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Endocrine Pathology

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https://www.readbyqxmd.com/read/28965201/eif1ax-mutation-in-a-patient-with-h%C3%A3-rthle-cell-carcinoma
#1
Michael C Topf, Zi-Xuan Wang, Kevin Furlong, Jeffrey L Miller, Madalina Tuluc, Edmund A Pribitkin
The EIF1AX gene is a novel cancer gene that has been reported in the tumorigenesis of papillary thyroid carcinoma, follicular variant papillary thyroid carcinoma, and anaplastic thyroid carcinoma. A 71-year-old woman presented with a right thyroid mass, which was follicular neoplasm on cytology. The fine needle aspirate of the nodule was examined by next-generation sequencing and found to harbor EIF1AX and TP53 mutations. Right thyroid lobectomy was performed with final pathology showing Hürthle cell carcinoma with capsular and vascular invasion...
September 30, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/29134370/endocrine-pathology-society-hubert-wolfe-award-for-2017-call-for-nominations
#2
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/29063495/calcitonin-producing-neuroendocrine-neoplasms-of-the-pancreas-clinicopathological-study-of-25-cases-and-review-of-the-literature
#3
Silvia Uccella, Annika Blank, Roberta Maragliano, Fausto Sessa, Aurel Perren, Stefano La Rosa
Increased levels of circulating calcitonin are a clue in the diagnosis of medullary thyroid carcinoma. However, hypercalcitoninemia can also be related to other pathological conditions, including pancreatic neuroendocrine neoplasms (PanNENs). Ectopic hormonal production is not unusual in both functioning and non-functioning PanNENs; however, little is known about the frequency of calcitonin expression in these neoplasms. The aims of this study were to assess the frequency of calcitonin immunoreactivity in PanNENs, independently from serum calcitonin levels, and to evaluate the clinicopathological and prognostic features of calcitonin-immunoreactive (Cal-IR) PanNENs, including a comparison with cases already reported in the literature...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/29032398/analysis-of-mir-96-and-mir-133a-expression-in-gastrointestinal-neuroendocrine-neoplasms
#4
Rakesh Mandal, Heather Hardin, Rebecca Baus, William Rehrauer, Ricardo V Lloyd
Grading of gastrointestinal neuroendocrine neoplasms (GI-NENs) relies mainly on mitotic activity and Ki-67 proliferation index. It is often difficult to predict metastatic potential of these neoplasms. Recent studies have shown that GI-NENs express a wide spectrum of microRNAs. We examined two microRNAs (miR-96 and miR-133a) that were recently identified in GI-NENs to determine if they could assist in evaluating the biological behavior of these neoplasms. A tissue microarray (TMA) was constructed with 51 primary GI-NENs, mainly from the small intestine and metastatic tumors from the same cases, including liver metastases (N = 20) and lymph node metastases (N = 33)...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/29019044/hobnail-variant-of-papillary-thyroid-carcinoma-a-literature-review
#5
REVIEW
Francesca Ambrosi, Alberto Righi, Costantino Ricci, Lori A Erickson, Ricardo V Lloyd, Sofia Asioli
Papillary thyroid carcinoma is the most common thyroid malignancy and it is usually associated with a good prognosis. However, recurrence, metastases, and cancer death may occur in 10 to 15% of patients with more aggressive types of papillary thyroid carcinoma, such as tall cell, columnar cell, solid variant, or the more recently described hobnail variant of papillary thyroid carcinoma. Papillary thyroid carcinoma with a prominent hobnail pattern is a moderately differentiated papillary thyroid carcinoma variant with aggressive clinical behavior and significant mortality...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28994039/utility-of-pit-1-immunostaining-in-distinguishing-pituitary-adenomas-of-primitive-differentiation-from-null-cell-adenomas
#6
Julieann C Lee, Melike Pekmezci, Jonathan L Lavezo, Hannes Vogel, Laurence Katznelson, Merav Fraenkel, Griffith Harsh, Mohanpal Dulai, Arie Perry, Tarik Tihan
