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McClelland PH, Gregory SN, Nah SK, Hernandez JM, Davis JL, Blakely AM. Predicting Survival in Mucinous Adenocarcinoma of the Appendix: Demographics, Disease Presentation, and Treatment Methodology. Ann Surg Oncol 2024; 31:6237-6251. [PMID: 38874874 PMCID: PMC11300641 DOI: 10.1245/s10434-024-15526-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 05/13/2024] [Indexed: 06/15/2024]
Abstract
BACKGROUND Mucinous adenocarcinoma of the appendix (MACA) follows a complex disease course with variable survival. Large-scale predictive modeling may determine subtle yet important prognostic factors otherwise unseen in smaller cohort analyses. METHODS Patients with MACA were identified from the Surveillance, Epidemiology, and End Results (SEER) Research Plus database (2005-2019). Primary, secondary, and tertiary outcomes were disease-specific survival (DSS), overall survival (OS), and average annual percent change (AAPC) in incidence. RESULTS Among 4,258 included patients, MACA was most frequently diagnosed at 50 to 69 years (52.0%), with female preponderance (55.9%). MACA incidence AAPC was 3.8 (95% confidence interval [CI] 1.9-5.9). For patients with exclusive, first-diagnosis MACA included in survival analysis (3,222 patients), median DSS and OS were 118 and 88 months, respectively. In DSS-based multivariable analysis, worse prognosis was associated with non-Hispanic Black background (HR 1.36, 95% CI 1.02-1.82; p = 0.036), high grade (grade 3 HR 3.10, 95% CI 2.44-3.92; p < 0.001), lymphatic spread (HR 2.73, 95% CI 2.26-3.30; p < 0.001), and distant metastasis (HR 5.84, 95% CI 3.86-8.83; p < 0.001). In subcohort analysis of patients with rationale for cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC, 2,387 patients), CRS-HIPEC was associated with survival benefit compared with surgery alone but only for moderate-grade tumors (median DSS/OS 138/138 vs. 116/87 months; p < 0.001). CONCLUSIONS Mucinous adenocarcinoma of the appendix incidence is increasing in the United States. Survival rates are affected by both demographics and classical risk factors, and CRS-HIPEC-associated survival benefit predominantly occurs in moderate-grade tumors. Further exploration of biologic and clinicopathologic features may enhance risk stratification for this disease.
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Affiliation(s)
- Paul H McClelland
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Stephanie N Gregory
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shirley K Nah
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jonathan M Hernandez
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jeremy L Davis
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Andrew M Blakely
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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2
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Dartigues P. [Histoseminar tumoral peritoneal biopsies. Case No. 2]. Ann Pathol 2024; 44:245-251. [PMID: 38971668 DOI: 10.1016/j.annpat.2024.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 07/08/2024]
Affiliation(s)
- Peggy Dartigues
- Département d'anatomie et cytologie pathologiques, Gustave-Roussy, 114, rue Edouard-Vaillant, 94805 Villejuif, France.
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3
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Meza-Martinez DA, Suro Santos Y, Andrade-Ordoñez SJ, Palomino-Payan JA, Fematt-Rodriguez BJ. A Case of Low-Grade Appendiceal Mucinous Neoplasm: The Role of Preoperative Imaging and Surgical Technique in Achieving Favorable Outcomes. Cureus 2024; 16:e65168. [PMID: 39045023 PMCID: PMC11263967 DOI: 10.7759/cureus.65168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2024] [Indexed: 07/25/2024] Open
Abstract
Appendiceal mucinous neoplasms may present without symptoms or with chronic pain in the right lower quadrant. This report describes a case of a 35-year-old woman who presented with chronic right lower quadrant pain and was found to have a low-grade appendiceal mucinous neoplasm (LAMN). Physical examination revealed localized tenderness in the right lower quadrant with no additional symptoms. Preoperative laboratory results were normal, and a CT scan revealed a cystic appendiceal lesion with an internal calcification, initially mistaken for a fecalith, which led to the decision for exploratory laparotomy. Intraoperative findings confirmed the presence of a cystic-like appendiceal lesion, and an open appendectomy was performed. Histopathological examination revealed a low-grade appendiceal mucinous neoplasm (LAMN) confined to the mucosa, without evidence of metastatic disease. The patient had an uneventful recovery and required no additional treatment. This case highlights that surgical intervention with proper technique for confined appendiceal neoplasms, combined with effective preoperative imaging and thorough histopathological examination, is crucial for diagnosis and effective management, ensuring favorable outcomes.
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Affiliation(s)
- Daniel A Meza-Martinez
- General Surgery, Instituto Mexicano del Seguro Social, Hospital General de Zona No. 33, Monterrey, MEX
| | - Yeudiel Suro Santos
- General Surgery, Instituto Mexicano del Seguro Social, Hospital General de Zona No. 33, Monterrey, MEX
| | | | - Julio A Palomino-Payan
- General Surgery, Instituto Mexicano del Seguro Social, Hospital General de Zona No. 33, Monterrey, MEX
| | - Brando J Fematt-Rodriguez
- General Surgery, Instituto Mexicano del Seguro Social, Hospital General de Zona No. 33, Monterrey, MEX
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4
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Dartigues P. [Histoseminar tumoral peritoneal biopsies. Appendicular mucinous neoplasia]. Ann Pathol 2024; 44:274-290. [PMID: 38981795 DOI: 10.1016/j.annpat.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 07/11/2024]
Affiliation(s)
- Peggy Dartigues
- Département d'anatomie et cytologie pathologiques - Gustave-Roussy, 114, rue Édouard-Vaillant, 94805 Villejuif, France.
