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https://www.readbyqxmd.com/read/28060142/the-importance-of-appendectomy-in-surgery-for-mucinous-adenocarcinoma-of-the-ovary
#1
Mikkel Rosendahl, Laura Amalie Haueberg Oester, Claus Kim Høgdall
OBJECTIVE: The aim of this study was to assess the importance of appendectomy during surgery for mucinous ovarian cancer. It can be difficult to distinguish between primary ovarian and primary appendiceal cancers clinically, histologically, and immunohistochemically. Removal of the appendix may facilitate differential diagnosis, improve staging, and possibly increase 5-year survival but may also be associated with increased postsurgical morbidity. In the largest population published to date, we analyze and discuss these matters...
January 4, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27994008/mesothelial-inclusion-cyst-a-rare-occurrence
#2
David Sc Soon, Hamish Shilton, Ali Andrabi
Mesothelial inclusion cyst is a rare benign tumour that has only 130 cases reported in the literature. Accurate diagnosis and optimal management of this condition remains uncertain. We report a 51-year-old African gentleman, whom presents with abdominal pain and constipation. A computed tomography scan was performed and revealed a large cystic lesion in the right paracolic gutter. The differential diagnosis included appendiceal mucinous neoplasm, cystic tuberculosis and duplication cyst. A laparotomy was performed due to his symptoms and size of the cyst...
December 18, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27982068/the-management-and-prognostic-prediction-of-adenocarcinoma-of-appendix
#3
Xin Xie, Zhangjian Zhou, Yongchun Song, Wenhan Li, Dongmei Diao, Chengxue Dang, Hao Zhang
Malignant tumours of the appendix are quite rare, especially appendiceal adenocarcinomas, which may be difficult to detect preoperatively or intraoperatively. We collected data for 1404 patients with adenocarcinoma of the appendix from the Surveillance, Epidemiology, and End Results Program (SEER) database to explore the potential associations between clinicopathological factors and overall survival. Furthermore, a novel nomogram for predicting prognosis was developed based on our analysis of the SEER data...
December 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27980743/incidentally-discovered-low-grade-appendiceal-mucinous-neoplasm-a-precursor-to-pseudomyxoma-peritonei
#4
Vennila Padmanaban, William F Morano, Elizabeth Gleeson, Anshu Aggarwal, Beth L Mapow, David E Stein, Wilbur B Bowne
Appendiceal mucoceles (AMs) infrequently arise from an underlying malignancy. Treatment has progressed toward a less aggressive approach over time; they can be managed by appendectomy-only unless pathology reveals malignancy. The ultimate goal of management is to prevent AM rupture, avoiding the syndrome of pseudomyxoma peritonei.
December 2016: Clinical Case Reports
https://www.readbyqxmd.com/read/27957365/corrigendum-to-diagnosis-and-treatment-of-mucinous-appendiceal-neoplasm-presented-as-acute-appendicitis
#5
Ioannis Kehagias, Apollon Zygomalas, Georgios Markopoulos, Thanasis Papandreou, Pantelis Kraniotis
[This corrects the article DOI: 10.1155/2016/2161952.].
2016: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/27938333/pseudomyxoma-peritonei-of-a-mature-ovarian-teratoma-caused-by-mismatch-repair-deficiency-in-a-patient-with-lynch-syndrome-a-case-report
#6
Yoshimasa Gohda, Rei Noguchi, Tomoko Horie, Toru Igari, Harumi Nakamura, Yasunori Ohta, Kiyoshi Yamaguchi, Tsuneo Ikenoue, Seira Hatakeyama, Nozomi Yusa, Yoichi Furukawa, Hideaki Yano
BACKGROUND: Pseudomyxoma peritonei (PMP) is a rare disease with an estimated incidence of 1-2 cases per million individuals per year. PMP is characterized by the accumulation of abundant mucinous or gelatinous fluid derived from disseminated tumorous cells. Most of the tumorous cells are originated from rupture of appendiceal neoplasms, but some are from the metastasis of cancer of the colon, ovary, fallopian tube, urachus, colorectum, gallbladder, stomach, pancreas, lung and breast. Although frequent mutations in KRAS and/or GNAS genes have been reported, precise molecular mechanism underlying PMP remains to be elucidated...
