Ovarian hepatoid carcinoma without staining for alpha-fetoprotein in the primary site

1995 ◽  
Vol 5 (4) ◽  
pp. 314-318 ◽  
Author(s):  
T. Nishida ◽  
T. Sugiyama ◽  
A. Kataoka ◽  
K. Ushijima ◽  
S. Ota ◽  
...  
Keyword(s):  
Tumor Tissue ◽  
Primary Site ◽  
Alpha Fetoprotein ◽  
Normal Range ◽  
Ovarian Carcinomas ◽  
Hepatoid Carcinoma ◽  
Hepatocellular Carcinomas ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm ◽  
Afp Production

An ovarian hepatoid carcinoma associated with minimal alpha-fetoprotein (AFP) production is described. The tumor involved both ovaries, and had metastasized to the omentum, uterus and retroperitoneal lymph nodes. The neoplastic cells were arranged in sheets, had abundant eosinophilic cytoplasm, central nuclei and distinct cellular borders. Despite the morphologic similarity to the histology of a hepatocellular carcinoma, elevation of the serum AFP level was minimal, at 74.0 ng ml−1 (normal range: under 20 ng ml−1), and the value normalized after surgery and subsequent chemotherapy. An immunohistochemical technique revealed focal staining for albumin in the tumor tissue and AFP in the uterine metastasis. Since the primary tumor itself did not stain for AFP, it is suggested that there may be hepatoid ovarian carcinomas without AFP production, a situation found in some hepatocellular carcinomas.

scholarly journals THE ROLE OF ALPHA-FETOPROTEIN RECEPTOR IN THE DELIVERY OF TARGETED PREPARATIONS IN ONCOLOGY

2017 ◽  
Vol 22 (1) ◽  
pp. 4-14
Author(s):  
H. M Treshalina ◽  
G. B Smirnova ◽  
S. A Tsurkan ◽  
J. R Tcherkassova ◽  
N. A Lesnaya
Keyword(s):  
Tumor Cells ◽  
Malignant Tumors ◽  
Human Tumor ◽  
Tumor Model ◽  
Mitochondrial Pathway ◽  
Alpha Fetoprotein ◽  
Malignant Cells ◽  
Tumor Models ◽  
A Cell ◽  
Afp Production

There was executed the analysis of thematic literature during from 1956 to 2015 devoted to receptors to fetal proteins, including to alpha-fetoprotein (AFP) known in medicine as oncomarker and used by malignant cells for the organization of tumoral homeostasis. As protein carrier, AFP similar to albumin takes of vitally important molecules in a space «hydrophobic pocket» and moves inside a cell, but as the cancer-embryonal antigen (CEA) - determines the existence of a malignant tumor, but not the type of a neoplasm. On the bounding of AFP with teratogen and their internalization and delivery in an embryo there is based the development of ways of «address» delivery of substances into a cell. This is realized by means of receptor mediated endocytosis via specific membranous receptors to AFP (ReCAF) with high selectivity concerning malignant cells of various genesis. Up to 90% of all malignant cells of the human and tumor models for human and mammalians express AFP receptors, including rather recently opened stem tumor cells - the most probable source of metastasing. AFP production and expression of receptors is selectively raised in malignant tumors of patients and human tumor models. The hyperproduction of AFP and hyperexpression of ReCAF are related to the histologic type of tumor model and are characteristic for embrional cell tumors and hepatoblastomas with initially low drug sensitivity or with the resistance. When choosing the model it is necessary to consider that in different types of tumor cells ReCAF have specific features in cultivation which are not pronounced in conditions of an animal organism. More differentiated tumors are characterized by the larger level of the AFP production and a hyperexpression of ReCAF. The use of subcutaneous tumor xenografts signal for AFP localizations with the hyperexpression of receptors, allows to reveal mostly evidentially the effectiveness of the therapeutic system at the preclinical level. Address delivery of therapeutic systems created on the basis of AFP or its fragments is capable of causing the change of their pharmacological properties. The therapeutic prize is possible due to the induction of process of apoptosis via the mitochondrial pathway, but at the same time the fall in the cytotoxic capacity of system is possible.

