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Immunohistochemistry for carcinoma of unknown primary

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https://www.readbyqxmd.com/read/29207991/investigation-of-c-kit-and-ki67-expression-in-normal-preneoplastic-and-neoplastic-canine-prostate
#1
Carlos Eduardo Fonseca-Alves, Priscilla Emiko Kobayashi, Chiara Palmieri, Renée Laufer-Amorim
BACKGROUND: c-KIT expression has been related to bone metastasis in human prostate cancer, but whether c-KIT expression can be similarly classified in canine prostatic tissue is unknown. This study assessed c-KIT and Ki67 expression in canine prostate cancer (PC). c-KIT gene and protein expression and Ki67 expression were evaluated in forty-four canine prostatic tissues by immunohistochemistry, RT-qPCR and western blot. Additionally, we have investigated c-KIT protein expression by immunoblotting in two primary canine prostate cancer cell lines...
December 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29158935/synchronous-hpv-related-cancer-of-bilateral-tonsils-detected-using-transoral-endoscopic-examination-with-narrow-band-imaging
#2
Fukuko Shimizu, Kenji Okami, Koji Ebisumoto, Daisuke Maki, Akihiro Sakai, Go Ogura, Naoya Nakamura, Masahiro Iida
Background: The incidence of human papillomavirus- (HPV-) related oropharyngeal squamous cell carcinoma (OPSCC) has been rapidly increasing worldwide. HPV is reported in approximately 50% cases of OPSCC in Japan. However, there are few reports of synchronous bilateral HPV-positive tonsillar carcinoma, and, in almost all those cases, carcinoma was detected using positron emission tomography/computed tomography and/or bilateral tonsillectomy. Methods and Results: We report the case of a 63-year-old male with bilateral tonsillar carcinoma detected using transoral endoscopic examination with narrow-band imaging (NBI)...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/29103771/the-down-regulation-of-tapp2-inhibits-the-migration-of-esophageal-squamous-cell-carcinoma-and-predicts-favorable-outcome
#3
Fang Liu, Fei Ye, Zongyu Guan, Yi Zhou, Fengjun Ji, Qing Zhang, Jianping Zhang, Tianyi Zhang, Songhua Lu
Tandem pH domain-containing proteins TAPP1 and TAPP2 are adaptor proteins that specifically bind to phosphatidylinositol-3,4-bisphosphate, or PI(3,4)P2, a product of phosphoinositide 3-kinases (PI3K). Although PI3K enzymes have multiple functions in cell biology, including cell migration, the functions of PI (3, 4) P2 and its binding proteins are not well understood. Previously studies found that TAPP2 is highly expressed in primary leukemic B cells that have strong migratory capacity. However, the function and underlying mechanisms of TAPP2 in ESCC remain largely unknown...
September 12, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28977975/prognostic-clinicopathologic-factors-in-carcinoma-of-unknown-primary-origin-a-study-of-106-consecutive-cases
#4
Junjeong Choi, Ji Hae Nahm, Sang Kyum Kim
A heterogeneous group of cancers for which the site of origin remains occult after detailed investigations is defined as carcinomas of unknown primary origin (CUPs). Because patients with CUP have a dismal prognosis, we have analyzed CUPs to highlight the implication of clinicopathologic factors related with patient survival. A total of 106 consecutive cases of CUP were collected. A two-step strategy of immunohistochemistry to assess CUPs according NCCN Guidelines is used to separate carcinomatous tumors and subtype carcinomas...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28884137/hepatitis-b-virus-activates-signal-transducer-and-activator-of-transcription-3-supporting-hepatocyte-survival-and-virus-replication
#5
Marianna Hösel, Maria Quasdorff, Marc Ringelhan, Hamid Kashkar, Svenja Debey-Pascher, Martin F Sprinzl, Jan-Hendrik Bockmann, Silke Arzberger, Dennis Webb, Gesa von Olshausen, Achim Weber, Joachim L Schultze, Hildegard Büning, Mathias Heikenwalder, Ulrike Protzer
BACKGROUND & AIMS: The human hepatitis B virus (HBV) is a major cause of chronic hepatitis and hepatocellular carcinoma, but molecular mechanisms driving liver disease and carcinogenesis are largely unknown. We therefore studied cellular pathways altered by HBV infection. METHODS: We performed gene expression profiling of primary human hepatocytes infected with HBV and proved the results in HBV-replicating cell lines and human liver tissue using real-time polymerase chain reaction and Western blotting...
