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https://www.readbyqxmd.com/read/29410139/significance-of-microcystic-elongated-and-fragmented-glandular-like-features-in-intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#1
Ji Y Park, Jae Hoon Lee, Ki-Byung Song, Dae Wook Hwang, Kyu-Rae Kim, Song Cheol Kim, Seung-Mo Hong
Microcystic, elongated, and fragmented (MELF) glandular features are associated with epithelial-mesenchymal transition, invasion, and progression in endometrioid adenocarcinoma of the uterus. Similar histological features are also observed at the periphery of pancreatic intraductal papillary mucinous neoplasms (IPMNs). However, the clinicopathological significance of MELF-like features-particularly whether they represent regenerative or truly neoplastic conditions-in IPMNs remains unclear. We assessed a total of 152 surgically resected IPMNs...
February 1, 2018: Human Pathology
https://www.readbyqxmd.com/read/29369342/case-report-of-endometrial-cancer-with-a-microcytic-elongated-and-fragmented-pattern-of-invasion-and-dna-mismatch-repair-deficiency
#2
Janhvi Sookram, Julieta E Barroeta, James K Aikins
Uterine risk factors, such as tumor size and grade, depth of myometrial invasion, cervical stromal involvement, and lympho-vascular space invasion are predictive of outcomes in early-stage endometrial cancers and guide therapeutic decisions. A microcytic, elongated, and fragmented (MELF) pattern of invasion has also been implicated in poor patient prognoses, given the aggressive potential of tumors with this morphology for lympho-vascular space invasion and nodal metastases [1, 2]. Similarly, Lynch-related DNA mismatch repair protein expression has been utilized increasingly and an association between microsatellite instability and worsening survival outcomes in endometrial cancers has been demonstrated [3]...
January 25, 2018: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29079180/mixed-endometrial-carcinomas-with-a-low-grade-serous-like-component-a-clinicopathologic-immunohistochemical-and-molecular-genetic-study
#3
Iñigo Espinosa, Emanuela D'Angelo, Marina Corominas, Alan Gonzalez, Jaime Prat
Recently, we reported 2 mixed endometrioid endometrial carcinomas with a low-grade serous-like component which doesn't fit into any of the 4 molecular groups described by The Cancer Genome Atlas (TCGA). In order to understand the nature of these tumors, we have done an immunohistochemical and molecular genetic study of these two cases and added a third case. Immunoreactivity for p53, ER, Ki67, WT1, MLH1, PMS2, MSH2, and MSH6 were assessed. Targeted next-generation sequencing for somatic mutations, including genes commonly implicated in carcinogenesis including TP53, KRAS, and PIK3CA, and Sanger sequencing for PTEN and POLE were also performed...
October 24, 2017: Human Pathology
https://www.readbyqxmd.com/read/29061125/whether-intermediate-risk-stage-1a-grade-1-2-endometrioid-endometrial-cancer-patients-with-lesions-larger-than-2%C3%A2-cm-warrant-lymph-node-dissection
#4
Menghan Zhu, Nan Jia, Feifei Huang, Xiaoxia Liu, Yuqing Zhao, Xiang Tao, Wei Jiang, Qin Li, Weiwei Feng
BACKGROUND: Our research aimed to investigate whether lymphadenectomy was required in patients with intermediate-risk endometrioid endometrial cancer (EEC). METHODS: Between 1989 and 2015, 1009 patients with intermediate-risk EEC: grade 1 or 2 tumor, <50% myometrial invasion, and a tumor diameter ≥ 2 cm and 818 low-risk patients with grade 1 or 2 tumor, <50% myometrial invasion, and a tumor diameter < 2 cm were enrolled in this study. The rate and risk factors of node metastasis were evaluated and compared between the two risk groups...
October 23, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28990139/association-between-morphological-patterns-of-myometrial-invasion-and-cancer-stem-cell-markers-in-endometrial-endometrioid-carcinoma
#5
Ji Y Park, Daegy Hong, Ji Young Park
In endometrial endometrioid adenocarcinoma (EEC), the depth of myometrial invasion (MI) is an important parameter for determining whether additional treatment is warranted. The present study investigated the association between MI patterns, cancer stem cell (CSC) phenotypes, and their clinicopathological significance in EEC. A total of 73 cases of EEC with MI were examined in this study. Haematoxylin and eosin-stained tissue specimens were analysed for MI pattern, which was categorised as infiltrating; expansile; adenomyosis (AM)-like; or microcystic, elongated, and fragmented (MELF)-type...