Pit-1 immunostaining is not routinely used in the characterization of pituitary adenomas, and its utility in distinguishing adenomas dedicated towards the lactotroph, somatotroph, and thyrotroph lineage from null cell adenomas warrants further evaluation. Pituitary adenomas that were negative for expression of a basic panel of hormonal markers (ACTH, prolactin, and growth hormone) were further evaluated for TSH, SF-1, and Pit-1 expression using a tissue microarray. Among the 147 identified pituitary adenomas that were negative for ACTH, prolactin, growth hormone, and TSH, expression of SF-1 was present in 68 cases (46%)...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28844117/well-differentiated-thyroid-cancer-neovasculature-expresses-prostate-specific-membrane-antigen-a-possible-novel-therapeutic-target
#7
Maureen Moore, Suraj Panjwani, Rashmi Mathew, Michael Crowley, Yi-Fang Liu, Anna Aronova, Brendan Finnerty, Rasa Zarnegar, Thomas J Fahey, Theresa Scognamiglio
Prostate-specific membrane antigen (PSMA), a type II transmembrane glycoprotein receptor, is highly expressed in prostate cancer and in the tumor neovasculature of colon, breast, and adrenocortical tumors. Here, we analyzed PSMA expression in the neovasculature of various thyroid cancer subtypes and assessed whether PSMA expression is correlated with aggressive behavior. From a prospectively maintained database, we evaluated 91 samples from 68 patients, including 37 primary differentiated thyroid cancers (DTCs) [11 classic papillary (cPTC), 9 follicular-variant (FvPTC), 11 follicular (FTC), 6 radioactive iodine-refractory (RAIR)], 5 anaplastic (ATC) carcinomas, 9 distant and 12 lymph node metastases, 21 benign thyroid nodules, and 7 normal thyroid specimens...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28770422/depletion-of-beta-cell-intranuclear-rodlets-in-human-type-ii-diabetes
#8
Yi Yuan Zhou, Soufiane El Hallani, Fady Balaa, Waleed Mohammad, Douglas A Gray, John Woulfe
Intranuclear rodlets (INRs) are rod-shaped intranuclear bodies of unknown function present in the nuclei of pancreatic beta cells. Previous studies have demonstrated a significant depletion of INRs from beta cells in mouse models of type II diabetes, suggesting that they may have pathological significance. The objective of the present study was to determine whether beta cell INRs show quantitative alterations in human type II diabetes. In sections of non-neoplastic pancreas from 23 diabetic patients and 23 controls who had undergone complete or partial pancreatectomy, we detected a significant reduction in the proportion of INRs in insulin-immunoreactive beta cells...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28748505/comparison-of-consecutive-results-from-fine-needle-aspiration-and-core-needle-biopsy-in-thyroid-nodules
#9
Soon-Hyun Ahn, So-Yeon Park, Sang Il Choi
There are papers suggesting the complementary role of core needle biopsy (CNB) in the diagnosis of thyroid nodules. By comparing the result of CNB and fine needle aspiration (FNA) cytology performed in consecutive cases of thyroid nodules, the role of CNB was evaluated. Retrospective reviews of 2131 FNA and 275 CNB which were performed as first-line biopsy for 2406 thyroid nodules in 2187 patients were performed. The ultrasound (US) feature of thyroid nodule was classified following the risk of malignancy suggested by American Thyroid Association (ATA) guideline...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28730569/immune-escape-mechanism-is-impaired-in-the-microenvironment-of-thyroid-lymph-node-metastasis
#10
LETTER
Lucas Leite Cunha, Suely Nonogaki, Fernando Augusto Soares, José Vassallo, Laura Sterian Ward
We previously identified the infiltration of CD8+ lymphocytes and COX2 expression as an independent factor of risk for recurrence in papillary thyroid carcinoma (PTC) patients. However, the presence of lymph node (LN) metastasis at diagnosis lost its significance in a multivariate model analysis. These results encouraged us to compare the immune cells arrangement in the microenvironment of the LN metastasis and the primary tumor. We studied 104 consecutive PTC patients. Tissue specimens of both primary tumor and LN metastasis at the time of diagnosis were available in 19 out of them...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28710705/long-term-outcomes-of-patients-with-noninvasive-follicular-thyroid-neoplasm-with-papillary-like-nuclear-features-niftp-%C3%A2-4%C3%A2-cm-treated-without-radioactive-iodine
#11
LETTER
https://www.readbyqxmd.com/read/28493102/men2-syndrome-related-medullary-thyroid-carcinoma-with-focal-tyrosine-hydroxylase-expression-does-it-represent-a-hybrid-cellular-phenotype-or-functional-state-of-tumor-cells
#12
Ozgur Mete, Ahmed Essa, Anil Bramdev, Navendren Govender, Runjan Chetty
No abstract text is available yet for this article.
