Peritoneal cancer histological subtypes. Peritoneal cancer risk factors, [Antibiotic prophylaxis in surgery for colorectal cancer].
- Mutaţii BRCA1 şi BRCA2 – cancer ereditar sân/ovar
- Peritoneal cancer tests, Lichid peritoneal (test PET)
- The utility of immunohistochemistry in the diagnosis of ovarian carcinoma
- Peritoneal Cancer Index (PCI) by diagnostic laparoscopy prior to HIPEC
- Peritoneal cancer risk factors, [Antibiotic prophylaxis in surgery for colorectal cancer].
The purpose of this paper is to quantify the incidence of different histological types of ovarian tumors and to demonstrate the clinical importance of an effective screening program, considering the paucisymptomatic nature of this pathology. The incidence of ovarian epithelial tumors varied across age groups, our study peritoneal cancer histological subtypes including women aged between 34 and 64 years old.
Knowing the age distribution plays an important role in the implementation of screening programs. Peritoneal cancer histological subtypes cases presented with similar symptomatology: pelvic pain, abdominal distension and ascites.
Ovarian high-grade serous carcinoma is a type of malignancy that is rare among young adult women, being more frequent in postmenopausal women. We present the case of a young woman with this type of malignant tumor, who in addition already had extension beyond the pelvis at the time of diagnosis, which is a poor prognostic factor.
The gross appearance of these tumors was overlapping in different histological subtypes, showing variable cystic and solid components. The histological subtypes included in our study were: serous carcinoma, low grade and high grade, mucinous carcinoma, endometrioid carcinoma and clear cell carcinoma. A positive correct diagnosis of the histological subtype is essential for therapy and follow-up, and immunohistochemial studies should be performed in difficult cases.
There is a large series of antibodies used for the positive diagnosis of ovarian carcinoma, so the pathologist should know what algorithm to use in approaching a diagnosis in order to obtain a correct result.
Scopul acestei lucrări este de a cuantifica incidența diferitelor tipuri histologice de tumori ovariene și de a demonstra importanța clinică a unui program eficient de screening, având în vedere natura paucisimptomatică a acestei patologii. Incidența tumorilor epiteliale ovariene a variat în funcție de grupurile de vârstă, grupul nostru de studiu incluzând femei cu vârsta cuprinsă între 34 și 64 de ani.
Mutaţii BRCA1 şi BRCA2 – cancer ereditar sân/ovar
Cunoașterea distribuției peritoneal cancer histological subtypes vârste joacă un rol important în implementarea programelor de screening. Toate cazurile au prezentat simptomatologie similară: durere pelviană, distensie abdominală și ascită. Aspectul macroscopic al acestor tumori se suprapune în diferite subtipuri histologice, prezentând componente variabile chistice și solide.
Subtipurile histologice incluse în studiul nostru au fost carcinomul seros, de grad scăzut sau crescut, carcinomul mucinos, carcinomul endometrioid și carcinomul cu celule clare.
Peritoneal cancer tests, Lichid peritoneal (test PET)
Un diagnostic corect pozitiv al subtipului histologic este esențial pentru terapie și follow-up, iar studiile imunohistochimice trebuie efectuate în cazuri dificile. Există o serie mare de anticorpi folosiți pentru diagnosticul pozitiv al carcinomului ovarian, astfel încât anatomopatologul ar trebui să știe ce algoritm să utilizeze în abordarea unui diagnostic pentru a obține un rezultat corect. Cuvinte cheie epiteliu carcinom ovar imunohistochimie Introduction Ovarian cancer is a public health problem that affects women of reproductive age and is a major cause of morbidity and mortality.
Early diagnosis is the primary method of ameliorating complications and long-term prognosis, but this is hampered by reduced symptomatology, with most patients presenting in advanced stages. From tothe incidence rate and the mortality rate decreased by 0. The most important factor in determining the prognosis of the patient is the tumor stage. For epithelial ovarian cancer, current screening methods ultrasound and tumor markers have not been as effective as in cervical or breast tumors.
Ovarian epithelial tumors represent a heterogeneous class of neoplasia, classified by cell type in serous, mucinous, endometrioid and clear cell.
Because there are no benign equivalent tissues in the ovary, the mechanism of carcinogenesis was attributed initially to the ovarian epithelium mesotheliumbut recent studies have proposed that serous tumors are secondary tumors, derived from lesions of the fallopian tube fimbria, while endometrioid tumor or clear cells tumors are secondary to ovarian endometriosis 4. Ovarian epithelial tumors are classified according to the degree of nuclear atypia, tumor proliferation and the presence or absence of stromal invasion, in benign, borderline and malignant conditions.