October 8, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28934825/the-potential-roles-of-melf-pattern-microvessel-density-and-vegf-expression-in-survival-of-patients-with-endometrioid-endometrial-carcinoma-a-morphometrical-and-immunohistochemical-analysis-of-100-cases
#6
Dmitry Aleksandrovich Zinovkin, Md Zahidul Islam Pranjol, Daniil Rudolfovich Petrenyov, Eldar Arkadievich Nadyrov, Oleg Gennadievich Savchenko
BACKGROUND: In this study, we hypothesized that microcystic, elongated, fragmented (MELF)-pattern, vascular endothelial growth factor (VEGF) expression by cancer cells and microvessel density of cancer stroma may be associated with progression of endometrioid adenocarcinoma. METHODS: The study used data from the Belarus Cancer Registry and archival histological material of 100 patients with retrospectively known good (survival) and poor (disease progression and death) outcomes...
September 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28890428/microcystic-elongated-and-fragmented-pattern-of-invasion-in-relation-to-histopathologic-and-clinical-prognostic-factors-in-endometrioid-endometrial-adenocarcinoma
#7
M Murat Naki, Gülbin Oran, Seza Ümit Tetikkurt, Cavide Fatma Sönmez, İlknur Türkmen, Faruk Köse
OBJECTIVE: To investigate the association of microcystic, elongated, and fragmented (MELF) pattern of invasion with prognostic factors in endometrioid endometrial adenocarcinoma (EEA). MATERIAL AND METHODS: Stained tissue sections from 83 cases of EEA operated by the same gynecologic oncologist were reviewed to identify cases showing MELF-type invasion in this retrospective study. The association of MELF pattern with age, tumor grade, depth of myometrial invasion, and presence of lymphovascular space invasion (LVSI) was analyzed...
September 1, 2017: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/28873466/rational-design-of-drug-like-compounds-targeting-mycobacterium-marinum-melf-protein
#8
Renu Dharra, Sakshi Talwar, Yogesh Singh, Rani Gupta, Jeffrey D Cirillo, Amit K Pandey, Mahesh Kulharia, Promod K Mehta
The mycobacterial mel2 locus (mycobacterial enhanced infection locus, Rv1936-1941) is Mycobacterium marinum and M. tuberculosis specific, which can withstand reactive oxygen species (ROS) and reactive nitrogen species (RNS) induced stress. A library of over a million compounds was screened using in silico virtual ligand screening (VLS) to identify inhibitors against the modeled structure of MelF protein expressed by melF of mel2 locus so that M. marinum's ability to withstand ROS/RNS stress could be reduced...
2017: PloS One
https://www.readbyqxmd.com/read/28710714/disseminated-tumor-cells-are-not-associated-with-established-risk-factors-l1cam-immunoreactivity-and-outcome-in-endometrial-carcinoma
#9
Stefan Kommoss, Andreas D Hartkopf, Bernhard Krämer, Anne-Kathrin Bunz, Friederike Grevenkamp, Felix Kommoss, Jana Pasternak, Sabine M Arbabi, Markus Wallwiener, Annette Staebler, Sigurd F Lax, Sara Y Brucker, Florin-Andrei Taran
PURPOSE: The presence of disseminated tumor cells (DTC) in the bone marrow of endometrial carcinoma patients has been demonstrated previously. In contrast to breast cancer, no prognostic significance or association with clinicopathological features was revealed for endometrial carcinoma so far. The aim of this study was to investigate DTC in a large patient cohort with in-depth pathology review data available and to study DTC occurrence in the context of L1CAM and long-term disease specific follow-up...
November 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28614200/priority-for-description-of-the-melf-pattern-of-myoinvasive-endometrioid-carcinoma
#10
Shawn K Murray, Robert H Young
No abstract text is available yet for this article.