December 9, 2016: BMC Medical Genetics
https://www.readbyqxmd.com/read/27913947/preclinical-evaluation-of-cathepsin-based-fluorescent-imaging-system-for-cytoreductive-surgery
#7
Carlos H F Chan, Lukas F Liesenfeld, Isabel Ferreiro-Neira, James C Cusack
BACKGROUND: Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) is a treatment option for peritoneal surface malignancies. The ability to detect microscopic foci of peritoneal metastasis intraoperatively may ensure the completeness of cytoreduction. In this study, we evaluated the suitability of a hand-held cathepsin-based fluorescent imaging system for intraoperative detection of appendiceal and colorectal peritoneal metastasis. METHODS: Peritoneal tumors and normal peritoneal tissues were collected from patients with appendiceal and colorectal peritoneal metastasis...
December 2, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27913053/intestinal-metaplasia-of-appendiceal-endometriosis-is-not-uncommon-and-may-mimic-appendiceal-mucinous-neoplasm
#8
Monika Vyas, Serena Wong, Xuchen Zhang
Endometriosis of the appendix can be an incidental finding or a cause of appendicitis, intussusception, perforation or retention mucocele. Intestinal metaplasia of appendiceal endometriosis may occur, which can lead to a misdiagnosis of low-grade appendiceal mucinous neoplasm. On a retrospective search of the pathology database from 2001 to 2015, we identified 78 appendiceal endometriosis cases and intestinal metaplasia was present in 10/78 (13%) cases. In most of the cases (90%), the foci of intestinal metaplasia were mainly localized close to the mucosa...
January 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27889016/is-it-necessary-to-perform-routine-appendectomy-for-mucinous-ovarian-neoplasms-a-retrospective-study-and-meta-analysis
#9
REVIEW
Aoshuang Cheng, Minghao Li, Margaux J Kanis, Ying Xu, Qing Zhang, Baoxia Cui, Jie Jiang, YouZhong Zhang, Xingsheng Yang, Beihua Kong
OBJECTIVES: To evaluate whether routine appendectomy is necessary in all patients with mucinous borderline ovarian tumor (mBOT) or mucinous ovarian cancer (MOC) who undergo gynecologic surgery. METHODS: The database of Qilu Hospital was searched for women who underwent appendectomy in a primary surgery for an ovarian tumor between June 2005 and June 2015 and whose final diagnosis was mBOT, MOC or primary appendiceal tumor. A retrospective review was performed, as well as a meta-analysis of the literature to further validate the findings...
January 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/27870702/synchronous-ovarian-and-appendiceal-mucinous-neoplasms-in-the-absence-of-pseudomyxoma-peritonei
#10
Xianyong Gui, Jorge Escobar, Cheng-Han Lee, Máire A Duggan, Martin Köbel
BACKGROUND: Synchronous ovarian/appendiceal mucinous neoplasms sometimes occur in the absence of clinical pseudomyxoma peritonei (PMP), which raises a question about whether the 2 tumors could be independent. METHODS: We identified 11 cases of synchronous ovarian/appendiceal mucinous neoplasms without PMP and subclassified them into groups 1 and 2 based on the presence or absence of microscopic peritoneal/ovarian surface mucin deposits. A 7-marker panel (CK7, CK20, CDX2, PAX8, MUC1, MUC2, and MUC5AC) immunohistochemistry was performed on both tumors...