scholarly journals Leukoencephalomalacia in horses associated with immature corn consumption

2019 ◽  
Vol 49 (3) ◽  
Author(s):  
Joanna Vargas Zillig Echenique ◽  
Pablo Estima-Silva ◽  
Daniela Brayer Pereira ◽  
Lucas Santos Marques ◽  
Luiza Soares Ribeiro ◽  
...  
Keyword(s):  
White Matter ◽  
Clinical Signs ◽  
Inflammatory Cells ◽  
Cell Swelling ◽  
Fusarium Spp ◽  
Column Method ◽  
Reproductive Phase ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm ◽  
In The Beginning

ABSTRACT: Horse leukoencephalomalacia (ELEM) is a disease caused by the ingestion of mycotoxins (fumonisins) produced by fungi of the genus Fusarium that infect corn and/or its byproducts. This disease has been described by ingestion of mature corn with humidity above 15% at temperatures below 20°C. The aim of this paper was to report an outbreak of leukoencephalomalacia in horses fed with immature corn. Two horses out of three showed neurological signs approximately seven days after eating immature corn in its reproductive phase (R2, milky grains). Corn was harvested and administered directly to the animals, with no storage. Deaths occurred approximately 24 hours after the onset of clinical signs. Grossly, there were multifocal dark red to brown areas in the white matter of the telencephalon and hyppocampus and thalamus. Histologically, there was edema and hemorrhage in several areas of the telencephalon white matter, which corresponded to dark red to brown areas observed in the macroscopy. There was also foci of malacia with presence of reactive astrocytes with abundant eosinophilic cytoplasm and inflammatory cells. Diffuse capillary wall degeneration and endothelial cell swelling were also observed. Two ppm of fumonisin were detected by immunoaffinity column method (VICAM) in the immature corn sample. The water activity in this cereal, when the grain is still milky, is 0.98 and can predispose it to growth of mycotoxin-producing fungi. In the present case, fumonisin was found in milky grains in the beginning of the reproductive phase (R2), which suggested that even immature corn may be infected by Fusarium spp. and should not be administered to horses.

Granular cell tumour of the larynx

1998 ◽  
Vol 112 (4) ◽  
pp. 373-376 ◽  
Author(s):  
Luis V. Victoria ◽  
Henry T. Hoffman ◽  
Robert A. Robinson
Keyword(s):  
Granular Cell ◽  
Cell Tumour ◽  
Granular Cell Tumour ◽  
Routine Examination ◽  
Common Region ◽  
Complete Excision ◽  
Neuronal Tissue ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm ◽  
Uncommon Location

AbstractGranular cell tumour (GCT) is a benign tumour with abundant eosinophilic cytoplasm filled with granules of varying sizes. These granules are the defining characteristic of the GCT and are believed to represent lysosomes in varying stages of fragmentation. The commonly used term granular cell myoblastoma, found in the older literature, is a misnomer because the tumour is clearly not of muscle origin. Among the major theories of origin, some support the tumour's derivation from neuronal tissue, histiocytes, fibroblast or Schwann cells. In the larynx, pseudoepitheliomatous hyperplasia may predispose to confuse the GCT with squamous cell carcinoma.The most common region of GCT is in the head and neck, accounting for approximately 30 to 50 per cent of all lesions. The larynx is relatively an uncommon location for these tumours, accounting for approximately three to 10 per cent of the reported cases.Affected patients typically present with persistent hoarseness, stridor, haemoptysis, dysphagia, and otalgia, but the tumour may be asymptomatic and be discovered only incidentally during a routine examination.Complete excision with an attempt to maintain normal stuctures generally results in cure.We present the case of a patient with typical features of a GCT of the larynx. The gross appearance, histopathology and brief discussion of the current literature are also presented.

scholarly journals Pediatric Papillary Renal Cell Carcinoma in a Horseshoe Kidney: A Case Report with Review of the Literature