August 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28601659/endometrioid-endometrial-carcinomas-with-melf-type-of-myoinvasion-role-of-immunohistochemistry-in-the-detection-of-occult-lymph-node-metastases-and-their-clinical-significance
#11
Iñigo Espinosa, Neus Serrat, Gian Franco Zannoni, Ramón Rovira, Emanuela D'Angelo, Jaime Prat
In endometrioid endometrial carcinomas (EEC), MELF (microcystic, elongated and fragmented) myoinvasion is associated with easily overlooked lymph node metastases; however, the role of immunohistochemistry in their detection and their clinical significance have not been addressed. We identified MELF in 43 of 101 (43%) myoinvasive EECs. Nodes were removed in 49 (49%), 25 with MELF and 24 without MELF. Metastases were initially reported in 3 of the former (12%) and 2 of the latter (8%). All negative nodes were reviewed and cytokeratin immunohistochemistry was performed...
June 7, 2017: Human Pathology
https://www.readbyqxmd.com/read/28498288/priority-for-description-of-the-melf-pattern-of-myoinvasive-endometrioid-carcinoma
#12
Adrian A Suarez, Amy S Joehlin-Price
No abstract text is available yet for this article.
May 11, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28468037/-microcystic-elongated-and-fragmented-invasive-pattern-in-endometrial-adenocarcinoma-a-clinicopathologic-analysis-of-72-cases
#13
D Hu, H J Zhang, W C Shen, W F Zhu, L Li, X D Lin, J P Lu, X W Zheng, C Wang, X R Zhou
Objective: To investigate the clinicopathologic features of microcystic, elongated and fragmented (MELF) pattern invasion of endometrial adenocarcinoma. Methods: HE and immunohistochemistry staining method were used to analysis morphologic features and immunophenotype of 72 patients of endometrial adenocarcinoma with MELF pattern invasion, and chi-square test was used to analysis the clinicopathologic features. Results: The mean age of 72 patients was 54 years (40 to 70 years). Thirty-two patients were pre-menopausal and 40 were post-menopausal...
May 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28418994/clinicopathologic-association-and-prognostic-value-of-microcystic-elongated-and-fragmented-melf-pattern-in-endometrial-endometrioid-carcinoma
#14
Atsushi Kihara, Hiroshi Yoshida, Reiko Watanabe, Kenta Takahashi, Tomoyasu Kato, Yoshinori Ino, Masanobu Kitagawa, Nobuyoshi Hiraoka
Microcystic, elongated, and fragmented (MELF) pattern is seen in the invasive front of some endometrial endometrioid carcinomas. Although MELF pattern can be expected as an indicator of patient outcomes, its prognostic significance remains unclear. This study was conducted to elucidate clinicopathologic features and the prognostic impact of MELF pattern in patients with endometrial endometrioid carcinoma. We retrospectively analyzed data of 479 consecutive patients with endometrial endometrioid carcinoma that had been surgically resected...
July 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28319574/melf-pattern-for-predicting-lymph-node-involvement-and-survival-in-grade-i-ii-endometrioid-type-endometrial-cancer
#15
Muzaffer Sanci, Kemal Güngördük, Varol Gülseren, Tuğba Karadeniz, Mustafa Kocaer, Ozgu Gungorduk, İsa A Özdemir
The aim of this study was to examine the associations between microcystic, elongated, and fragmented (MELF) pattern and other prognostic factors and lymph node involvement, disease-free survival, and overall survival (OS) using a case-control group consisting of grade I-II endometrioid endometrial carcinoma (EEC) patients with/without lymph node involvement. The files of the patients were searched electronically for all hysterectomy specimens with a diagnosis of grade I-II EEC of the uterine body from January 1, 2008 to July 31, 2014...
