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Indeterminate cell tumor

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https://www.readbyqxmd.com/read/30078412/clinical-implications-of-clonal-hematopoiesis
#1
REVIEW
David P Steensma
Clonal hematopoiesis (CH)-an expansion of blood cells derived from a single hematopoietic stem cell-is a defining feature of hematologic cancers, but recently CH was also found to be a frequent consequence of aging. When aging-associated CH results from acquisition of a somatic mutation in a driver gene associated with leukemia, and this mutation is present at a variant allele frequency of at least 0.02 (2%) yet the patient does not meet World Health Organization diagnostic criteria for a hematologic neoplasm, this state is termed clonal hematopoiesis of indeterminate potential (CHIP)...
August 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29877893/indeterminate-dendritic-cell-tumor-a-report-of-2-new-cases-lacking-the-etv3-ncoa2-translocation-and-a-literature-review
#2
Jonathan J Davick, Jinah Kim, Mark R Wick, Alejandro A Gru
Indeterminate dendritic cell tumor (IDCT) is a cutaneous proliferation of histiocytes that share morphologic and immunophenotypic properties with Langerhans cells. IDCT was recently included in the updated WHO classification of tumors of hematopoietic and lymphoid tissues. Recent studies have shown that some cases of IDCT demonstrate an ETV3-NCOA2 translocation, supporting the idea that IDCT is a clonal neoplasm. We report 2 new cases of IDCT at our institution lacking the ETV3-NCOA2 translocation. We also present a comprehensive review of reported cases of IDCT in the medical literature...
May 31, 2018: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29873738/evaluating-circulating-tumor-dna-from-the-cerebrospinal-fluid-of-patients-with-melanoma-and-leptomeningeal-disease
#3
Leomar Y Ballester, Isabella C Glitza Oliva, Dzifa Y Douse, Melissa M Chen, Chieh Lan, Lauren E Haydu, Jason T Huse, Sinchita Roy-Chowdhuri, Rajyalakshmi Luthra, Ignacio I Wistuba, Michael A Davies
Circulating tumor DNA (ctDNA) refers to tumor-derived cell-free DNA that circulates in body fluids. Fluid samples are easier to collect than tumor tissue, and are amenable to serial collection at multiple time points during the course of a patient's illness. Studies have demonstrated the feasibility of performing mutation profiling from blood samples in cancer patients. However, detection of ctDNA in the blood of patients with brain tumors is suboptimal. Cerebrospinal fluid (CSF) can be obtained via lumbar puncture or intraventricular catheter, and may be a suitable fluid to assess ctDNA in patients with brain tumors...
July 1, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29719484/a-case-of-well-differentiated-hepatocellular-carcinoma-identified-on-gallium-68-prostate-specific-membrane-antigen-positron-emission-tomography-computed-tomography
#4
Hian Liang Huang, Tracy Jie Zhen Loh, Pierce Kah Hoe Chow
Prostate-specific membrane antigen (PSMA) is a glycosylated type-II transmembrane protein highly expressed in certain tumor cells. To the best of our knowledge, this is the first case reported of an isolated well-differentiated hepatocellular carcinoma (HCC) strongly suspected on gallium-68 (68 Ga)-PSMA positron emission tomography/computed tomography (PET/CT), which was not well characterized both on magnetic resonance imaging (MRI) liver with Primovist as well as fluorine-18 (18 F)-choline PET/CT. Our patient had previous prostate cancer and previously was imaged using 18 F-choline PET/CT...
April 2018: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29668296/ct-and-mri-of-small-renal-masses
#5
REVIEW
Zhen J Wang, Antonio C Westphalen, Ronald J Zagoria
Small renal masses are increasingly detected incidentally at imaging. They vary widely in histology and aggressiveness, and include benign renal tumors and renal cell carcinomas that can be either indolent or aggressive. Imaging plays a key role in the characterization of these small renal masses. While a confident diagnosis can be made in many cases, some renal masses are indeterminate at imaging and can present as diagnostic dilemmas for both the radiologists and the referring clinicians. This article will summarize the current evidence of imaging features that correlate with the biology of small solid renal masses, and discuss key approaches in imaging characterization of these masses using CT and MRI...
