB-1 and correlated with WHO grading for glioma.: High incidence of glial tumours was seen in the 3 and 4 decade with slight male predominance (60%), with commonest site being frontal lobe. Glioblastomas (Grade IV) constitute the most common glial tumour. A statistically significant correlation was observed between GFAP staining and Ki-67/MIB-1 with histological grading.: The study can prove helpful in diagnosis and histological grading of gliomas and in planning treatment protocols and strategies.


2020 ◽  
Vol 58 (08) ◽  
pp. 767-772
Author(s):  
Oliver Anliker ◽  
Wolfram Sieweke ◽  
Antonia Töpfer ◽  
Ines Wülker ◽  
Matthias Breidert

Zusammenfassung Einleitung Das Pylorusdrüsenadenom (PGA) ist eine unterdiagnostizierte, seltene Entität, die meist im Magen zu finden ist. Ähnlich wie kolorektale Adenome haben PGAs ein hohes Risiko für eine maligne Entartung zum Adenokarzinom von bis zu 12–47 %. Endoskopische Resektionen im Duodenum bergen ein erhebliches Risiko für Komplikationen. Die endoskopische Mukosaresektion (EMR) ist die derzeitige Standardtechnik zur Behandlung von duodenalen nichtampullären Adenomen. Die vollständigen Resektionsraten sind mit etwa 90 % beträchtlich hoch. Komplikationen wie Blutungen wurden bis zu 25 % verzeichnet. Die endoskopische Submukosadissektion (ESD) wird für die Resektion von Duodenalläsionen nicht empfohlen, da die Perforationsrate bis zu 35 % betragen kann. Die Anwendung der endoskopischen Vollwandresektion (EFTR) im Duodenum ist auf eine Fallstudie mit 20 Patienten beschränkt. Fall Ein 67-jähriger Patient mit attenuierter Polyposis coli (FAP) wurde zum Screening vorgestellt. Die Gastroskopie zeigte eine 20 mm große, nichtampulläre Läsion im proximalen Duodenum (Pars I). Die Ränder der Duodenalläsionen wurden mit einer Hochfrequenzsonde (HF) markiert. Eine integrierte Ballondilatation (20 mm) des oberen Ösophagussphinkters und des Pylorus erleichterte das Vorschieben des Device (FTRD®, Fa. Ovesco Endoscopy AG, Tübingen). Nachdem die Läsion mit einem Greifer in die Kappe gezogen worden war, erfolgte die Applikation der Bärenklaue, und die Läsion wurde anschließend mit der integrierten Schlinge reseziert. Eine einmalige Antibiotikaprophylaxe mit 2 g Ceftriaxon i. v. wurde während der Intervention verabreicht. Die Second-Look-Endoskopie erfolgte 24 Stunden nach der Resektion. Das Resektat zeigte eine PGA von 18 mm Größe im proximalen Duodenum (immunhistochemisch positiv für Mucin-1, Mucin-5, Mib 1). Zusammenfassung Hier präsentieren wir den ersten Fall einer duodenalen EFTR bei einem Patienten mit attenuierter FAP mit Erstbeschreibung eines Pylorusdrüsenadenoms. Derzeit gibt es keine spezifischen Richtlinien für die Entfernung und Überwachung. Die ASGE empfiehlt bei Pylorusdrüsenadenomen eine Resektions- und Überwachungsendoskopie im Abstand von 3–5 Jahren.


2013 ◽  
Vol 74 (S 01) ◽  
Author(s):  
Eric Monsalves ◽  
Soroush Larjani ◽  
Bruno Godoy ◽  
Boris Krischek ◽  
Kyle Juraschka ◽  
...  

2004 ◽  
Vol 101 (6) ◽  
pp. 1045-1048 ◽  
Author(s):  
Katsuyoshi Miyashita ◽  
Yutaka Hayashi ◽  
Hironori Fujisawa ◽  
Mitsuhiro Hasegawa ◽  
Junkoh Yamashita

✓ Solitary fibrous tumor (SFT) is a benign and rare neoplasm. To date, only 37 patients with intracranial SFTs have been reported. Although a number of the tumors were recurrent and some later underwent malignant transformation, none of these lesions progressed to cerebrospinal fluid (CSF) dissemination. In this paper the authors report a case of SFT in which the lesion recurred several times and ultimately was disseminated by the CSF. The patient was a 63-year-old woman with multiple intracranial and spinal tumors. Fifteen years before this presentation, at the age of 48 she had been hospitalized for resection of a falcotentorial tumor. During the ensuing 15 years she underwent multiple surgeries and sessions of radiation therapy for recurrent lesions. The exclusive location of her tumors in the subarachnoid space at the end of this 15-year period indicate CSF dissemination of the tumor. The tumor that was resected when the patient was 48 years old and the latest resected lesion were analyzed by performing immunohistological CD34, epithelial membrane antigen, vimentin, S100 protein, and reticulin staining, and determining the MIB-1 labeling index (LI). Most of the results were identical, and both tumors were diagnosed as SFT according to a staining pattern that showed a strong and diffuse positive reaction for CD34. Nevertheless, the authors noted that the MIB-1 LI increased from less than 1% in the original tumor to 13% in the latest tumor. The increased proliferation of MIB-1 indicates that the malignant transformation could have occurred during tumor recurrence with CSF dissemination.


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