histological characteristics
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Pathobiology ◽  
2022 ◽  
pp. 1-8
Author(s):  
Bruna Minniti Mançano ◽  
Mariana Bisarro dos Reis ◽  
Daniel Antunes Moreno ◽  
Flávia Escremim de Paula ◽  
Carlos Roberto de Almeida Junior ◽  
...  

Herein, we present a rare case of a nine-month-old boy diagnosed with infant-type hemispheric glioma (gliosarcoma subtype) at the left frontal lobe. Following subtotal resection, the patient started chemotherapy with the BABY POG protocol. We describe the clinical diagnosis, histological characteristics, radiological features, molecular aspects, and management of this tumor. A comprehensive molecular analysis on the tumor tissue showed a <i>TPR-NTRK1</i> gene fusion. The patient was treated with a TRK inhibitor, larotrectinib, and exhibited a stable disease with residual lesion following 8 months of target therapy. The present study is the first report of an infantile gliosarcoma harboring <i>NTRK1</i> rearrangement treated with larotrectinib.


Author(s):  
Hisham Abdullah Almottowa ◽  
Abdulmohsen Yaseer Alkhars ◽  
Maram Hussam Hassan ◽  
Hamad Adel Alhamad ◽  
Saad Munawwikh Alshammari ◽  
...  

Ulcerative colitis (UC) and Crohn’s disease (CD) are two major inflammatory disorders of the intestinal wall collectively known as inflammatory bowel disease (IBD). Colorectal carcinoma (CRC) is the most significant and grave consequence of IBD and is preceded by dysplasia in majority of the cases. In this review we aim to discuss the various types of dysplasia found in patients with CRC due to IBD. A thorough literature search was conducted in online databases such as PubMed, Google Scholar, from which all studies published in the last ten years were included in this review. The major development in diagnostic procedures and visualization modalities have aided our understanding of dysplasia, which is now known to be the strongest predictor and marker for CRC development. However, the unpredictable behavior and progression of dysplasia still warrants vigilant surveillance. Dysplasia has been classified on histological characteristics using grades of dysplasia from ‘negative for dysplasia’ to ‘high grade dysplasia’. On visibility via an endoscope from ‘visible dysplasia’ to ‘invisible dysplasia’ and macroscopic features of ‘conventional dysplasia’ and ‘non-conventional dysplasia’. No single classification can be utilized to define the stage of dysplasia and more importantly predict its progression and outcome of CRC. Using evidence-based medicine an integrated classification expanding on a management algorithm must be formulated by a panel of experts to steer management of the disease. A multidisciplinary, tailored approach with a strong emphasis on regular and timely surveillance to ensure early detection of CRC can enhance quality of life and patient outcomes.


Placenta ◽  
2022 ◽  
Vol 117 ◽  
pp. 156-160
Author(s):  
Hadas Ganer Herman ◽  
Or Marom ◽  
Liron Koren ◽  
Eran Horowitz ◽  
Letizia Schreiber ◽  
...  

2021 ◽  
Author(s):  
José Luis Navarro-Olvera ◽  
Armando Armas-Salazar ◽  
José Damián Carrillo-Ruiz ◽  
Jesús Q. Beltrán ◽  
Gustavo Parra-Romero ◽  
...  

This chapter describes the epidemiology, clinical and neuroimaging features, histological characteristics, surgical approach, outcomes, and prognostic factors of different cases of very rare intracranial tumors, associated with complex clinical syndromes. Highlighting the important aspects in the diagnosis and management that were considered relevant through the experience of our center. Here we included an intracranial Rosai-Dorfman disease manifested as an apparent multiple meningiomatosis, a choroid plexus papilloma clinically manifested as a hemifacial spasm originated by a compression of the facial colliculus, and a neuroenteric cyst associated with Klippel-Feil syndrome. This type of tumor presents a challenge to the neurosurgeon, originating various questions about its management. In this chapter, we present the experience we had with these pathologies to establish the most appropriate management decisions.


2021 ◽  
Vol 51 (3) ◽  
pp. 103-112
Author(s):  
L. V. Adamyan ◽  
E. L. Yarotskaya

On the basis of the Department of Operative Gynecology of the Scientific Center for Obstetrics, Gynecology and Perinatology of the Russian Academy of Medical Sciences from 1992 to 2002. examination, treatment and monitoring of 1234 patients with endometriosis was carried out, which served as material for the study of morphofunctional, endocrine, immune, biochemical, genetic aspects of endometriosis. Our clinical and scientific experience allowed us to determine our own positions and a circle of discussion questions corresponding to the main directions of further research on this problem, which are: is endometriosis a disease or not ?; development mechanisms; classification; diagnostic criteria; features of histological characteristics; endometriosis and genetics; endometriosis and the immune system; endometriosis and adenomyosis; retrocervical endometriosis; endometriosis and pelvic pain; endometriosis and adhesions; endometriosis and infertility; traditional and non-traditional approaches to diagnosis and treatment.


