scholarly journals A Case of Strangulation Ileus Due to a Low-Grade Appendiceal Mucinous Neoplasm

2020 ◽  
Vol 21 ◽  
Author(s):  
Ryohei Takei ◽  
Keiichiro Kanamoto ◽  
Yuta Tamaru ◽  
Koki Nojima ◽  
Kazuyoshi Mitta ◽  
...  
Keyword(s):  
Low Grade ◽  
Mucinous Neoplasm ◽  
Strangulation Ileus

scholarly journals A Case of Strangulation Ileus Caused by Low-grade Appendiceal Mucinous Neoplasm

2018 ◽  
Vol 79 (12) ◽  
pp. 2425-2429
Author(s):  
Chika MAEDA ◽  
Yoshiki MIZUKAMI ◽  
Hiroaki OGIWARA ◽  
Manabu HIRAGURI ◽  
Naoto HORIGOME ◽  
...  
Keyword(s):  
Low Grade ◽  
Mucinous Neoplasm ◽  
Strangulation Ileus

Acute lower gastrointestinal bleeding due to low-grade mucinous neoplasm of appendix

2020 ◽  
pp. 1-4
Author(s):  
Murat Karatas ◽  
Cenk Simsek ◽  
Süleyman Gunay ◽  
Baha Zengel ◽  
Gokalp Okut ◽  
...  
Keyword(s):  
Gastrointestinal Bleeding ◽  
Lower Gastrointestinal Bleeding ◽  
Low Grade ◽  
Mucinous Neoplasm

EP.FRI.999 Case report of a Low Grade appendiceal mucinous neoplasm (LAMN) and review of literature

2021 ◽  
Vol 108 (Supplement_7) ◽  
Author(s):  
Kimberly Da Costa ◽  
Sivakumaran Sabanathan
Keyword(s):  
Intraperitoneal Chemotherapy ◽  
Pseudomyxoma Peritonei ◽  
Right Hemicolectomy ◽  
Low Grade ◽  
Mucinous Neoplasm ◽  
Mucinous Neoplasms ◽  
Mucocele Of The Appendix ◽  
Preoperative Ct ◽  
Inflammatory Processes ◽  
Progressive Accumulation

Abstract A mucocele refers to an appendix that has dilated due to progressive accumulation of mucus within its lumen. Appendiceal mucocele is a rare cause of an acute abdomen. They represent 0.2-0.7% of all appendix specimens. LAMN account for less than 0.3% of appendicectomy specimens.  We present a 38 year old man with an acute RIF’s pain who went on to have CT scan which revealed a mucocele of appendix but did not show any features of perforation or pseudomyxoma peritonei. He had a laparoscopic converted to open appendicectomy. The proximal 2 cm of appendix was oedematous but normal calibre. Histology revealed a low grade appendiceal mucinous neoplasm (LAMN) that was completely excised.  The mucocele of the appendix was first described by Rokitansky in 1842. Appendix mucocele may come as a consequence of obstructive or inflammatory processes, cystadenomas or cystadenocarcinomas. Appendiceal mucinous neoplasms commonly presents in the sixth decade of life and our patient was much younger in comparison. Several literatures suggest the value of preoperative CT imaging in obtaining diagnosis and also in planning further treatment. Appendicectomy or a right hemicolectomy is treatment of choice based on presence or absence of following factors 1. Perforated mucocele 2. Involvement of the base of the appendix. 3. Positive lymph nodes of mesoappendix and ileocolic. Patients with malignancy or pseudomyxoma peritonei are likely to require cytoreductive surgery, heated intraoperative intraperitoneal chemotherapy, early postoperative intraperitoneal chemotherapy.

scholarly journals A rare case of low-grade appendiceal mucinous neoplasm within an incarcerated Amyand�s hernia

2017 ◽  
Vol 6 ◽  
pp. 13
Author(s):  
Diana Fernandes ◽  
Maria Olim Sousa ◽  
Ricardo Viveiros ◽  
Sara Silva ◽  
Susana N�brega ◽  
...  
Keyword(s):  
Rare Case ◽  
Low Grade ◽  
Mucinous Neoplasm

scholarly journals Giant low-grade appendiceal mucinous neoplasm: A case report

2019 ◽  
Vol 7 (13) ◽  
pp. 1726-1731
Author(s):  
Jian-Ming Yang ◽  
Wei-Hao Zhang ◽  
Dan-Dan Yang ◽  
Hao Jiang ◽  
Lei Yu ◽  
...  
Keyword(s):  
Case Report ◽  
Low Grade ◽  
Mucinous Neoplasm