November 17, 2016: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27858376/a-case-of-adenocarcinoma-arising-in-an-ileal-diverticulum-resected-by-laparoscopic-surgery
#11
Ryo Ikeshima, Junichi Nishimura, Hidekazu Takahashi, Naotsugu Haraguchi, Taishi Hata, Tsunekazu Mizushima, Yuichiro Doki, Masaki Mori
Adenocarcinoma arising in an ileal diverticulum are very rare. A 66-year-old man was recognized to have high serum CEA level and periappendiceal polycystic tumor in CT findings. Colonoscopy showed no abnormality in the ileocecal mucosa. However, the patient was suspected of appendiceal adenocarcinoma by PET/CT, which revealed FDG uptake with SUVmax of 3.9 in the tumor, and underwent radial surgery by single-incision laparoscopic surgery. Intraoperative findings showed the mass in the mesenterium of the terminal ileum but not the abnormality of the appendix...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27843660/low-grade-appendiceal-mucinous-neoplasm-involving-the-endometrium-and-presenting-with-mucinous-vaginal-discharge
#12
Vera Vavinskaya, Joel M Baumgartner, Albert Ko, Cheryl C Saenz, Mark A Valasek
Primary appendiceal mucinous lesions are uncommon and represent a spectrum from nonneoplastic mucous retention cysts to invasive adenocarcinoma. Low-grade appendiceal mucinous neoplasms (LAMNs) represent an intermediate category on this spectrum and can be classified according to whether or not they are confined to the appendix. Although LAMNs are frequently confined to the appendix, they can also spread to the peritoneum and clinically progress as pseudomyxoma peritonei (i.e., mucinous ascites). Thus, the appropriate classification of appendiceal primary neoplasia is essential for prognosis and influences clinical management...
2016: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27835997/adenocarcinoma-mimicking-appendicular-lump-a-diagnostic-dilemma-a-case-report
#13
Sanket Kalpande, Jayashri Pandya, Tushar Sharma
BACKGROUND: Primary appendiceal adenocarcinoma is a rare tumor, mucinous variety being common. This case is reported to highlight the unusual presentation and diagnostic difficulty of appendiceal adenocarcinoma. CASE PRESENTATION: Patient presented with acute appendicitis with ill-defined tender lump which responded to conservative management. CONCLUSIONS: High index of suspicion should be kept in mind for elderly patients presenting with appendicular lump...
November 11, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27822629/ultimate-clinical-outcomes-of-appendiceal-mucinous-neoplasm-of-uncertain-malignant-potential
#14
Rumi Shin, Young Jun Chai, Ji Won Park, Mee Soo Chang, Jeong Mo Bae, Min Jung Kim, Byung Kwan Park, Kyu Joo Park, Seung-Yong Jeong
BACKGROUND: The clinical outcome of appendiceal mucinous neoplasm (AMN) is not well understood. This study aimed to compare the long-term outcome for the uncertain malignant potential (UMP) subtype of AMNs with those of the mucinous adenoma (MA) and mucinous adenocarcinoma (MAC) subtypes. METHODS: In this study, AMNs were classified into three groups (MA, UMP, and MAC), and clinical characteristics, overall survival (OS), and progression-free survival (PFS) were compared among the three groups...
November 7, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27784975/limited-local-extracolonic-spread-of-mucinous-appendiceal-adenocarcinoma-after-perforation-with-formation-of-a-malignant-appendix-to-sigmoid-fistula-case-report-and-literature-review
#15
Seifeldin Hakim, Mitual Amin, Mitchell S Cappell
A 68-year-old man presented with progressive right lower quadrant abdominal pain and tenderness without rebound tenderness, and with constipation during the prior 9 mo. Abdomino-pelvic computed tomography and magnetic resonance imaging demonstrated a dilated appendix forming a fistula to the sigmoid colon. Open laparotomy revealed a bulky abdominal tumor involving appendix, cecum, and sigmoid, and extending up to adjacent viscera, without ascites or peritoneal implants. The abdominal mass was removed en bloc, including resection of sigmoid colon, cecum (with preservation of ileocecal valve), appendix, right vas deferens, testicular vessels, and minimal amounts of anterior abdominal wall; and shaving off of small parts of the walls of the urinary bladder and small bowel...