July 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29621879/recurrent-indeterminate-dendritic-cell-tumor-of-the-skin
#6
Jin Woo Joo, Taek Chung, Yoon Ah Cho, Sang Kyum Kim
Indeterminate dendritic cell tumor (IDCT) is a dendritic cell tumor that displays histologic features similar to those of Langerhans cells. The origin of the indeterminate cells may represent precursors of Langerhans cells or skin dendritic cells. IDCT is extremely rare, and tumor progression and predictive factors are not well known. Here, we report a case of a 61-year-old man who presented with a papule on his back and was finally diagnosed with IDCT based on histology and immunohistochemistry. The tumor recurred three months after surgical excision...
July 2018: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/29621658/the-incidence-of-occult-malignancy-following-uterine-morcellation-a-ten-year-single-institution-experience-retrospective-cohort-study
#7
Kristina M Mori, Lisa N Abaid, Alberto A Mendivil, John V Brown, Tiffany L Beck, John P Micha, Howard D Epstein, Bram H Goldstein
INTRODUCTION: When the Food and Drug Administration (FDA) initially reported on the parlous incidence (0.28%) of occult malignancy identified following uterine power morcellation, investigations thereafter documented their particular experience with this surgical procedure. Nevertheless, the precise risk of identifying a sarcoma following uterine morcellation remains indeterminate, primarily due to varying study patient risk factors, diagnostic criteria and operative approach. METHOD: We retrospectively evaluated subjects who underwent an endoscopic hysterectomy and uterine power morcellation for the treatment of a presumptive, benign indication from January 2006 until December 2015...
May 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29592892/gene-dosage-effect-of-cux1-in-a-murine-model-disrupts-hsc-homeostasis-and-controls-the-severity-and-mortality-of-mds
#8
Ningfei An, Saira Khan, Molly K Imgruet, Sandeep K Gurbuxani, Stephanie N Konecki, Michael R Burgess, Megan E McNerney
Monosomy 7 (-7) and del(7q) are high-risk cytogenetic abnormalities common in myeloid malignancies. We previously reported that CUX1 , a homeodomain-containing transcription factor encoded on 7q22, is frequently inactivated in myeloid neoplasms, and CUX1 myeloid tumor suppressor activity is conserved from humans to Drosophila. CUX1 -inactivating mutations are recurrent in clonal hematopoiesis of indeterminate potential as well as myeloid malignancies, in which they independently carry a poor prognosis. To determine the role for CUX1 in hematopoiesis, we generated 2 short hairpin RNA-based mouse models with ∼54% (Cux1mid ) or ∼12% (Cux1low ) residual CUX1 protein...
June 14, 2018: Blood
https://www.readbyqxmd.com/read/29462091/distinct-genomic-copy-number-alterations-distinguish-mucinous-tubular-and-spindle-cell-carcinoma-of-the-kidney-from-papillary-renal-cell-carcinoma-with-overlapping-histologic-features
#9
Qinghu Ren, Lu Wang, Hikmat A Al-Ahmadie, Samson W Fine, Anuradha Gopalan, Sahussapont J Sirintrapun, Satish K Tickoo, Victor E Reuter, Ying-Bei Chen
Mucinous tubular and spindle cell carcinoma (MTSCC) of the kidney is a rare type of renal cell carcinoma that frequently exhibits histologic and immunophenotypic features overlapping with type 1 papillary renal cell carcinoma (PRCC). To clarify molecular attributes that can be used for this difficult differential diagnosis, we sought to delineate the genome-wide copy number alterations in tumors displaying classic histologic features of MTSCC in comparison to the solid variant of type 1 PRCC and indeterminate cases with overlapping histologic features...
June 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29462024/characterization-of-small-renal-tumors-with-magnetic-resonance-elastography-a-feasibility-study
#10
Davide Prezzi, Radhouene Neji, Christian Kelly-Morland, Hema Verma, Tim OʼBrien, Ben Challacombe, Archana Fernando, Ashish Chandra, Ralph Sinkus, Vicky Goh
OBJECTIVES: The aim of this study was to explore the feasibility of magnetic resonance elastography (MRE) for characterizing indeterminate small renal tumors (SRTs) as part of a multiparametric magnetic resonance (MR) imaging protocol. MATERIALS AND METHODS: After institutional review board approval and informed consent were obtained, 21 prospective adults (15 men; median age, 55 years; age range, 25-72 years) with SRT were enrolled. Tumors (2-5 cm Ø) were imaged using 3-directional, gradient echo MRE...
