scholarly journals Epidemiological and pathological features of primary cardiac tumours in dogs from Poland in 1970–2014

2016 ◽  
Vol 64 (1) ◽  
pp. 90-102 ◽  
Author(s):  
Izabela Janus ◽  
Marcin Nowak ◽  
Agnieszka Noszczyk-Nowak ◽  
Rafał Ciaputa ◽  
Małgorzata Kandefer-Gola ◽  
...  
Keyword(s):  
Positive Reaction ◽  
Immunohistochemical Analysis ◽  
Histopathological Diagnosis ◽  
Beta Catenin ◽  
Minichromosome Maintenance ◽  
Ki 67 ◽  
Routine Diagnostics ◽  
Cardiac Tumours ◽  
Cardiac Neoplasms ◽  
Proliferative Markers

Primary heart tumours affect less than 1% of dogs. Due to their rare incidence, every research showing the frequency of cardiac tumours is valuable. Routine diagnostics is often complemented with immunohistochemical analysis. This study was conducted on 110 patient records from all veterinary faculties in Poland from dogs diagnosed with heart tumours between 1970 and 2014. The dogs’ age, breed and sex with tumour localisation and histopathological diagnosis were analysed. Because of its most common incidence, samples of haemangiosarcoma underwent further examination with assessment of the expression of cell markers that have not been evaluated earlier (i.e. minichromosome maintenance proteins and beta-catenin). We noted 111 tumours including 88.3% malignant and 10.8% benign ones. Haemangiosarcoma and aortic body tumour were the most frequent cardiac neoplasms in the dogs examined (45.9% and 27.9% of all tumours, respectively). Immunohistochemical analysis of haemangiosarcoma showed a positive expression of all markers examined. CD31, vimentin, and beta-catenin showed a positive reaction in all 11 samples examined. At least one proliferative marker (Ki-67, MCM-3 or MCM-7) showed a positive reaction in each sample. MCM-3 showed a higher expression than the two other proliferative markers (P = 0.006), but only Ki-67 showed a positive correlation with the mitotic index (P > 0.05, r = 0.89). Although beta-catenin, MCM-3 and MCM-7 showed a positive reaction in the haemangiosarcomas examined, their usefulness as diagnostic and prognostic factors should be a topic of further research.

scholarly journals Phyllodes tumor presented as fungating mass on right breast and fibroadenoma on contralateral breast: a case report

2020 ◽  
Vol 7 (2) ◽  
pp. 596
Author(s):  
Sribatsa Kumar Mahapatra ◽  
Pramit Ballav Panigrahi ◽  
Abinash Mahapatra ◽  
Srimanta Mahapatra
Keyword(s):  
Case Report ◽  
Wide Local Excision ◽  
Phyllodes Tumor ◽  
Left Breast ◽  
Contralateral Breast ◽  
Histopathological Diagnosis ◽  
Ki 67 ◽  
Tumor Margin ◽  
Proliferative Markers

This is an article reporting a large phyllodes tumor with fibroadenoma. A 25 years female presented with a fungating mass of size 20×15 cms in right breast since last 1 year and amass of size 3×3 cms in left breast since 6 month. Biopsy from right side and left side breast mass proven to be Cystosarcomaphyllodes and fibroadenoma respectively. Wide local excision with 1cm normal tumor margin on right side and   excision of mass on left side done. Proliferative markers like Ki-67 and P53 were in range of 1-2% and 3-4% respectively. Histopathological diagnosis of tumor was borderline phyllodes tumor (right side) and fibroadenoma (left side). Patient had an uneventful post-operative course and is presently on three monthly follow up since 1 year.

Umbilical metastasis (Sister Joseph's nodule) as a first sign of a disseminated ovarian carcinoma: comparative immunohistochemical analysis of primary tumor and its metastases

2005 ◽  
Vol 15 (2) ◽  
pp. 377-381
Author(s):  
D. Brasanac ◽  
I. Boricic ◽  
V. Todorovic ◽  
G. Basta-Jovanovic
Keyword(s):  
Lymph Node ◽  
Ovarian Carcinoma ◽  
Primary Tumor ◽  
Malignant Tumors ◽  
Immunohistochemical Analysis ◽  
Ca 125 ◽  
Beta Catenin ◽  
Cytokeratin 20 ◽  
Ki 67 ◽  
Umbilical Metastasis