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Abelardo Loya-Solis ◽  
Lucía Alemán-Meza ◽  
Luis Carlos Canales-Martínez ◽  
Rodolfo Franco-Márquez ◽  
Alim Adriana Rincón-Bahena ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Horseshoe Kidney ◽  
Papillary Renal Cell Carcinoma ◽  
Renal Tumors ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm ◽  
History Of ◽  
The Right

Renal cell carcinoma is the most common malignancy of the kidney in adults. In children, however, it only accounts for an estimated 1.8 to 6.3% of all pediatric malignant renal tumors. Papillary renal cell carcinoma is the second most common type of renal cell carcinoma in children. We present the case of a 12-year-old boy with a 2-month history of abdominal pain, unexplained weight loss, and gross hematuria. Computed tomography revealed a horseshoe kidney and a well-defined mass of 4 cm arising from the lower pole of the right kidney. Microscopically the tumor was composed of papillae covered with cells with abundant eosinophilic cytoplasm and high-grade nuclei with prominent nucleoli. Immunohistochemistry was performed; EMA, Vimentin, and AMACR were strongly positive while CK7, CD10, RCC antigen, TFE3, HMB-45, and WT-1 were negative. Currently, 10 months after the surgical procedure, the patient remains clinically and radiologically disease-free.

scholarly journals Characterization of A Rare Case of Vulvar Epithelioid Sarcoma with local recurrence and metastases

2021 ◽  
Vol 156 (Supplement_1) ◽  
pp. S81-S81
Author(s):  
E Shkolnik ◽  
D Cai
Keyword(s):  
Lymph Node ◽  
Local Recurrence ◽  
Tumor Cells ◽  
Epithelioid Sarcoma ◽  
Molecular Testing ◽  
Adjuvant Radiation ◽  
Inguinal Lymph Node Dissection ◽  
Mesenchymal Neoplasm ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm

Abstract Introduction/Objective Epithelioid sarcoma (ES) is a rare, malignant mesenchymal neoplasm that has a known tendency for local recurrence, regional lymph node involvement, and distant metastases. Two histologic variants have been recognized: classic ES also known as the distal type, and proximal-type ES (PES). The classic ES is common in young adults. It occurs more frequently in the distal upper extremities followed by the distal lower limbs and has a male prevalence of 2:1. Conversely, PES commonly involves deep tissues in the pelvic region, including the genital area. It tends to occur in older patients and follows a more aggressive clinical course. In the female genital tract, PES occurs most frequently in the vulva. The incidence of primary sarcoma of the vulva accounts for 1.5-5% of all malignant tumors, making PES a very rare incidence. Methods/Case Report Here we report a 60-year-old female diagnosed with vulvar epithelioid sarcoma treated with a right radical vulvectomy and bilateral inguinal lymph node dissection in 2008. In 2017, further surgery and adjuvant radiation were given for local recurrence. In 2020, the patient developed left hip pain and was found to have an expansile lytic lesion in the left proximal femur. Extensive resection was performed. Grossly the vulvar lesion was nodular with diffuse hemorrhage, degeneration, and necrosis. Microscopically, the tumor cells had large vesicular nuclei, prominent nucleoli, and abundant eosinophilic cytoplasm. Histologically, the morphology of the tumor cells are similar for the primary vulvar specimen and the bone metastases. Immunohistochemically, the tumor cells are positive for vimentin, GATA, FLI-1, SMA, SMHC, partially positive for CAM5.2, AE1/AE3, CD31, and CD163. Immunohistochemistry was negative for CDX2, CD56, S-100, TTF-1, CK5/6, CK20, P40, mammoglobin, MOC31, ER, CK7, CK903, HMB45, PAX8. A Ki-67 proliferative index was around 30-40%. NGS molecular testing detected a SMARCB1 mutation with loss of exons 1-3 and exons 7-9 supporting the diagnosis of epithelioid sarcoma. Results (if a Case Study enter NA) NA Conclusion In summary, we report a case of PES of the vulva in a 60 year old female. Grossly, the lesion was nodular with histology showing large vesicular nuclei, prominent nucleoli, and abundant eosinophilic cytoplasm. It showed loss of INI1/SMARCB1 nuclear expression. The patient is receiving further adjuvant treatment and shows no new metastases.