June 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29372355/worth-a-second-look-outcomes-of-patients-with-initial-finding-of-regular-renal-tissue-in-ct-guided-renal-tumor-biopsies
#11
M Sadat-Khonsari, M Papayannis, P Schriefer, L Kluth, C Meyer, V Schüttfort, M Regier, M Rink, F Chun, M Fisch, A Becker
INTRODUCTION AND OBJECTIVE: Renal tumor biopsy is recommended for histological diagnosis of radiologically indeterminate renal masses, to select patients with small-renal masses for surveillance approaches, before ablative treatments and to confirm metastatic spread of renal cell cancer (RCC), according to the EAU guidelines. We aimed to determine outcomes of patients with suspicious renal masses with initial finding of regular renal tissue in renal tumor biopsies. METHODS: Retrospective database analysis of 101 patients undergoing CT-guided-, percutaneous renal tumor biopsies in local anesthesia...
May 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29345728/analytical-performance-of-the-thyroseq-v3-genomic-classifier-for-cancer-diagnosis-in-thyroid-nodules
#12
Marina N Nikiforova, Stephanie Mercurio, Abigail I Wald, Michelle Barbi de Moura, Keith Callenberg, Lucas Santana-Santos, William E Gooding, Linwah Yip, Robert L Ferris, Yuri E Nikiforov
BACKGROUND: Molecular tests have clinical utility for thyroid nodules with indeterminate fine-needle aspiration (FNA) cytology, although their performance requires further improvement. This study evaluated the analytical performance of the newly created ThyroSeq v3 test. METHODS: ThyroSeq v3 is a DNA- and RNA-based next-generation sequencing assay that analyzes 112 genes for a variety of genetic alterations, including point mutations, insertions/deletions, gene fusions, copy number alterations, and abnormal gene expression, and it uses a genomic classifier (GC) to separate malignant lesions from benign lesions...
April 15, 2018: Cancer
https://www.readbyqxmd.com/read/29300866/diagnostic-utility-of-molecular-and-imaging-biomarkers-in-cytological-indeterminate-thyroid-nodules
#13
Elizabeth J de Koster, Lioe-Fee de Geus-Oei, Olaf M Dekkers, Ilse van Engen-van Grunsven, Jaap Hamming, Eleonora P M Corssmit, Hans Morreau, Abbey Schepers, Jan Smit, Wim J G Oyen, Dennis Vriens
Indeterminate thyroid cytology (Bethesda III and IV) corresponds to follicular-patterned benign and malignant lesions, which are particularly difficult to differentiate on cytology alone. As ~25% of these nodules harbor malignancy, diagnostic hemithyroidectomy is still custom. However, advanced preoperative diagnostics are rapidly evolving.This review provides an overview of additional molecular and imaging diagnostics for indeterminate thyroid nodules in a preoperative clinical setting, including considerations regarding cost-effectiveness, availability, and feasibility of combining techniques...
April 1, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29163521/cd4-and-perivascular-foxp3-t-cells-in-glioma-correlate-with-angiogenesis-and-tumor-progression
#14
Luyan Mu, Changlin Yang, Qiang Gao, Yu Long, Haitao Ge, Gabriel DeLeon, Linchun Jin, Yifan Emily Chang, Elias J Sayour, Jingjing Ji, Jie Jiang, Paul S Kubilis, Jiping Qi, Yunhe Gu, Jiabin Wang, Yuwen Song, Duane A Mitchell, Zhiguo Lin, Jianping Huang
Background: Angiogenesis and immune cell infiltration are key features of gliomas and their manipulation of the microenvironment, but their prognostic significance remains indeterminate. We evaluate the interconnection between tumor-infiltrating lymphocyte (TIL) and tumor blood-vasculatures in the context of glioma progression. Methods: Paired tumor tissues of 44 patients from three tumor-recurrent groups: diffuse astrocytomas (DA) recurred as DA, DA recurred as glioblastomas (GBM), and GBM recurred as GBM were evaluated by genetic analysis, immunohistochemistry for tumor blood vessel density, TIL subsets, and clinical outcomes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29100380/circulating-tumor-cells-in-the-differential-diagnosis-of-adnexal-masses
#15
Dong Hoon Suh, Miseon Kim, Jin Young Choi, Jiyoon Bu, Yoon-Tae Kang, Byung Su Kwon, Banghyun Lee, Kidong Kim, Jae Hong No, Yong-Beom Kim, Young-Ho Cho
The aim of this study was to evaluate circulating tumor cell (CTC) detection in the differential diagnosis of adnexal masses. A total of 87 preoperative women with an indeterminate adnexal mass were prospectively enrolled. Preoperative diagnostic modalities including CTC detection, risk of ovarian malignancy algorithm, risk of malignancy index, and computed tomography or magnetic resonance imaging were compared. Forty-three (49.4%) benign tumors, 13 (14.9%) borderline malignant masses, and 31 (35.7%) cancers were pathologically confirmed...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29040711/diagnosis-and-outcome-of-biopsies-of-indeterminate-lesions-of-the-cavernous-sinus-and-meckel-s-cave-a-retrospective-case-series-in-85-patients
#16
Joshua D Hughes, Joseph Kapurch, Jamie J Van Gompel, Fredric B Meyer, Bruce E Pollock, John Atkinson, Michael J Link
BACKGROUND: When clinical presentation, laboratory studies, or imaging cannot diagnose cavernous sinus (CS) and/or Meckel's cave (MC) lesions, biopsy may be necessary. OBJECTIVE: To review our institutional series of biopsies of indeterminate CS and MC lesions. METHODS: Records from January 1994 to June 2016 were searched for biopsied indeterminate CS and MC lesions. We defined indeterminate as having an atypical imaging appearance or a broad differential and the need for tissue for definitive diagnosis...