November 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28843751/thyroid-transcription-factor-1-promotes-lymph-node-metastasis-by-inducing-lymphangiogenesis-in-ovarian-carcinoma
#6
Minhua Li, Weiping Zheng, Jianguo Wei, Chuanling Hou, Ye Yang, Liping Sun, Cheng Wang
AIMS AND BACKGROUND: Thyroid transcription factor-1 (TTF-1) expression is widely considered a specific marker for lung and thyroid carcinomas and plays an important role in angiogenesis in lung cancer. However, it can occasionally be expressed in other malignancies, including ovarian carcinomas, and the mechanism of TTF-1 in lymphatic metastasis of ovarian carcinomas is still unclear. This study aimed to define the TTF-1 expression and lymph vessel density (LVD) in ovarian carcinomas and look for their correlations with clinicopathological features...
August 1, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28802095/the-diagnostic-utility-of-merkel-cell-polyomavirus-immunohistochemistry-in-a-fine-needle-aspirate-of-metastatic-merkel-cell-carcinoma-of-unknown-primary-to-the-pancreas
#7
Long Li, Kyle Molberg, Naga Cheedella, Joel Thibodeaux, Stacy Hinson, Elena Lucas
Merkel cell carcinoma (MCC) is an aggressive skin tumor with a high tendency for metastases. We report a case of MCC initially presenting as axillary and pancreatic metastases. A 33-year-old HIV-positive Hispanic male presented with a history of a rapidly growing axillary mass. A needle core biopsy demonstrated an epithelioid neoplasm composed of small to medium-sized cells with high nuclear-cytoplasmic ratio, nuclear molding, and frequent mitotic figures. A subsequent PET scan revealed a 1.5 cm FDG avid mass in the pancreas...
August 12, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28634564/pax8-distinguishes-diffuse-large-b-cell-lymphoma-mimicking-sarcoma
#8
Michelle S Hirsch, Alessandra F Nascimento
PAX8 is important for embryogenesis of the thyroid, Müllerian system, and upper urinary/renal tract, and expression of PAX8 has been described in carcinomas from each of these sites. The sensitivity and specificity of the polyclonal PAX8 antibody in a large cohort of epithelial tumors as well as lymphomas have been previously determined, the latter because polyclonal PAX8 is known to be immunoreactive in nonneoplastic B-cell lymphocytes which are often used as the positive internal control for immunohistochemistry...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28552827/metastatic-thyroid-carcinoma-without-identifiable-primary-tumor-within-the-thyroid-gland-a-retrospective-study-of-a-rare-phenomenon
#9
Bin Xu, Theresa Scognamiglio, Perry R Cohen, Manju L Prasad, Adnan Hasanovic, Robert Michael Tuttle, Nora Katabi, Ronald A Ghossein
Metastatic papillary thyroid carcinoma (PTC) without an identifiable primary tumor despite extensive microscopic examination of the thyroid gland is a rare but true phenomenon.We retrieved 7 of such cases and described in detail the clinical and pathologic features of these tumors. BRAF V600E immunohistochemistry and Sequenom molecular profile were conducted in selected cases. All patients harbored metastatic disease in the central (n=3), lateral (n=3), or both neck compartments (n=1). The histotype of the metastatic disease was PTC (n=5), poorly differentiated thyroid carcinoma in association with a PTC columnar variant (n=1), and anaplastic thyroid carcinoma in association with a PTC tall cell variant (n=1)...
July 2017: Human Pathology
https://www.readbyqxmd.com/read/28457039/carcinoma-of-unknown-primary-presenting-as-peripheral-symmetric-gangrene
#10
Abhenil Mittal, Sanchit Sharma, Vineet Govinda Gupta, R Ragesh, Neeraj Nischal, Ajay Gogia, Manish Soneja, Chandan J Das, S K Sharma
Cancer of unknown primary accounts for almost 4-5% of all invasive cancers and consists of tumors from various primary sources with considerable heterogeneity in biology and behaviour. Most of these tumors present with symptoms due to distant metastasis. Histology, immunohistochemistry and molecular profiling is the mainstay for diagnosis. In most cases of adenocarinoma associated with paraneoplastic acral vascular syndrome (PAVS), a site in the lung, ovary or uterus is discernible. Here we report a case of metastatic adenoarcinoma of unknown primary presenting as PAVS, a case which to the best of our knowledge has not been reported in published literature...
