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Pseudomyxoma Peritonei

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https://www.readbyqxmd.com/read/28526814/kras-and-gnas-co-mutation-in-metastatic-low-grade-appendiceal-mucinous-neoplasm-lamn-to-the-ovaries-a-practical-role-for-next-generation-sequencing
#1
Daniel R Matson, Jin Xu, Laura Huffman, Lisa Barroilhet, Molly Accola, William M Rehrauer, Paul Weisman
BACKGROUND Low-grade appendiceal mucinous neoplasms (LAMNs) are cytologically low-grade tumors of the appendix and are a frequent cause of pseudomyxoma peritonei. They can become a diagnostic challenge when they metastasize to the ovaries, where they may mimic primary ovarian mucinous tumors. CASE REPORT We report the case of a patient with very large bilateral ovarian mucinous tumors and a concurrent minute LAMN incidentally discovered in a grossly normal appendix. A primary ovarian tumor was suspected, but histological analysis of the ovaries suggested an appendiceal origin...
May 20, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28474197/computed-tomography-follow-up-assessment-of-patients-with-low-grade-appendiceal-mucinous-neoplasms-evaluation-of-risk-for-pseudomyxoma-peritonei
#2
Catarina Tiselius, Csaba Kindler, Jayant Shetye, Henry Letocha, Kenneth Smedh
BACKGROUND: Low-grade appendiceal mucinous neoplasms are rare. Both classification and management vary. This study aimed to follow up on patients with a diagnosis of LAMN after primary surgery with computer tomography (CT) scans to examine the risk for the development of pseudomyxoma peritonei (PMP). METHODS: This population-based prospective study investigated patients who underwent appendectomy between 2007 and 2013 and had histology results demonstrating the presence of LAMN...
May 4, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28449607/adenocarcinoma-ex-goblet-cell-carcinoid-of-the-appendix-with-metastatic-peritoneal-spread-to-meckel-s-diverticulum-and-endometriosis
#3
Brett Matthew Lowenthal, Grace Y Lin, Ann M Ponsford Tipps, Mojgan Hosseini
Adenocarcinoma ex-goblet cell carcinoid is a very rare and histologically unique appendiceal malignancy with dual glandular and neuroendocrine differentiation. There is a high incidence of this tumor among middle-aged women with metastasis to the gynecologic tract with the mode of metastasis following peritoneal spread rather than hematogenous distribution. Adenocarcinoma ex-goblet cell carcinoid can spread to any peritoneal site including ovaries or omentum. We report a 37-year-old healthy woman who initially presented with right lower quadrant abdominal pain and pseudomyxoma peritonei...
April 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28449606/pseudomyxoma-peritonei-as-a-first-manifestation-of-kras-mutated-urachal-mucinous-cystadenocarcinoma-of-the-bladder-a-case-report
#4
Ksenya V Shelekhova, Alexander S Zhuravlev, Daria D Krylova, Alexey S Konstantinov, Lidia V Shtan, Valeriia A Kheinshtein
Only 28 cases of pseudomyxoma peritonei (PMP) arising from urachal neoplasms have been reported. We report one example of this extremely rare disease with KRAS mutational status in its spectrum of pathology. A 45-year-old woman presented with urachal frankly invasive mucinous cystadenocarcinoma confined to the dome of the bladder, which clinically manifested as PMP and was not detected at the first surgery. The primary tumour was revealed 6 months later because of its recurrence as PMP. Microscopic investigation revealed tubular adenoma and cystadenocarcinoma communicating with the bladder lumen and transitioning from the urachal urothelium to the mucinous epithelium...