The case of a 46-year-old female with umbilical metastasis as a first sign of an ovarian carcinoma is reported with the results of immunohistochemical analysis of primary tumor and lymph node and umbilical metastases. All specimens were positive for cytokeratin 7, CA 125, E-cadherin, alpha-, beta-, and gamma-catenin, as well as for MSH2. Staining with cytokeratin 20 and MLH1 was negative, and Ki-67 labeled from 5% (in the center of the lesions) to over 25% (at the periphery of the lesions) of the nuclei. Beta-catenin showed membranous positivity in the central parts and absence of staining at the periphery of ovarian tumor and umbilical metastasis, whereas lymph node metastasis presented with uniform reaction throughout. The results of immunohistochemical staining could point to the mechanisms employed by malignant tumors during invasion and growth of metastasis and suggest the possible role of the microenvironment in the expression of some adhesion molecules on tumor cells

scholarly journals The Immunohistochemical Expression of MCM-3, -5, and -7 Proteins in the Uterine Fibroids

2021 ◽  
Vol 43 (2) ◽  
pp. 802-817
Author(s):  
Piotr Rubisz ◽  
Lidia Hirnle ◽  
Christopher Kobierzycki
Keyword(s):  
Uterine Fibroid ◽  
Uterine Fibroids ◽  
Hormonal Contraceptives ◽  
Control Group ◽  
Proliferative Potential ◽  
Uterine Neoplasms ◽  
Minichromosome Maintenance ◽  
Ki 67 ◽  
Proliferative Markers ◽  
Positive Correlations

Uterine fibroids are the most common mesenchymal uterine neoplasms; their prevalence is estimated in 40%–60% of women under 35 and in 70%–80% of women over 50 years of age. The current research aims to focus on the etiopathogenesis of uterine fibroids, the factors that affect their growth, and markers with diagnostic and prognostic properties. The MCM (minichromosome maintenance) protein family consists of peptides whose primary function is participation in the molecular mechanism of creating replication forks while regulating DNA synthesis. The aim of this work was to determine the proliferative potential of uterine fibroid cells based on the expression of the Ki-67 antigen and the MCMs—i.e., MCM-3, MCM-5, and MCM-7. In addition, the expression of estrogen (ER) and progesterone (PgR) receptors was evaluated and correlated with the expression of the abovementioned observations. Ultimately, received results were analyzed in terms of clinical and pathological data. Materials and methods: In forty-four cases of uterine fibroids, immunohistochemical reactions were performed. A tissue microarray (TMA) technique was utilized and analyzed cases were assessed in triplicate. Immunohistochemistry was performed using antibodies against Ki-67 antigen, ER, PgR, MCM-3, MCM-5, and MCM-8 on an automated staining platform. Reactions were digitalized by a histologic scanner and quantified utilizing dedicated software for nuclear analysis. Assessment was based on quantification expression of the three histiospots, each representing one case in TMA. Results: In the study group (uterine fibroids), statistically significant stronger expression of all the investigated MCMs was observed, as compared to the control group. In addition, moderate and strong positive correlations were found between all tested proliferative markers. The expression of the MCM-7 protein also correlated positively with ER and PgR. With regard to clinical and pathological data, there was a negative correlation between the expression of MCMs and the number of both pregnancies and births. Significant reductions in MCM-5 and MCM-7 expression were observed in the group of women receiving oral hormonal contraceptives, while smoking women showed an increase in MCM-7, ER, and PgR. Conclusions: Uterine fibroid cells have greater proliferative potential, as evaluated by expression of the Ki-67 antigen and MCMs, than unaltered myometrial cells of the uterine corpus. The expression of MCM-7 was found to have strong or moderate correlations in all assessed relations. In the context of the clinical data, as well evident proliferative potential of MCMs, further studies are strongly recommended.

scholarly journals Evaluation of diagnostic utility of imprint cytology in paediatric renal tumours with special references to Ki 67 proliferative marker

2018 ◽  
Vol 10 (04) ◽  
pp. 437-442
Author(s):  
Namrata Maity ◽  
Chhanda Das ◽  
Madhumita Mukhopadhyay ◽  
Tamanna Parvin ◽  
Ashis Kumar Saha ◽  
...  
Keyword(s):  
Histopathological Examination ◽  
Tertiary Care ◽  
Immunohistochemical Analysis ◽  
Proliferation Index ◽  
Histopathological Diagnosis ◽  
Imprint Cytology ◽  
Care Hospital ◽  
Validity And Reliability ◽  
Ki 67 ◽  
Renal Tumours