The borderline tumors are called this way because they present cytological and histological aspects peritoneal cancer histological subtypes are intermediate between benign and malignant. Materials and method The purpose of this paper is to quantify the incidence of different histological types of ovarian tumors and to demonstrate the clinical importance of an effective screening program, considering the paucisymptomatic nature of this pathology.
Symptoms suggestive for this pathology were noted to demonstrate the silent clinical appearance of ovarian neoplasia. Specimens were obtained from limited tumor excision, but also from oophorectomy and hysterectomy with bilateral anexectomy, formalin fixed and paraffin embedded, then stained with Hematoxylin-Eosin. In some cases, additional immunohistochemical stains were needed to clarify the diagnosis.
Results This study included data from a batch of 23 ovarian carcinomas, selected from ovarian pathology patients. The incidence of ovarian epithelial tumors varies across age groups, our study group including women aged between 34 and 64 years old. Knowing peritoneal cancer histological subtypes age distribution plays an important role in the implementation of screening programs. All cases presented with similar symptomatology: pelvic peritoneal cancer histological subtypes, abdominal distension and ascites in two cases.
In the category of malignant serous tumors, we included 9 patients, 6 low-grade and 3 high-grade. The low-grade serous carcinoma was non-invasive and showed a papillary-type development, with small nuclei, rare mitoses and a hyalinized stroma with occasional psamoma bodies.
Immunohistochemical assays showed positivity to CK7 and ER. Figure 1.
- Helminthosporium en arroz
- Mutații BRCA1 și BRCA2 - cancer ereditar sân/ovar - Synevo
- Parazitii genelor
- Peritoneal cancer genetic Sindromul cancerului ereditar – genetica și cancerul
The immunohistochemical assays showed, by contrast to the previous low-grade serous cases, a mutated expression of p53 and high Ki67 index. The pattern of p53 immunosay is very important and the result should peritoneal cancer histological subtypes to the presence or absence of a mutation.
A strong and diffuse immunoexpression of p53, as well as a completely negative immunostaining should be interpreted as an indicator of a TP53 gene mutation. In our cases, all high grade showed mutated status of TP53 gene. Hormone receptor testing showed no difference from the low-grade cases and is not useful in the differential diagnosis. Also, all cases of peritoneal cancer histological subtypes low-grade and high-grade serous carcinoma exhibited diffuse nuclear positivity with WT1. Figure 2.
The utility of immunohistochemistry in the diagnosis of ovarian carcinoma
High-grade serous carcinoma of the ovary, HE, 40x, and p53 mutated, 40x The cases of carcinomas with glandular architecture, atypical cells and foci of squamous metaplasia were classified as endometroid carcinomas due to their resemblance to the endometrium 5 cases.
The immunohistochemical profile of endometriod carcinomas is similar to that of benign endometrial tumors, presenting a positive reaction for cytokeratins and both estrogenic and progesterone receptors and different values of Ki67, depending on the aggresive character of the tumor.
In one case, the initial intraoperative diagnosis was endometriod cyst, while extensive grossing for the final diagnosis revealed the presence of a peritoneal cancer histological subtypes area of endometrioid carcinoma Figure 3.
Figure 3. Endometrioid ovarian carcinoma and associated endometrioid cyst, HE, 40x A third histopathological category of ovarian epithelial tumors were the mucinous tumors, which represented 2.
Citate duplicat Peritoneal cancer histological subtypes, Number 2, View in PDF Number of views: 63 Oxidative stress is involved in the pathophysiology of many chronic diseases, peritoneal cancer histological subtypes heart failure. Oxidative stress is an imbalance between the production of reactive oxygen species ROS and the antioxidant defense. The overproduction of ROS can lead to cellular damage and eventually cellular death. This applies also in patients with chronic heart failure, who present a dramatic increase of oxidative stress associated with a pronounced decrease of the peritoneal cancer histological subtypes defense mechanisms.
On gross examination, two cases showed cystic appearance and the rest were solid with dimensions between 6 and 14 cm. In peritoneal cancer histological subtypes case, the mucinous adenocarcinoma has shown an expansive pattern of development, without any stromal invasion and complex architecture, while the rest were infiltrative. Figure 4. The year-old patient who was diagnosed with this tumor had epiploic metastasis at admission.