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28421464/a-novel-tp53-mutation-associated-with-twist1-and-sip1-expression-in-an-aggressive-adrenocortical-carcinoma
#13
Daniel Bulzico, Davi Coe Torres, Gerson Moura Ferreira, Bruno Ricardo Barreto Pires, Paulo Antônio Silvestre de Faria, Rocio Hassan, Eliana Abdelhay, Mario Vaisman, Leonardo Vieira Neto
Adrenocortical carcinomas (ACC) are very rare tumors related to TP53 mutations mostly in childhood onset cases. Epithelial-mesenchymal transition (EMT) transcription factors TWIST1 and Smad interacting protein 1 (SIP1) are related to poorer outcomes in other malignancies, but their role in ACC is unknown. We describe a case of an advanced metastatic ACC (Weiss-score of 9) in a patient at age 76. After primary tumor resection, mitotane therapy was started as palliation to low-volume liver metastasis. After a 2-year period of stable disease, the patient died due to brain metastasis...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28284009/pituitary-carcinoma-in-a-patient-with-an-sdhb-mutation
#14
Nicola Tufton, Federico Roncaroli, Irene Hadjidemetriou, Mary N Dang, Judit Dénes, Leonardo Guasti, Maria Thom, Michael Powell, Stephanie E Baldeweg, Naomi Fersht, Márta Korbonits
We present the first case of pituitary carcinoma occurring in a patient with a succinate dehydrogenase subunit B (SDHB) mutation and history of paraganglioma. She was initially treated for a glomus tumour with external beam radiotherapy. Twenty-five years later, she was diagnosed with a non-functioning pituitary adenoma, having developed bitemporal hemianopia. Recurrence of the pituitary lesion (Ki-67 10% and p53 overexpressed) occurred 5 years after her transsphenoidal surgery, for which she underwent two further operations followed by radiotherapy...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28102527/teratoma-of-the-sellar-region-a-case-report
#15
Wolfgang Saeger, Azadeh Ebrahimi, Rudi Beschorner, Hildegard Spital, Jürgen Honegger, Waldemar Wilczak
The case report describes a teratoma of the sellar region with a gland forming and an immature, relatively clear undifferentiated component without signs of anaplasia. Both components express TTF-1 indicating their presumable origin in the neurohypophysis as part of the circumventricular organs. The differential diagnosis includes pituitary adenoma and spindle cell oncocytoma with inclusion of Rathke's cleft cyst, pituitary blastoma, yolk sac tumor, and other germ cell tumors. The prognosis is the same as in the immature teratomas in the gonads, specifically unclear...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28084610/immunoglobulin-g4-igg4-related-hypophysitis
#16
Fabio Rotondo, Amro Qaddoura, Luis V Syro, Jason Karamchandani, David G Munoz, Mariam J Arroyave, William P Ospina, Michael D Cusimano, Kalman Kovacs
We report two different cases of IgG4-related hypophysitis. In the first case, a pituitary lesion was accompanied by lymphocytic meningitis possibly mimicking tuberculous meningitis. The second case was unassociated with involvement of other organs. No histologic differences were noted between the two cases indicating that the morphologic features of the hypophysial lesion do not depend on the presence of other lesions. The pathogenesis of IgG4 hypophysitis is not known, and further study is necessary to explore the cause, progression, and influencing factors of this disease...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/27838885/pathological-and-genetic-characterization-of-bilateral-adrenomedullary-hyperplasia-in-a-patient-with-germline-max-mutation
#17