ABSTRACT BACKGROUND: Pediatric renal neoplasms comprise about 7%–8% of all neoplasms in children. Wilms tumour (WT) is the most common among pediatric renal tumours. AIMS AND OBJECTIVES: The study was undertaken to study the epidemiological occurrence of pediatric renal tumours in a tertiary care hospital and to ascertain the validity and reliability of touch smear imprint cytology in intraoperative diagnosis of renal tumours and correlate with subsequent histopathological diagnosis and to assess the expression of proliferation marker Ki-67 in different components and stages of WT. MATERIALS AND METHODS: It was a single-institution-based prospective and observational study, conducted for 2 years (from October 2013 to September 2015) in the department of pathology at our hospital. A total of fifty cases were enrolled in this study, all were below 15 years of age. RESULTS: Imprint cytology showed sensitivity, specificity, and diagnostic accuracy of 83%, 98%, and 95.74%, respectively, in diagnosing benign and malignant renal tumours. There was statistically significant correlation of imprint cytology with confirmatory histopathological examination of excision specimen (P < 0.001). Immunohistochemical analysis of Ki-67 was done in all WT cases. Epithelial component had higher proliferative index than blastemal component with P = 0.0082, which was highly statistically significant. CONCLUSION: Imprint cytology is found to be a less expensive, simple, and rapid method, which can be used as an adjunct to histopathology. Correlation between proliferation index as measured with Ki-67 antibody and tumour stage was found. Ki-67 is thus a relevant marker for assessing the proliferative activity.

scholarly journals Minichromosome Maintenance Proteins MCM-3, MCM-5, MCM-7, and Ki-67 as Proliferative Markers in Adrenocortical Tumors

2019 ◽  
Vol 39 (3) ◽  
pp. 1151-1159 ◽  
Author(s):  
MICHAL APOROWICZ ◽  
PIOTR CZOPNIK ◽  
ELIZA KUBICKA ◽  
ALEKSANDRA PIOTROWSKA ◽  
PIOTR DZIEGIEL ◽  
...  
Keyword(s):  
Minichromosome Maintenance ◽  
Ki 67 ◽  
Adrenocortical Tumors ◽  
Proliferative Markers

scholarly journals The Role of Immunohistochemical Markers for the Diagnosis and Prognosis of Adrenocortical Neoplasms

2021 ◽  
Vol 11 (3) ◽  
pp. 208
Author(s):  
Anna Angelousi ◽  
Georgios Kyriakopoulos ◽  
Fani Athanasouli ◽  
Anastasia Dimitriadi ◽  
Eva Kassi ◽  
...  
Keyword(s):  
Transcriptome Analysis ◽  
Cox Regression ◽  
P53 Protein ◽  
Immunohistochemical Analysis ◽  
Ki 67 ◽  
Diagnosis And Prognosis ◽  
Immunohistochemical Markers ◽  
Small Series ◽  
Morphological Criteria ◽  
Survival And Development

Adrenal cortical carcinoma (ACC) is a rare cancer with poor prognosis that needs to be distinguished from adrenocortical adenomas (ACAs). Although, the recently developed transcriptome analysis seems to be a reliable tool for the differential diagnosis of adrenocortical neoplasms, it is not widely available in clinical practice. We aim to evaluate histological and immunohistochemical markers for the distinction of ACCs from ACAs along with assessing their prognostic role. Clinical data were retrospectively analyzed from 37 patients; 24 archived, formalin-fixed, and paraffin-embedded ACC samples underwent histochemical analysis of reticulin and immunohistochemical analysis of p27, p53, Ki-67 markers and were compared with 13 ACA samples. Weiss and Helsinki scores were also considered. Kaplan−Meier and univariate Cox regression methods were implemented to identify prognostic effects. Altered reticulin pattern, Ki-67% labelling index and overexpression of p53 protein were found to be useful histopathological markers for distinguishing ACAs from ACCs. Among the studied markers, only pathological p53 nuclear protein expression was found to reach statistically significant association with poor survival and development of metastases, although in a small series of patients. In conclusion, altered reticulin pattern and p53/Ki-67 expression are useful markers for distinguishing ACCs from ACAs. Immunohistopathology alone cannot discriminate ACCs with different prognosis and it should be combined with morphological criteria and transcriptome analysis.