April 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28429952/rare-cases-imitating-acute-appendicitis-three-case-reports-and-a-review-of-literature
#5
L Kunovsky, Z Kala, L Mitas, V Can, J Dolina, E Nemcová, L Klvacova, T Gajdosova, I Penka
Acute appendicitis with its characteristic clinical course is one of the most common diagnoses that require urgent surgery. The following three case reports present patients with symptoms typical of acute appendicitis which was, however, not confirmed intraoperatively. Preoperative CT or MRI were not requested because symptoms clearly indicated acute appendicitis. The first case describes a male patient with right-sided diverticulitis, the second case report involves a pregnant woman in 33rd week of gestation with right adnexal torsion due to a dermoid cyst, and in the last report, a case of spontaneous perforation of appendiceal mucinous neoplasm is presented...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28426742/multiple-components-of-pka-and-tgf-%C3%AE-pathways-are-mutated-in-pseudomyxoma-peritonei
#6
Lilli Saarinen, Pirjo Nummela, Alexandra Thiel, Rainer Lehtonen, Petrus Järvinen, Heikki Järvinen, Lauri A Aaltonen, Anna Lepistö, Sampsa Hautaniemi, Ari Ristimäki
Pseudomyxoma peritonei (PMP) is a subtype of mucinous adenocarcinoma mainly restricted to the peritoneal cavity and most commonly originating from the appendix. The genetic background of PMP is poorly understood and no targeted treatments are currently available for this fatal disease. While RAS signaling pathway is affected in most if not all PMP cases and over half of them also have a mutation in the GNAS gene, other genetic alterations and affected pathways are, to a large degree, poorly known. In this study, we sequenced whole coding genome of nine PMP tumors and paired normal tissues in order to identify additional, commonly mutated genes and signaling pathways affected in PMP...
2017: PloS One
https://www.readbyqxmd.com/read/28388871/repeat-extraperitoneal-cesarean-section-on-a-woman-with-pseudomyxoma-peritonei
#7
Debjani Mukhopadhyay, Ruta Gada, Barnaby Rufford
No abstract text is available yet for this article.
April 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28365962/outcomes-of-cytoreductive-surgery-and-hipec-for-pseudomyxoma-peritonei-of-appendiceal-origin-from-two-indian-centers-a-preliminary-five-year-experience
#8
Aditi Bhatt, Deepak Sheshadri, Garud Chandan, Veena Ramaswamy, Jeegeshwar Pandey, Nitin Bhorkar, Deepesh Agrawal, Sanket Mehta
PURPOSE: To evaluate the short-term outcomes of patients of pseudomyxoma peritonei (PMP) of appendiceal origin treated with cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) at two tertiary Indian centers. METHODS: Data was prospectively collected from January 2011 to January 2016. Palliative procedures were excluded. HIPEC was performed by the coliseum technique using either a mitomycin or oxaliplatin-based regimen. RESULTS: 77 procedures were performed on 71 patients...
January 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28357060/visceral-scalloping-on-abdominal-computed-tomography-due-to-abdominal-tuberculosis
#9
Vishal Sharma, Anmol Bhatia, Sarthak Malik, Navjeet Singh, Surinder S Rana
OBJECTIVE: Scalloping of visceral organs is described in pseudomyxoma peritonei, malignant ascites, among other conditions, but not tuberculosis. METHODS: We report findings from a retrospective study of patients with abdominal tuberculosis who had visceral scalloping on abdominal computed tomography (CT). Diagnosis of abdominal tuberculosis was made on the basis of combination of clinical, biochemical, radiological and microbiological criteria. The clinical data, hematological and biochemical parameters, and findings of chest X-ray, CT, Mantoux test, and HIV serology were recorded...
January 2017: Therapeutic Advances in Infectious Disease
https://www.readbyqxmd.com/read/28289659/single-center-experience-with-hyperthermic-intraperitoneal-chemotherapy
#10
Woo Ram Kim, Hyuk Hur, Byung Soh Min, Seung Hyuk Baik, Kang Young Lee, Nam Kyu Kim
PURPOSE: Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) have been proposed for controlling peritoneal seeding metastasis in some kinds of cancers, including those of colorectal origin, but their safety and oncological benefits are subjects of debate. We present our early experience with those procedures. METHODS: Data were retrospectively collected from all patients with peritoneal carcinomatosis (PC) and pseudomyxoma peritonei (PMP) treated using CRS and HIPEC at Yonsei Cancer Center between July 2014 and July 2015...