Pauline Romanet, Carole Guerin, Pascal Pedini, Wassim Essamet, Frédéric Castinetti, Fréderic Sebag, Philippe Roche, Alberto Cascon, Arthur S Tischler, Karel Pacak, Anne Barlier, David Taïeb
In recent years, familial pheochromocytoma (PHEO) with germline mutations in the MAX (MYC associated factor X) gene has been reported in a few cases. Here, we investigated a 25-year-old patient with multiple PHEOs associated with a non-sense germline MAX mutation. Preoperative (18)F-FDOPA PET/CT revealed bilateral adrenal involvement with multiple tumors. In addition, both adrenal glands were found to have diffuse or nodular adrenal medullary hyperplasia (AMH), a histopathological feature previously described as a precursor of MEN2- and SDHB-related PHEOs but not MAX...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28766057/overview-of-the-2017-who-classification-of-pituitary-tumors
#18
REVIEW
Ozgur Mete, M Beatriz Lopes
This review focuses on discussing the main changes on the upcoming fourth edition of the WHO Classification of Tumors of the Pituitary Gland emphasizing histopathological and molecular genetics aspects of pituitary neuroendocrine (i.e., pituitary adenomas) and some of the non-neuroendocrine tumors involving the pituitary gland. Instead of a formal review, we introduced the highlights of the new WHO classification by answering select questions relevant to practising pathologists. The revised classification of pituitary adenomas, in addition to hormone immunohistochemistry, recognizes the role of other immunohistochemical markers including but not limited to pituitary transcription factors...
August 1, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28752484/composite-pheochromocytoma-paraganglioma-ganglioneuroma-a-clinicopathologic-study-of-eight-cases-with-analysis-of-succinate-dehydrogenase
#19
Sounak Gupta, Jun Zhang, Lori A Erickson
Ganglioneuromas represent the most well-differentiated spectrum of neoplasia arising from the sympathetic nervous system, while neuroblastomas represent the most poorly differentiated counterpart, and ganglioneuroblastomas represent intermediate stages of differentiation. Small series of cases have documented the co-occurrence of ganglioneuroma with a pheochromocytoma (Pheo)/paraganglioma (PGL) component. We report the clinicopathologic features of eight such cases, diagnosed between 2003 and 2015 with a mean follow-up of 22 months (1-47), which were evaluated for syndrome associations, SDHB expression, and clinical outcome...
July 27, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28733877/expanding-the-spectrum-of-colonic-manifestations-in-tuberous-sclerosis-l-cell-neuroendocrine-tumor-arising-in-the-background-of-rectal-pecoma
#20
David L Kolin, Kai Duan, Bo Ngan, J Ted Gerstle, Monika K Krzyzanowska, Gino R Somers, Ozgur Mete
Tuberous sclerosis complex (TSC) is an autosomal dominant neurocutaneous condition that predisposes to numerous proliferative lesions, including perivascular epithelioid cell tumors (PEComas), such as lymphangioleiomyomatosis (LAM) and angiomyolipomas, and rare neuroendocrine neoplasms. We describe herein a TSC2-harboring tuberous sclerosis patient manifesting with a synchronous well-differentiated L-cell rectal neuroendocrine tumor and leiomyomatosis-like LAM of the rectum. The background large bowel wall was thickened by confluent nodular areas comprising vessels and spindle-to-epithelioid cells, which are immunoreactive for myoid (smooth muscle actin, muscle specific actin, and desmin) and melanocytic markers (HMB45, Melan-A, microphthalmia transcription factor, and CD117)...
July 21, 2017: Endocrine Pathology
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