scholarly journals Clear Cell Carcinomas of the Mullerian System: Does the Pathogenesis Vary Depending on Their Nuclear Grade and Their Association with Endometriosis? An Immunohistochemical Analysis

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Ahmad Alduaij ◽  
Katrine Hansen ◽  
Tahreem A. Karim ◽  
Cunxian Zhang ◽  
Michelle M. Lomme ◽  
...  
Keyword(s):  
Clear Cell ◽  
Immunohistochemical Analysis ◽  
Nuclear Grade ◽  
High Grade ◽  
Ki 67 ◽  
High Nuclear Grade ◽  
Positive Immunostaining

Clear cell carcinomas (CCC) of the mullerian system are considered high grade tumors, but morphologically, the cells of CCC show both low and high grade features. The aims of the current study were to categorize CCC into low and high nuclear grade types, correlate their association with endometriosis, and then observe possible variations in pathogenesis based on their expression of p53 and Ki-67. We studied 41 pure mullerian CCCs and designated each as either a high (HNG) or low (LNG) nuclear grade tumor. Morphologically, 17 (41%) CCCs were LNG and 24 (59%) were HNG. Nine (38%) HNG and 2 (12%) LNG tumors showed positive immunostaining with p53. Endometriosis was associated with 8 (47%) LNG tumors and 8 (33%) HNG CCCs. Of the 11 cases with p53 alteration, 4 (1 LNG and 3 HNG) were associated with endometriosis. Conclusions: HNG CCCs, irrespective of their association with endometriosis, have alterations of p53. In general, LNG ovarian and endometrial CCCs, irrespective of their association with endometriosis/adenomyosis, are less likely to show p53 alteration. It appears that mullerian CCCs may have variable pathogenesis depending on their nuclear grade and association with endometriosis. A larger study is needed to validate these findings.

scholarly journals Expression of the phosphorylated variant of the AKT1-kinase (p-AKT1) in well-differentiated pancreatic neuroendocrine tumors: immunohistochemical evaluation

2018 ◽  
Vol 46 (4) ◽  
pp. 314-322
Author(s):  
V. V. Delektorskaya ◽  
O. N. Solov'eva ◽  
G. Yu. Chemeris ◽  
Yu. I. Patyutko
Keyword(s):  
Liver Metastases ◽  
Neuroendocrine Tumors ◽  
Treatment Effectiveness ◽  
Disease Free Survival ◽  
Immunohistochemical Analysis ◽  
Pancreatic Neuroendocrine Tumors ◽  
Ki 67 ◽  
New Treatment ◽  
Well Differentiated ◽  
High Level

Background:Well-differentiated pancreatic neuroendocrine tumors (pNETs) represent a group of rare epithelial neoplasms with a highly variable clinical course. AKT1 is one of the most frequently activated protein kinases in pNETs, which promotes the tumor growth and is of interest as a prognostic factor and a target for new treatment approaches.Aim:To study the expression of the phosphorylated variant of AKT1-kinase (p-AKT1) in primary pNETs and their liver metastases and to correlate the results with various clinical and pathological parameters and the disease prognosis.Materials and methods:P-AKT1 expression was studied by the immunohistochemical analysis of the primary lesions and liver metastases in 52 pNETs patients.Results:A high level of cytoplasmic and/or nuclear immunoreactivity was detected in 24/52 of the primary pNETs (46.2%) and in 16/27 of their liver metastases (59.3%). p-AKT1 expression was observed in 3 (21.4%) of NET grade (G) 1, in 14 (46.7%) of NET G2, and in 7 (87.5%) of NET G3. p-AKT1 expression was more frequently identified in pNET G3 category and increased during the tumor progression in metachronous liver metastases, as compared to the corresponding primary tumor. In addition, p-AKT1 positivity was significantly associated with an increase of grade from G1 to G3 (p = 0.004), the Ki-67 index (p = 0.029), the pTNM stage (p = 0.0008), perineural invasion (p = 0.031) and a decrease in disease-free survival (p = 0.05).Conclusion:The results suggest that p-АКТ1 plays an important role in the pathogenesis of pNETs and may be an additional criterion for assessment of the prognosis and treatment effectiveness in this type of tumors.

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