January 2018: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28319570/microcystic-elongated-and-fragmented-pattern-invasion-in-ovarian-endometrioid-carcinoma-immunohistochemical-profile-and-prognostic-implications
#16
Allison Goldberg, Lauren Hand, Dan DeCotiis, Norman Rosenblum, Joanna Chan
Microcystic, elongated, and fragmented (MELF) pattern invasion is a poor prognostic indicator in uterine endometrioid carcinoma, but its existence, biology, and prognostic value have not been described in ovarian endometrioid carcinoma. We evaluated cases of ovarian endometrioid carcinoma without synchronous uterine endometrioid carcinoma for MELF and other histologic features. To evaluate tumor biology, we assessed an immunohistochemical profile, including MLH1, PMS2, MSH2, MSH6, β-catenin, e-cadherin, CK19, and cyclin D1...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28277316/cxcl14-cxcr4-and-cxcl12-cxcr4-axes-may-play-important-roles-in-the-unique-invasion-process-of-endometrioid-carcinoma-with-melf-pattern-myoinvasion
#17
Sakiko Kojiro-Sanada, Kaori Yasuda, Shin Nishio, Sachiko Ogasawara, Jun Akiba, Kimio Ushijima, Hirohisa Yano
The term "MELF-pattern myometrial invasion" (MELF pattern) denotes an unusual morphology of myometrial invasion in endometrioid carcinomas, and is associated with frequent lymphovascular invasion and lymph node metastasis. In this study, tumor cells were directly collected from a MELF pattern site, using laser microdissection. Comprehensive microarray analysis of the genes was conducted, and based on the results, expression of a metastasis progression gene, CXCR4, and its ligands CXCL14 and CXCL12, was further investigated...
November 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/27864117/microcystic-elongated-and-fragmented-pattern-invasion-is-mainly-associated-with-isolated-tumor-cell-pattern-metastases-in-international-federation-of-gynecology-and-obstetrics-grade-i-endometrioid-endometrial-cancer
#18
Mathieu P Pelletier, Vincent Q Trinh, Philippe Stephenson, Anne-Marie Mes-Masson, Vanessa Samouelian, Diane M Provencher, Kurosh Rahimi
Although many studies have evaluated the impact of mismatch repair protein loss of expression (MMR LOE) or microcystic, elongated, and fragmented (MELF) pattern of myometrial invasion as individual factors in endometrial cancer, we analyzed the combined impact of both. We reviewed every case of International Federation of Gynecology and Obstetrics (FIGO) grade 1 endometrioid endometrial cancers (EECs) from our institution, between 2011 and 2015, that had a sentinel lymph node biopsy and/or a lymphadenectomy, and examined the following data: age, myometrial infiltration, MELF infiltration, lymphovascular space invasion, and lymph node status...
April 2017: Human Pathology
https://www.readbyqxmd.com/read/27757531/-metastatic-mechanisms-of-uterine-malignancies-and-therapeutic-consequences
#19
REVIEW
S F Lax, K F Tamussino, P F Lang
Malignancies of the uterus metastasize by direct invasion of neighboring structures, lymphatically or hematogenously. Endometrial and cervical cancers lymphatically spread to the pelvic and para-aortic lymph nodes. For endometrial cancer the depth of myometrial invasion, lymphosvascular space involvement (LVSI) and a microcystic, elongated and fragmented (MELF) glandular invasion pattern are predictors for lymph node metastases. Metastases to the pelvic lymph nodes occur in approximately 10 % of endometrial cancer patients and in 30 % of these cases the para-aortic lymph nodes are also involved...
November 2016: Der Pathologe
https://www.readbyqxmd.com/read/27740968/the-microcystic-elongated-and-fragmented-melf-pattern-of-invasion-a-single-institution-report-of-464-consecutive-figo-grade-1-endometrial-endometrioid-adenocarcinomas
#20
Amy S Joehlin-Price, Kelsey E McHugh, Julie A Stephens, Zaibo Li, Floor J Backes, David E Cohn, David W Cohen, Adrian A Suarez
MELF invasion has been associated with nonvaginal recurrences and lymph node (LN) metastases in multi-institutional case control studies but has not been well examined in large single-institution cohorts. Hysterectomy specimens with FIGO 1 endometrioid endometrial carcinoma and lymphadenectomies from 2007 to 2012 were identified. Electronic medical records and histologic slides were reviewed. Of 464 identified cases, 163 (35.1%) were noninvasive, 60 (12.9%) had MELF, 222 (47.8%) had a component of the infiltrative invasion pattern without MELF, 13 (2...
January 2017: American Journal of Surgical Pathology
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