Because all bilateral or large mucinous ovarian tumors should be considered secondary dissemination until proven otherwise, immunohistochemical tests are compulsory. In our cases, three tumors turned out to be primary tumors, two were metastasis from a colorectal adenocarcinoma and one of them was a Krukenberg tumor metastasis from a gastric carcinoma. Figure 5. Primary mucinous ovarian adenocarcinoma, HE, 40x, and Peritoneal cancer histological subtypes positive The Krukenberg tumor showed a specific pattern, with signet ring infiltrating tumoral cells, Ck20, CDx2 and CEA positive, but the diagnosis cannot be relied solely on histological and immunohistochemical pattern and it had to be confirmed by the clinical context.
Peritoneal Cancer Index (PCI) by diagnostic laparoscopy prior to HIPEC
Krukenberg tumor, HE, x and CK20 positive, x Clear cell carcinomas are rare tumors and we only found two cases that showed very different histological pattern: one had hobnail cell that protruded into the lumina, while the other showed clear cytoplasm.
The arhitecture was heterogenous in both cases, with tubular-cystic, papillary cores with hyalinization and solid area. The immunohistochemical tests are useful mainly for the differential diagnosis with serous and mucinous carcinoma. Also, Ki67 had a high value in both cases, as these types of tumors are rather aggressive Figure 8. Figure 8. Clear cell carcinoma of the ovary - EMA positive, x, and Ki67 positive, cancerul bucal se transmite Discussions Malignant ovarian neoplasms are the seventh most common form of cancer diagnosed in the female population.
Another important aspect of this pathology is the reduced symptomatology medicamente pentru helminti pentru copii the incipient stages. The main symptoms are abdominal pain, palpable abdominal mass, or vaginal bleeding, which are predominantly found in borderline and malignant tumors 8.
In some cases, the rapid increase in size leads to torsion of the ovary and important pain.
Peritoneal cancer risk factors, [Antibiotic prophylaxis in surgery for colorectal cancer].
The screening for this pathology consists in several methods, such as: transvaginal ultrasonography with or without contrast, BRCA mutation testing, or tumor marker dosing. An element of interest in this pathology is represented by risk factors still incompletely elucidated. The main process involved in pathogenic epithelial ovarian tumors is inflammation of the surface epithelium. The inflammatory changes occurring at the time of ovulation and hyaline body formation cause alterations of epithelial cell DNA A positive correct diagnosis of the histological subtype is essential for therapy and follow-up.
False negative results, that might come up intraoperatively, should be solved by extensive grossing of the surgical specimen.
Cancer ovarian stage 1. Utilitatea imunohistochimiei în diagnosticul carcinomului ovarian Peritoneal cancer histological subtypes Cancer ovarian stage 1. Comprehensive staging in ovarian cancer Ovarian cancer epithelial The utility of immunohistochemistry in the diagnosis of ovarian carcinoma The purpose of this paper is to quantify the incidence of different histological peritoneal cancer histological subtypes of ovarian tumors and to peritoneal cancer histological subtypes the peritoneal cancer peritoneal cancer histological subtypes subtypes importance of an effective screening program, considering the paucisymptomatic nature of this pathology. The incidence of ovarian epithelial tumors varied across age groups, our study group including women aged between 34 and 64 years old. Peritoneal cancer risk factors, Utilitatea imunohistochimiei în diagnosticul carcinomului ovarian Utilitatea imunohistochimiei în diagnosticul carcinomului ovarian Cancer ovarian - Wikipedia - Ovarian cancer epithelial Knowing the age distribution ovarian cancer epithelial an important role in the implementation of screening programs.
In our study, only one case showed false negative result. Most cases of ovarian carcinoma will need immunohistohemical confirmation, especially the mucinous subtypes. Ovarian mucinous tumors represent a wide range of neoplasms, from benign to malignant, and are distinct from other histological and molecular ovarian epithelial tumor subtypes. The assessment of ovarian mucosal tumors requires the correlation of clinical data, imaging aspects, contralateral ovary status, the presence or absence of intraperitoneal mucin and the macroscopic aspect of the appendix.
Although in most cases a positive diagnosis of a benign lesion does not pose diagnostic problems, the differential diagnosis between a primary ovarian tumor and peritoneal cancer histological subtypes metastasis is difficult to perform intraoperatively or in the classic histological examination.