Triple Synchronous Tumors of the Appendix: Carcinoid, Goblet Cell Carcinoma and Low-Grade Mucinous Neoplasm

2020 ◽  
pp. 000313482095484
Author(s):  
Fabio Carboni ◽  
Renato Covello ◽  
Maria Grazia Diodoro ◽  
Enrico Vizza ◽  
Mario Valle
Keyword(s):  
Cell Carcinoma ◽  
Goblet Cell ◽  
Low Grade ◽  
Synchronous Tumors ◽  
Mucinous Neoplasm

scholarly journals Classification of mucinous appendiceal neoplasm and pseudomyoxma peritonei

2018 ◽  
Vol 8 (1) ◽  
pp. 1301-1307
Author(s):  
Arnab Ghosh
Keyword(s):  
Goblet Cell ◽  
Wide Spectrum ◽  
Low Grade ◽  
Controversial Issues ◽  
High Grade ◽  
Goblet Cell Carcinoid ◽  
Signet Ring Cells ◽  
Mucinous Neoplasm ◽  
Signet Ring

Mucinous appendiceal tumors are uncommon and include a wide spectrum of tumors whose classification remained controversial. Some of these mucin producing appendiceal tumors can disseminate to the peritoneal cavity leading to pseudomyxoma peritonei (PMP). Despite several attempts to classify mucinous tumors of appendix and PMP by different authors in the past, no universally accepted classification system was present. The controversial issues were discussed at the 2012 World Congress of the Peritoneal Surface Oncology Group International (PSOGI) in Berlin. A panel of 71 experts from 13 different countries was formed under the lead co-ordinator Norman J. Carr. A total of 4 rounds of questionnaires and one meeting were held. The opinion of the majority was taken into account. Importance of intactness of muscularis mucosae, pushing invasion and infiltrative invasion were emphasized. The entities Low grade appendiceal mucinous neoplasm (LAMN) and High grade appendiceal mucinous neoplasm (HAMN) were defined.. The terminologies suggested for Goblet cell carcinoid and adenoneuroendocrine carcinoma were goblet cell tumor and adenocarcinoma ex goblet cell carcinoid. Acellular mucin in peritoneum was not classified under PMP which was classified into 3 categories depending upon low grade , high grade cytologic features and presence of signet ring cells. It was suggested to report the extent of mucin and cells separately. A reporting format solely for mucinous appendiceal tumors was formulated by the panel. However, there are some grey areas which may have to be addressed in future.

Diagnostic concordance in cases of appendiceal mucinous neoplasia referred to a tertiary referral centre

2019 ◽  
Vol 72 (9) ◽  
pp. 639-641 ◽  
Author(s):  
Aliasger Amin ◽  
Norman Carr
Keyword(s):  
Accurate Diagnosis ◽  
Low Grade ◽  
Referral Centre ◽  
Tertiary Referral ◽  
Tertiary Referral Centre ◽  
Peritoneal Disease ◽  
Mucinous Neoplasm ◽  
Mucosal Changes ◽  
Diagnostic Concordance ◽  
Peritoneal Malignancy

Accurate diagnosis of appendiceal tumours and any associated peritoneal disease is clinically important but can be difficult. We retrieved the records of patients referred to the Peritoneal Malignancy Institute, Basingstoke, in the years 2016, 2017 and 2018 with a diagnosis of mucinous appendiceal neoplasia and identified 323 patients in which slides were reviewed as part of the referral pathway. Comparing the local report from the referring centre with the central review report, in 57 (18%) we identified a discrepancy. In 39 (12%) the discrepancy was in overall diagnosis, including 22 (7%) in which the local diagnosis was low-grade appendiceal mucinous neoplasm whereas the review diagnosis was reactive mucosal changes, usually due to ruptured diverticulum, with no evidence of neoplasia. Our findings support the practice of central review of histopathology slides by experienced pathologists at tertiary referral centres. They also suggest that improvements in diagnostic criteria are needed.

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