February 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28454329/overexpression-of-heat-shock-factor-1-is-associated-with-a-poor-prognosis-in-esophageal-squamous-cell-carcinoma
#11
Yukiko Tsukao, Makoto Yamasaki, Yasuhiro Miyazaki, Tomoki Makino, Tsuyoshi Takahashi, Yukinori Kurokawa, Hiroshi Miyata, Kiyokazu Nakajima, Shuji Takiguchi, Koshi Mimori, Masaki Mori, Yuichiro Doki
Heat-shock factor 1 (HSF1) is the primary regulator of the response to various stressors. A previous study showed that HSF1 expression is associated with a poor prognosis in breast cancer and hepatocellular carcinoma; however, the prognostic significance of HSF1 in esophageal squamous cell carcinoma (ESCC) is unknown. Therefore, the present study investigated the association between HSF1 expression and the clinicopathological parameters of patients, as well as the association between HSF1 expression, and heat shock protein (Hsp)27, Hsp70 and Hsp90 expression induced by HSF1, by cDNA microarray and immunohistochemistry analyses...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28440661/morphological-features-and-prognostic-significance-of-arid1a-deficient-esophageal-adenocarcinomas
#12
Michael G Drage, Mingkhwan Tippayawong, Agoston T Agoston, Yifan Zheng, Raphael Bueno, Jason L Hornick, Robert D Odze, Amitabh Srivastava
CONTEXT: - The clinicopathologic and prognostic significance of ARID1A mutation in esophageal adenocarcinoma (EAC) is unknown. OBJECTIVE: - To determine the morphological correlates and prognostic significance of ARID1A-deficient EAC. DESIGN: - One hundred twenty cases of primary EAC were evaluated for a predetermined set of histologic features and immunohistochemistry for ARID1A, p53, and MLH1 performed on EAC, as well as adjacent Barrett esophagus and Barrett esophagus-associated dysplasia, when feasible...
July 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28423684/prognostic-clinicopathologic-factors-in-carcinoma-of-unknown-primary-origin-a-study-of-106-consecutive-cases
#13
Junjeong Choi, Ji Hae Nahm, Sang Kyum Kim
A heterogeneous group of cancers for which the site of origin remains occult after detailed investigations is defined as carcinomas of unknown primary origin (CUPs). Because patients with CUP have a dismal prognosis, we have analyzed CUPs to highlight the implication of clinicopathologic factors related with patient survival. A total of 106 consecutive cases of CUP were collected. A two-step strategy of immunohistochemistry to assess CUPs according NCCN Guidelines is used to separate carcinomatous tumors and subtype carcinomas...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421464/a-novel-tp53-mutation-associated-with-twist1-and-sip1-expression-in-an-aggressive-adrenocortical-carcinoma
#14
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/28415703/bromodomain-protein-4-is-a-novel-predictor-of-survival-for-gastric-carcinoma
#15
Yixin Zhu, Weijin Yang, Guangnian Ji, Nan Lin, Weihang Wu, Ping Xiong, Chenxin Zheng, Lei Yan, Peng Wan, Yu Wang
Expression of bromodomain protein 4 (BRD4) has been reported to predict a worse prognosis in solid tumors. However, its expression profile and prognostic value in gastric carcinoma (GC) remains unknown. Here we investigated BRD4 expression in GC and explored its association with patient survival. Tissue samples were obtained from 95 GC patients who underwent surgical resection to remove the primary tumor from January 2009 to December 2010. Immunohistochemistry was used to detect the expression of BRD4 in GC tissues and adjacent normal tissues...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28391557/cutaneous-basal-cell-carcinoma-with-distant-metastasis-to-thorax-and-bone-a-clinicopathological-and-immunohistochemical-study-of-15-cases
#16
Annikka Weissferdt, Neda Kalhor, Cesar A Moran
Basal cell carcinoma (BCC) is the most common cutaneous malignancy and is characterized by a high cure rate after local excision. Metastatic BCC (mBCC) is an exceedingly rare event, associated with poor prognosis. We report clinicopathological and immunohistochemical features of 15 mBCC metastatic to the thorax and bone. The patients were 14 males and one female with a mean age at diagnosis of cutaneous BCC of 53 years and at metastasis of 64 years. Primary BCC were primarily located in the head and neck or torso and microscopically included five nodular, three basosquamous, three mixed, and one each of superficial, infiltrative, micronodular, and morpheaform types...