February 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/28280620/potential-actionable-targets-in-appendiceal-cancer-detected-by-immunohistochemistry-fluorescent-in-situ-hybridization-and-mutational-analysis
#11
Erkut Borazanci, Sherri Z Millis, Jeffery Kimbrough, Nancy Doll, Daniel Von Hoff, Ramesh K Ramanathan
BACKGROUND: Appendiceal cancers are rare and consist of carcinoid, mucocele, pseudomyxoma peritonei (PMP), goblet cell carcinoma, lymphoma, and adenocarcinoma histologies. Current treatment involves surgical resection or debulking, but no standard exists for adjuvant chemotherapy or treatment for metastatic disease. METHODS: Samples were identified from approximately 60,000 global tumors analyzed at a referral molecular profiling CLIA-certified laboratory. A total of 588 samples with appendix primary tumor sites were identified (male/female ratio of 2:3; mean age =55)...
February 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28263231/appendix-derived-pseudomyxoma-peritonei-pmp-molecular-profiling-toward-treatment-of-a-rare-malignancy
#12
Elizabeth M Gleeson, Rebecca Feldman, Beth L Mapow, Lynn T Mackovick, Kristine M Ward, William F Morano, Rene R Rubin, Wilbur B Bowne
OBJECTIVES: Pseudomyxoma peritonei (PMP) is a rare malignancy originating from the appendix, characterized by disseminated mucinous tumor implants on peritoneal surfaces. We examined the role of multiplatform molecular profiling to study biomarker-guided treatment strategies for this rare malignancy. METHODS: A total of 54 patients with appendix-derived PMP were included in the study. Tests included one or more of the following: gene sequencing (Sanger or next generation sequencing), protein expression (immunohistochemistry), and gene amplification (C/fluorescent in situ hybridization)...
March 3, 2017: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28255672/liver-scalloping-in-pseudomyxoma-peritonei
#13
REVIEW
Eduardo Kaiser Ururahy Nunes Fonseca, Aparecido Nakano Martins, Cassia Franco Tridente, Fernando Ide Yamauchi, Ronaldo Hueb Baroni
No abstract text is available yet for this article.
March 2, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28209329/prognostic-factors-of-hemorrhagic-complications-after-oxaliplatin-based-hyperthermic-intraperitoneal-chemotherapy-toward-routine-preoperative-dosage-of-von-willebrand-factor
#14
J-B Delhorme, L Sattler, F Severac, E Triki, I Gross, B Romain, S Rohr, L Grunebaum, C Brigand
BACKGROUND: Oxaliplatin-based hyperthermic intraperitoneal chemotherapy (HIPEC-ox) induces specific morbidity with hemorrhagic complications (HC). The aim of this study was to identify preoperative, intraoperative and postoperative HC predictive factors after HIPEC-ox. METHODS: A prospective single center study that included all consecutive patients treated with curative-intent HIPEC-ox, whatever the origin of peritoneal disease, was conducted. All patients underwent systematic blood tests exploring primary hemostasis and endothelial activation before surgical incision (D0) and on postoperative days 2 (POD2) and 5 (POD5)...
February 2, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28192848/low-grade-appendiceal-mucinous-neoplasm-lamn-3-year-endoscopic-follow-up-underlines-benign-course-of%C3%A2-lamn-type-1
#15
Thomas Klag, Jan Wehkamp, Hans Bösmüller, Claudius Falch, Jonas Johannink, Nisar P Malek, Andreas Kirschniak, Martin Goetz
Low-grade appendiceal mucinous neoplasms (LAMNs) are neoplastic lesions with potential progression to pseudomyxoma peritonei (PMP). In most cases, diagnosis is made because of suspected acute appendicitis or incidentally by computed tomography (CT). However, incidental diagnosis during colonoscopy is rare. We present the case of a 63-year-old man with a LAMN type 1 lesion, diagnosed at routine colonoscopy for surveillance of ulcerative colitis. Because in earlier surveillance colonoscopies, this lesion was misinterpreted as fecal polution, for the first time, this case describes retrospectively a 3-year endoscopic follow-up of LAMN type 1, underlining the benign course of these kind of lesions compared to type 2 lesions with submucosal infiltration...