2021 ◽  
Author(s):  
Li Wei ◽  
Xiaoqing Liu ◽  
Qiao Tang ◽  
Hu Li ◽  
Peng Hu

Abstract Background: We analyzed correlations between significant liver histological characteristics and clinical variables in HBV-infected patients and provided recommendations on treatment decisions for patients age younger than 30-year-old.Methods: Liver biopsy was performed on 161 chronic HBV-infected patients with ALT ≤ 40 U/L from July, 2000 – November, 2019. Median age was 39(18-70) years old. Histologic assessment was based on the Scheuer scoring system. Results: Significant necroinflammation and fibrosis were observed in 65.2% (105/161) and 52.2% (84/161) patients of all cases. The pathological abnormality was significantly negatively correlated with viral level in HBeAg-positive subjects, and based on ROC curve analysis, the viral level to predict obvious liver pathological changes was 6.7 log10 IU/ml in those patients. Threshold value of ALT (25 U/L) based on the distribution of ALT and virus levels. Patients younger than 30 years old, almost all had significant pathological alteration with HBV-DNA < 6.7 log10 IU/ml; However, the ratio of insignificant liver’s inflammation and fibrosis were 65% and 70% with HBV-DNA levels ≥ 6.7 log10 IU/ml respectively, on that basis, it could have a further rising, reaching 67.5% and 75% combining with ALT ≤ 25 U/L. Conclusion: Viral load was a better factor to reflect hepatic histological abnormality in Chronic HBV-infected patients with HBeAg-positive and persistently normal ALT whose age ≤ 30 years, 5000000 IU/ml was a suitable threshold.


Cancers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 6288
Author(s):  
Magdalena Cybula ◽  
Lin Wang ◽  
Luyao Wang ◽  
Ana Luiza Drumond-Bock ◽  
Katherine M. Moxley ◽  
...  

(1) Background. PDX models have become the preferred tool in research laboratories seeking to improve development and pre-clinical testing of new drugs. PDXs have been shown to capture the cellular and molecular characteristics of human tumors better than simpler cell line-based models. More recently, however, hints that PDXs may change their characteristics over time have begun to emerge, emphasizing the need for comprehensive analysis of PDX evolution. (2) Methods. We established a panel of high-grade serous ovarian carcinoma (HGSOC) PDXs and developed and validated a 300-SNP signature that can be successfully utilized to assess genetic drift across PDX passages and detect PDX contamination with lymphoproliferative tissues. In addition, we performed a detailed histological characterization and functional assessment of multiple PDX passages. (3) Results. Our data show that the PDXs remain largely stable throughout propagation, with marginal genetic drift at the time of PDX initiation and adaptation to mouse host. Importantly, our PDX lines retained the major histological characteristics of the original patients’ tumors even after multiple passages in mice, demonstrating a strong concordance with the clinical responses of their corresponding patients. (4) Conclusions. Our data underline the value of defined HGSOC PDXs as a pre-clinical tumor model.


2021 ◽  
Vol 29 ◽  
pp. 1-20
Author(s):  
Beatriz Akemi Gonçalves ◽  
Acary Souza Bulle de Oliveira

Introduction. Through muscle biopsy we can observe the formation of vacuoles that alter the structure of cells and tissues in Pompe's disease. The presence of these vacuoles varies as the disease progresses, relating to the broad clinical spectrum presented by the disease. Objectives. After confirming the disease, examine the possibility of diagnosing or excluding the diagnosis of Pompe's disease through the vacuolar characteristics presented. Method. Analysis of the muscle biopsy material of selected patients at the Neuromuscular Diseases Investigation Clinic at the Federal University of São Paulo. Through staining and histochemical techniques, a comparative study of the histological characteristics found was performed. Results. Thirty-three biopsies had the diagnosis of Pompe's disease confirmed, being 13 women and 20 men. Of this group, 23 received the diagnosis when they were 18 years old or more, and 10 received the diagnosis under the age of 18 years. Delimiting membrane and subsarcolemal location were the main vacuolar characteristic found, manifesting in 86.6% of the studied cases. Integration between the vacuole membranes was observed in 62.5% of the cases. We also found necrosis, replacement of muscle tissue by connective or adipose tissue, increased mitochondrial activity and absence of predominance in one type of fiber. Conclusion. Muscle biopsy allows to analyze a series of peculiarities presented by vacuoles in Pompe's Disease and, thus, it proves to be a sure technique, allowing to reach a quick conclusion and to identify determining factors for the clinical conduct and maintenance of quality of life of the patient with Pompe's disease.


Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3446
Author(s):  
Theerapat Kheawkanha ◽  
Wuttigrai Boonkum ◽  
Thevin Vongpralub ◽  
Vibuntita Chankitisakul

The effect of age on fertility was investigated in Thai native chickens. The objective of this study was to determine the effects of age (mature and old) on the morphological characteristics of the reproductive organs and the histological characteristics of the uterovaginal junction (UVJ) tissues, resident sperm in the UVJ, and fertility duration in Thai native hens. We found no differences in the morphological characteristics of the reproductive organs, except for the number of follicles and the sizes of the fifth large yellow follicle in mature hens, which were greater than those in old hens (p < 0.05). The diameter of the sperm storage tubules (SSTs) epithelium was larger in old hens than in mature hens (p < 0.05), whereas the epithelium height was lower in old hens (p < 0.05). The number of sperm in the SSTs was greater in mature hens compared with old hens (p < 0.05). Mature hens showed a higher fertility rate than old hens. Our results suggest that, in old hens, the function of the SSTs is impaired, and sperm cannot be retained. Such a deterioration of the SSTs may be one of the factors involved in the decline in fertility.


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