scholarly journals Oncocytic Change in Thyroid Pathology

2021 ◽  
Vol 12 ◽  
Author(s):  
Sylvia L. Asa ◽  
Ozgur Mete
Keyword(s):  
Malignant Tumors ◽  
Genetic Alterations ◽  
Thyroid Tumors ◽  
C Cells ◽  
Cell Of Origin ◽  
Molecular Alterations ◽  
Thyroid Pathology ◽  
Thyroid C Cells ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm

Oncocytes are cells that have abundant eosinophilic cytoplasm due to the accumulation of mitochondria; they are also known as oxyphils. In the thyroid they have been called Hürthle cells but this is a misnomer, since Hürthle described C cells; for this reason, we propose the use of “oncocyte” as a scientific term rather than an incorrect eponym. Oncocytic change occurs in nontumorous thyroid disorders, in benign and malignant tumors of thyroid follicular cells, in tumors composed of thyroid C cells, and intrathyroidal parathyroid proliferations as well as in metastatic lesions. The morphology of primary oncocytic thyroid tumors is similar to that of their non-oncocytic counterparts but also is complicated by the cytologic features of these cells that include both abundant eosinophilic cytoplasm and large cherry red nucleoli. The molecular alterations in oncocytic thyroid tumors echo those of their non-oncocytic counterparts but in addition feature mitochondrial DNA mutations as well as chromosomal gains and losses. In this review we emphasize the importance of recognition of the spectrum of oncocytic thyroid pathology. The cell of origin, morphologic features including architecture, nuclear atypia and invasive growth, as well as high grade features such as mitoses and necrosis, enable accurate classification of these lesions. The molecular alterations underlying the pathological entity are associated with genetic alterations associated with oncocytic change. The arbitrary cut-off of 75% oncocytic change to classify a lesion as an oncocytic variant brings another complexity to the classification scheme of tumors that frequently have mixed oncocytic and non-oncocytic components. This controversial and often confusing area of thyroid pathology requires thoughtful and cautious investigation to clarify accurate diagnosis, prognosis and prediction for patients with oncocytic thyroid lesions.

scholarly journals Histopathological study of canine hepatoid gland tumours

2021 ◽  
Vol 52 (3) ◽  
Author(s):  
Sudheesh S. Nair ◽  
Sudheesh S. Nair ◽  
Sudheesh S. Nair ◽  
Sudheesh S. Nair ◽  
Sudheesh S. Nair
Keyword(s):  
Histopathological Examination ◽  
Excisional Biopsy ◽  
Histopathological Study ◽  
Surgical Removal ◽  
Tumour Mass ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm ◽  
Mitotic Figures ◽  
The Masses ◽  
Animal Sciences

Hepatoid gland neoplasms arise due to disorganized and uncontrolled proliferation of cells of hepatoid glands. These are the modified sebaceous glands located mainly in the perianal area. Gross and histological findings of canine hepatoid gland tumours were evaluated. Dogs of different breed, age and sex that were presented to Department of Veterinary Surgery and Radiology, College of Veterinary and Animal Sciences, Mannuthy formed the materials for the present study. Grossly, tumours were solitary or multiple irregular shaped intradermal masses. The excisional biopsy samples were collected in 10 per cent neutral buffered formalin after surgical removal of tumour mass. Histopathologically, the masses were encircled by fibrovascular capsule which extended to the parenchyma as tumour stroma, which separated it into lobules. Two cases of hepatoid gland adenoma one case of hepatoid gland epithelioma and two cases of carcinoma were recognised on histopathological examination. Hepatoid adenoma were characterised by proliferation of hepatocyte like hepatoid gland epithelial cells with extensive sebaceous differentiation and were arranged in cords and anastomosing trabeculae. In hepatoid gland epithelioma, many of the cells were basaloid reserve cells with fewer hepatocyte like cells. Histopathological examination of carcinoma revealed irregular arrangement of the hepatoid cells which showed varying degrees of maturation and marked nuclear pleomorphism. The malignant hepatoid cells had abundant eosinophilic cytoplasm and large nuclei with several prominent nucleoli and mitotic figures.

