{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T02:45:41Z","timestamp":1772160341968,"version":"3.50.1"},"reference-count":26,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2019,9,3]],"date-time":"2019-09-03T00:00:00Z","timestamp":1567468800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Histopathology"],"published-print":{"date-parts":[[2019,10]]},"abstract":"<jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>To research and identify how often complicated diverticular disease of the appendix [appendiceal diverticular disease (ADD)] shows histological mimicry of low\u2010grade appendiceal mucinous neoplasms (LAMNs) and to provide guidance on the useful histopathological features that allow the appropriate diagnosis to be made.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and results<\/jats:title>\n                    <jats:p>Seventy\u2010four cases of complicated appendiceal diverticular disease were identified from two specialist centres. Of the second opinion\/consultation cases, 71% of the ADD cases had been diagnosed by referring pathologists as LAMNs. Salient pathological features were identified and agreed upon to reach the applicable diagnosis. For a diagnosis of complicated diverticulosis, particularly when associated with mucus cysts, the following morphological features were regarded as important: relative retention of the normal mucosal architecture with lamina propria and a maintained crypt architecture, crypts arranged in regular array, epithelial hyperplasia and a lack of nuclear abnormalities extending the length of the crypts. In a formal case\u2013control study undertaken on 30 cases with each diagnosis, ADD and LAMN, loss of lamina propria, a filiform architecture and hypermucinosis were significantly associated with low\u2010grade appendiceal mucinous neoplasms. Mucosal neuromas were significantly associated with diverticular disease of the appendix.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>To our knowledge, this study represents the largest series in the world literature and serves to highlight the important pathological features to distinguish complicated diverticular disease of the appendix from LAMNs, and emphasises the difficulties experienced by diagnostic pathologists in diagnosing complicated appendiceal diverticulosis. This is important, as LAMNs have a significant risk of transcoelomic spread, while complicated appendiceal diverticulosis has no such risk.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/his.13931","type":"journal-article","created":{"date-parts":[[2019,6,5]],"date-time":"2019-06-05T09:14:25Z","timestamp":1559726065000},"page":"478-485","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Complicated appendiceal diverticulosis versus low\u2010grade appendiceal mucinous neoplasms: a major diagnostic dilemma"],"prefix":"10.1111","volume":"75","author":[{"given":"Hannah","family":"Lowes","sequence":"first","affiliation":[{"name":"Gloucestershire Cellular Pathology Laboratory Cheltenham General Hospital Cheltenham UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Babatunde","family":"Rowaiye","sequence":"additional","affiliation":[{"name":"Peritoneal Malignancy Institute Basingstoke and North Hampshire Hospital Basingstoke UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Norman J","family":"Carr","sequence":"additional","affiliation":[{"name":"Peritoneal Malignancy Institute Basingstoke and North Hampshire Hospital Basingstoke UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4228-6580","authenticated-orcid":false,"given":"Neil A","family":"Shepherd","sequence":"additional","affiliation":[{"name":"Gloucestershire Cellular Pathology Laboratory Cheltenham General Hospital Cheltenham UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,9,3]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.38940.664363.AE"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1097\/PAS.0b013e3181abe31b"},{"key":"e_1_2_5_4_1","volume-title":"A contribution to the pathology of the vermiform appendix","author":"Kelynack TN","year":"1893"},{"key":"e_1_2_5_5_1","first-page":"503","volume-title":"Morson & Dawson\u2019s gastrointestinal pathology","author":"Eckstein RP","year":"2013"},{"key":"e_1_2_5_6_1","first-page":"404308","article-title":"Clinicopathological study of 25 cases of diverticular disease of the appendix: experience from Farwaniya Hospital","volume":"2013","author":"Al\u2010Brahim N","year":"2013","journal-title":"Patholog. 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