February 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28166144/retro-orbital-breast-cardiac-skin-and-subcutaneous-metastases-of-neuroendocrine-tumor-from-a-tail-gut-cyst-on-68ga-dotatate-pet-ct-imaging
#16
Emine Acar, Hatice Durak, Sare Kabukcuoğlu, Serap Işiksoy, Gamze Çapa Kaya
Tail gut cysts are rare congenital lesions developing from postanal primitive gut remnants. They are mostly benign but carry a potential of malignant transformation, such as adenocarcinoma, neuroendocrine tumor, adenosquamous carcinoma, and pseudomyxoma peritonei. We present a 39-year-old woman with a neuroendocrine tumor arising within a tail gut cyst. She underwent complete resection in 2011. After 4 years, she was admitted with breast nodules, left proptosis, and gaze difficulties. Ga-DOTATATE PET/CT demonstrated extensive metastases including pelvic, lymph node, adrenal gland, bone, retro-orbital, cardiac, breast, skin, and subcutaneous metastases...
May 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28155576/diagnosis-of-pseudomyxoma-peritonei-via-endoscopic-ultrasound-guided-fine-needle-aspiration-a-case-report-and-review-of-literature
#17
Umar Darr, Anas Renno, Turki Alkully, Zubair Khan, Abhinav Tiwari, Waleed Zeb, Jenna Purdy, Ali Nawras
INTRODUCTION: Pseudomyxoma peritonei (PMP) is a rare condition caused by mucinous adenocarcinoma cancerous cells that produce abundance of mucin or gelatinous ascites. This cancer can cause tissue fibrosis and can impair normal organ function. Diagnosis can involve multiple imaging modalities including CT scan. There have been few cases of endoscopic ultrasound (EUS) being used as a means for diagnosis of this condition. Here we report a second case of PMP with a previous history of appendectomy diagnosed with EUS guided fine needle aspiration (FNA) biopsy...
February 3, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28138305/physical-and-chemical-characteristics-of-mucin-secreted-by-pseudomyxoma-peritonei-pmp
#18
Krishna Pillai, Javed Akhter, Ahmed Mekkawy, Terence C Chua, David L Morris
Background: Pseudomyxoma peritonei (PMP) is a rare disease with excess intraperitoneal mucin secretion. Treatment involves laparotomy, cytoreduction and chemotherapy that is very invasive with patients often acquiring numerous compromises. Hence a mucolytic comprising of bromelain and N-acetyl cystein has been developed to solubilise mucin in situ for removal by catherization. Owing to differences in mucin appearance and hardness, dissolution varies. Therefore the current study investigates the inter-mucin physical and chemical characteristics, in order to reformulate an effective mucolytic for all mucin...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28133355/-usefulness-of-transumbilical-laparoscopic-assisted-appendectomy-for-a-suspected-case-of-hydrops-processus-vermiformis
#19
Hiroki Kobayashi, Noriaki Koizumi, Tsuyoshi Takagi, Kanehisa Fukumoto
A-77-year-old man presented to our hospital with high fever and lower abdominal pain. Enhanced CT of the abdomen revealed swelling of the appendix with wall thickening and fluid collection. We diagnosed appendicitis with abscess formation and performed transumbilical laparoscopic-assisted appendectomy after the inflammation improved in response to antibiotics. Operative findings revealed a cystic lesion ofthe appendix and strong adhesion ofthe appendix to the terminal ileum. Based on these operative findings, we changed the operative procedure to a single-incision laparoscopic assisted ileocecal resection because ofthe possibility ofhydrops processus vermiformis...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133311/-a-case-of-appendiceal-mucinous-cystadenoma-treated-using-laparoscopic-appendectomy
#20
Daiki Marukawa, Shingo Noura, Harunobu Yasuyama, Tae Matsumura, Chikato Koga, Akihiro Takata, Chizu Kameda, Masahiro Murakami, Ryohei Kawabata, Masaki Hirota, Junzo Shimizu, Hideaki Miwa, Junichi Hasegawa
A 73 year-old woman who was treated for breast cancer and visited our hospital regularly was suspected of having a mucinous cystadenoma of the appendix. Malignancy could not be determined using abdominal computed tomography, magnetic resonance imaging, or colonoscopy. Even if mucinous cystadenoma is benign, there is the possibility that the tumor will rupture, discharge its contents, and cause pseudomyxoma peritonei. We performed laparoscopic appendectomy. According to the histopathological results, the tumor was diagnosed as a low grade appendiceal mucinous neoplasm...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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