October 11, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29031516/growth-of-adult-spinal-cord-in-knifefish-development-and-parametrization-of-a-distributed-model
#17
Iulian Ilieş, Rifat Sipahi, Günther K H Zupanc
The study of indeterminate-growing organisms such as teleost fish presents a unique opportunity for improving our understanding of central nervous tissue growth during adulthood. Integrating the existing experimental data associated with this process into a theoretical framework through mathematical or computational modeling provides further research avenues through sensitivity analysis and optimization. While this type of approach has been used extensively in investigations of tumor growth, wound healing, and bone regeneration, the development of nervous tissue has been rarely studied within a modeling framework...
January 21, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28982296/shear-wave-elastography-in-thyroid-nodules-with-indeterminate-cytology-results-of-a-prospective-bicentric-study
#18
MULTICENTER STUDY
Stéphane Bardet, Renaud Ciappuccini, Claire Pellot-Barakat, Hervé Monpeyssen, Jean-Jacques Michels, Frédérique Tissier, David Blanchard, Fabrice Menegaux, Dominique de Raucourt, Muriel Lefort, Yves Reznik, Agnès Rouxel, Natacha Heutte, Frédérique Brenac, Alexandra Leconte, Camille Buffet, Bénédicte Clarisse, Laurence Leenhardt
BACKGROUND: The clinical management of thyroid nodules with indeterminate cytology (IC) remains challenging. The role of shear wave elastography (SWE) in this setting is controversial. The aim of the study was to assess the performances of SWE in terms of prediction of malignancy, reproducibility, and combined analysis with ultrasound (US) examination in thyroid nodules with IC. METHODS: This prospective study was conducted in two referral centers. Eligible patients had a thyroid nodule ≥15 mm with IC (Bethesda class III-V) for which surgery had been recommended...
November 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28966519/aggressive-indeterminate-dendritic-cell-tumor-mimicking-scalp-angiosarcoma
#19
Yun Li, Ting-Ting Wang, Zi-Hui Zhang, Lin Wang
Indeterminate dendritic cell tumor (IDCT) is a proliferation of CD1a+, S100+ and langerin- histiocytes with a generally benign course. Here, we describe a case of a 90-year-old male who developed skin lesions on his scalp mimicking angiosarcoma and lymphadenopathy. He died six months after the onset of skin lesions despite of months' radiotherapy. Pathological examination ruled out scalp angiosarcoma and showed a high Ki-67 index. The appearance of skin lesions and lymphadenopathy led to challenges in diagnosis and the development of a treatment plan...
October 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28900880/characterizing-indeterminate-renal-masses-with-molecular-imaging-the-role-of-99m-tc-mibi-spect-ct
#20
REVIEW
Andrew M Reynolds, Kristin Kelly Porter
PURPOSE OF REVIEW: The majority of enhancing renal masses cannot be characterized through imaging as malignant or benign; however, such characterization could save patients from unnecessary surgery and/or biopsy and associated morbidity. Herein, we review the recent literature on the emerging use of 99m Tc-MIBI SPECT/CT in preoperative differentiation of enhancing renal masses. RECENT FINDINGS: Recent reports have shown that 99m Tc-MIBI SPECT/CT imaging can differentiate mitochondrial-rich, benign, or indolent renal masses from renal cell carcinoma...
September 12, 2017: Current Urology Reports
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