June 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28336434/vav1-expression-is-increased-in-esophageal-squamous-cell-carcinoma-and-indicates-poor-prognosis
#17
Xiaolei Zhu, Huan Jin, Ziwei Xia, Xianxian Wu, Mingjian Yang, Hongdian Zhang, Xiaobin Shang, Runfen Cheng, Zhongli Zhan, Zhentao Yu
Recently, Vav1 has been suggested to play an essential role in the progression of human cancers. However, the correlation between Vav1 expression and prognosis of esophageal squamous cell carcinoma (ESCC) is still unknown. The aim of this study was to investigate Vav1 expression and its prognostic value in ESCC. The expression of Vav1 was detected by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blotting in ESCC tissues and matched nontumorous tissues. Immunohistochemistry (IHC) was carried out to detect Vav1 expression in paraffin samples from 112 primary ESCC patients...
April 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28025080/expression-of-mtorc1-2-related-proteins-in-primary-and-brain-metastatic-lung-adenocarcinoma
#18
MULTICENTER STUDY
Ildikó Krencz, Anna Sebestyén, Katalin Fábián, Ágnes Márk, Judit Moldvay, András Khoor, László Kopper, Judit Pápay
Brain metastases (BMs) are common complications of adenocarcinomas (ADCs) of the lung and are associated with a poor prognosis. Although an increasing amount of data indicates that dysregulated activity of mammalian target of rapamycin (mTOR) can influence the metastatic potential of various tumors, the role of mTOR complexes in the development of BMs from ADCs of the lung is largely unknown. To estimate mTOR activity, we studied the expression of mTOR-related proteins (mTORC1: p-mTOR, p-S6; mTORC2: p-mTOR, Rictor) in primary (n=67) and brain metastatic (n=67) lung ADCs, including 15 paired tissue samples, using immunohistochemistry and tissue microarrays...
April 2017: Human Pathology
https://www.readbyqxmd.com/read/27927654/expression-of-sodium-dependent-dicarboxylate-transporter-1-nadc1-slc13a2-in-normal-and-neoplastic-human-kidney
#19
COMPARATIVE STUDY
Hyun-Wook Lee, Mary E Handlogten, Gunars Osis, William L Clapp, Dara N Wakefield, Jill W Verlander, I David Weiner
Regulated dicarboxylate transport is critical for acid-base homeostasis, prevention of calcium nephrolithiasis, regulation of collecting duct sodium chloride transport, and the regulation of blood pressure. Although luminal dicarboxylate reabsorption via NaDC1 (SLC13A2) is believed to be the primary mechanism regulating renal dicarboxylate transport, the specific localization of NaDC1 in the human kidney is currently unknown. This study's purpose was to determine NaDC1's expression in normal and neoplastic human kidneys...
March 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27894751/polymerase-%C3%AE%C2%B5-pole-ultra-mutation-in-uterine-tumors-correlates-with-t-lymphocyte-infiltration-and-increased-resistance-to-platinum-based-chemotherapy-in-vitro
#20
Stefania Bellone, Eliana Bignotti, Silvia Lonardi, Francesca Ferrari, Floriana Centritto, Alice Masserdotti, Francesca Pettinella, Jonathan Black, Gulden Menderes, Gary Altwerger, Pei Hui, Salvatore Lopez, Christopher de Haydu, Elena Bonazzoli, Federica Predolini, Luca Zammataro, Emiliano Cocco, Federico Ferrari, Antonella Ravaggi, Chiara Romani, Fabio Facchetti, Enrico Sartori, Franco E Odicino, Dan-Arin Silasi, Babak Litkouhi, Elena Ratner, Masoud Azodi, Peter E Schwartz, Alessandro D Santin
OBJECTIVE: Up to 12% of all endometrial-carcinomas (EC) harbor DNA-polymerase-ε-(POLE) mutations. It is currently unknown whether the favorable prognosis of POLE-mutated EC is derived from their low metastatic capability, extraordinary number of somatic mutations thus imparting immunogenicity, or a high sensitivity to chemotherapy. METHODS: Polymerase-chain-reaction-amplification and Sanger-sequencing were used to test for POLE exonuclease-domain-mutations (exons 9-14) 131 EC...
January 2017: Gynecologic Oncology
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