October 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27770344/when-and-when-not-to-perform-a-right-colon-resection-with-mucinous-appendiceal-neoplasms
#16
Paul H Sugarbaker
BACKGROUND: Mucinous appendiceal neoplasms (MAN) with peritoneal dissemination is treated as a standard of care using cytoreductive surgery and hyperthermic perioperative chemotherapy. The extent of the resection of peritoneal surfaces and visceral structures is generally well defined. Exception to this consensus regarding structures to be removed are the right colon and adjacent ileocolic lymph nodes. METHODS: From a prospectively maintained database, all patients with a histologic diagnosis of peritoneal mucinous carcinoma (PMCA) who underwent complete cytoreductive surgery were assessed for the presence versus absence of adenocarcinoma in lymph nodes within the appendiceal mesentery and/or in the lymph nodes of the ileocolic group...
October 21, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27718032/early-postoperative-intraperitoneal-chemotherapy-for-low-grade-appendiceal-mucinous-neoplasms-with-pseudomyxoma-peritonei-is-it-beneficial
#17
Yeqian Huang, Nayef A Alzahrani, Winston Liauw, Thamer B Traiki, David L Morris
BACKGROUND: There is little evidence for the use of early postoperative intraperitoneal chemotherapy (EPIC) in patients with low-grade appendiceal mucinous neoplasms (LAMNs) with pseudomyxoma peritonei (PMP). This study aims to assess the outcomes regarding the use of EPIC in a large cohort of patients with LAMNs with PMP uniformly treated by cytoreductive surgery (CRS) and perioperative intraperitoneal chemotherapy (PIC), all of whom received hyperthermic intraperitoneal chemotherapy (HIPEC), and most of whom also received EPIC...
January 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27712976/a-rare-low-grade-appendiceal-mucinous-neoplasm-pseudomyxoma-peritonei-with-ossification-a-case-report-with-morphoproteomic-analysis-of-bone-formation
#18
Byeong-Joo Noh, Youn Wha Kim, Yong-Koo Park
Heterotopic ossification occurring to low-grade appendiceal mucinous neoplasm (LAMN) (pseudomyxoma peritonei) is extremely rare. The pathogenetic mechanism of the tumor-related heterotopic bone formation remains as yet unconfirmed. Here, we describe a rare case of LAMN with ossification in a 72-year-old woman, and concentrate on the etiology of heterotopic ossification by the immunohistochemical evaluation of the novel markers such as BMP9, osteocalcin, and osteopontin. BMP9 is one of the most effective osteogenetic proteins...
November 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27684884/synchronous-low-grade-appendiceal-mucinous-neoplasm-and-primary-peritoneal-low-grade-serous-carcinoma-a-first-description-of-these-2-neoplasms-presenting-together-as-suspected-peritoneal-carcinomatosis
#19
Miroslav Sekulic, Simona Pichler Sekulic, Saeid Movahedi-Lankarani
Low-grade appendiceal mucinous neoplasm is a neoplasm typically of appendiceal origin, which is characterized by diffuse peritoneal involvement by pools of mucin with mucinous epithelium lacking high-grade cytologic atypia, and clinically presents as suspected peritoneal carcinomatosis. A similar clinical presentation can sometimes be seen with disseminated low-grade serous carcinomas of the peritoneum, fallopian tubes, or ovaries; however, this neoplasm is histologically characterized by tubal-type epithelium and invasive or confluent growth...
September 28, 2016: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/27660258/low-grade-appendiceal-mucinous-neoplasm-of-uncertain-malignant-potential-lamn-ump-prognostic-factors-and-implications-for-treatment-and-follow-up
#20
Keith Fournier, Safia Rafeeq, Melissa Taggart, Paul Kanaby, Jing Ning, Hsiang-Chun Chen, Michael Overman, Kanwal Raghav, Cathy Eng, Paul Mansfield, Richard Royal
BACKGROUND: Low-grade appendiceal mucinous neoplasm of uncertain malignant potential are poorly understood lesions characterized by extraluminal mucin or fibrosis with neoplastic cells confined to the appendiceal lumen. The purpose of this study is to investigate the clinical and pathologic parameters of these lesions to optimize our understanding and management of these tumors. METHODS: Subjects with these tumors were identified from the appendiceal tumor databases at the University of Texas MD Anderson Cancer Center...
January 2017: Annals of Surgical Oncology
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