scholarly journals An Update on Molecular Genetic Aberrations in Spitz Melanocytic Proliferations: Correlation with Morphological Features and Biological Behavior

2021 ◽  
Vol 50 (1) ◽  
pp. 157
Author(s):  
Daja Šekoranja ◽  
Jože Pižem ◽  
Boštjan Luzar
Keyword(s):  
Tyrosine Kinase ◽  
Molecular Genetic ◽  
Morphological Features ◽  
Biological Behavior ◽  
Serine Threonine Kinase ◽  
Genetic Aberrations ◽  
Threonine Kinase ◽  
Eosinophilic Cytoplasm ◽  
Abundant Eosinophilic Cytoplasm ◽  
Genetic Events

<p>The aim of the paper is to give an update on molecular genetic aberrations in Spitz melanocytic proliferations with special em- phasis on their correlation with morphological features and biological behavior. The Spitz group of melanocytic proliferations is defined by a combination of distinctive morphological features and driver molecular genetic events. Morphologically, these neoplasms are characterized by large, oval, polygonal, or spindled melanocytes with abundant eosinophilic cytoplasm, vesicular nuclei with prominent nucleoli, often in association with epidermal hyperplasia. Molecular aberrations in Spitz melanocytic proliferations can be divided into two main groups, according to the driver genetic change: 1) 11p amplification/HRAS muta- tion, present in about 20% of cases, and 2) kinase fusions, present in about 50%, further subdivided into tyrosine kinase fusions (ALK, ROS1, NTRK1, NTRK3, MET, RET) or serine-threonine kinase fusions (MAP3K8, BRAF). Driver genetic aberrations can be detected along the whole biological spectrum of Spitz melanocytic proliferations, and are mutually exclusive. Although driver genetic aberrations enable proliferation of melanocytes, additional genetic events (often biallelic inactivation of CDKN2A and TERT promoter mutations) are necessary for the development of overt Spitz malignancy.</p><p><strong>Conclusions</strong>. Recent studies have demonstrated that certain driver genetic aberrations are more often associated with the benign spectrum of Spitz melanocytic proliferations and indolent biological behavior (11p amplification/HRAS mutation, tyrosine kinase fusions). In contrast, some driver aberrations are more frequent in the atypical/malignant spectrum of Spitz melanocytic proliferations with a potential for aggressive biological behavior (serine-threonine kinase fusions). In addition, certain driver aberrations are often associated with distinctive morphological features. However, none of the morphological features is entirely specific for any of these driver genetic aberrations. Immunohistochemistry for ALK, ROS1, and pan-TRK can be used for screening purposes to detect cor- responding fusion proteins.</p>

scholarly journals Ascitis as a unique microenvironment of tumors in ovarian cancer: interaction with prognosis and chemoresistance

2019 ◽  
Vol 6 (2) ◽  
pp. 8-20
Author(s):  
A. B. Villert ◽  
L. A. Kolomiets ◽  
N. V. Yunusova
Keyword(s):  
Ovarian Cancer ◽  
Ascitic Fluid ◽  
Tumor Tissue ◽  
Molecular Genetic ◽  
Biomarker Detection ◽  
Ovarian Carcinomas ◽  
System Parameters ◽  
Igf System ◽  
Genetic Level ◽  
Igfbp 3

The severe heterogeneity of ovarian carcinomas on the molecular genetic level is associated with the absence of specific markers of chemoresistance. At the same time, ascites is an attractive biomarker detection fluid because it is easily obtained. The review is dedicated to the latest advances in the study of components characteristics of ascitic fluid in terms of their relationship with chemoresistance. Оwn data are submitted regarding the contents of the IFR system parameters (free IGFs, as well as IGFBP-3, IGFBP-4 and PAPP-A) in ascitic fluids and tumor tissue in disseminated ovarian cancer, which show the importance of their study. It is shown that the proteins level of the IGF system substantially depend on the volume of ascitic fluid. Studying the features of ascitic fluid in ovarian cancer is directly related to the prospect of new opportunities for disseminated ovarian cancer treatment.

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