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5
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Soto Llanes JO, Dosal Limón SK, Iberri Jaime AJ, Zambrano Lara M, Jiménez Bobadilla B. Lower Gastrointestinal Bleeding Secondary to Appendiceal Mucinous Neoplasm: A Report of Two Cases and a Review of the Literature. Cureus 2024; 16:e52908. [PMID: 38406052 PMCID: PMC10893774 DOI: 10.7759/cureus.52908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2024] [Indexed: 02/27/2024] Open
Abstract
Appendicular mucinous neoplasms, constituting less than 1% of gastrointestinal tract neoplasms, are heterogeneous entities. They may be asymptomatic, discovered incidentally, or present as large tumors due to mucin accumulation. The lack of standardized treatment complicates management. Imaging studies, particularly CT scans, are crucial for diagnosis and follow-up. This case report presents two clinical cases of women in their sixth and seventh decades of life with a history of lower gastrointestinal bleeding, mild anemia in laboratory studies, and incomplete colonoscopies. The diagnosis, confirmed through CT scans, led to the decision for surgical intervention in both cases, involving laparoscopic right hemicolectomy with ileotransverse anastomosis. Subsequently, histopathological reports confirmed the diagnosis of high-grade appendicular mucinous neoplasms, and a follow-up plan was established with imaging studies every six months with no recurrence at two years. Over 50% of appendicular tumors are mucinous neoplasms originating from low-grade mucinous neoplasms. Given the low lymph node invasion (2%), appendectomy may suffice if the entire tumor is excised. Extensive resections or right hemicolectomy are reserved for larger tumors or high-grade neoplasms to minimize local recurrence risk. Mucinous neoplasms with acellular mucin and peritoneal invasion may require cytoreduction or right hemicolectomy, while those with mucinous epithelium may need hyperthermic intraperitoneal chemotherapy (HIPEC) due to the risk of local recurrence, worsened by the presence of extra appendiceal epithelial cells. Disease-free and overall survival depend on treatment and initial lesion characterization. A five-year survival rate of 86% is reported for low-grade mucinous neoplasms. Follow-up approaches lack an ideal standard, generally involving physical examinations and imaging studies every six months to one year during the first six years.
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Affiliation(s)
| | | | | | - Mario Zambrano Lara
- Colorectal Surgery, General Hospital of Mexico Dr. Eduardo Liceaga, Mexico City, MEX
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6
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Fischer AK, Tannapfel A, Quaas A. [Mucinous tumors of the peritoneum]. CHIRURGIE (HEIDELBERG, GERMANY) 2023; 94:823-831. [PMID: 37418023 DOI: 10.1007/s00104-023-01926-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/12/2023] [Indexed: 07/08/2023]
Abstract
INTRODUCTION Disseminated peritoneal seeding of mucin-forming tumors is a rare malignant disease with variable prognosis. Histomorphological criteria are instrumental in the prognostic assessment. The past 10 years have led to a standardization of nomenclature and subsequently to the establishment of therapeutic standards. This article aims to provide the current status of the pathological classification, staging, and grading. METHOD AND MATERIAL Selective literature search in PubMed and Medline RESULTS: The vast majority of disseminated peritoneal mucinous diseases that correspond to the clinical presentation of pseudomyxoma peritonei (PMP) arise from mucinous tumors of the vermiform appendix. Here are to be distinguished: 1) low-grade appendiceal mucinous neoplasms (LAMN), 2) (very rare) high-grade appendiceal mucinous neoplasms (HAMN), 3) mucinous adenocarcinoma without signet ring cells (G2) and 4) mucinous adenocarcinoma with signet ring cells or signet ring cell carcinoma (G3). Other primary tumors only rarely induce PMP. Terms such as mucocele or mucinous cystadenoma of the appendix correspond to LAMN and should no longer be used. Prognostic distinctions are further made between low-grade PMP, which usually arises from LAMN, and the prognostically less favorable high-grade PMP, which usually arises from mucinous/signet ring cell adenocarcinoma or the rare HAMN. Disseminated peritoneal mucinous disease/PMP must then be further distinguished from prognostically excellent local mucin formation of the peri-appendix region. DISCUSSION The currently valid nomenclature, as it has emerged from consensus meetings and in parts has also found its way into the current WHO 2019, has significantly contributed to the fact that the prognosis of patients today can be better estimated and effective forms of treatment could be developed.
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Affiliation(s)
- Anne Kristin Fischer
- Institut für Pathologie, Universitätsklinikum Köln, Kerpener Str. 62, 50937, Köln, Deutschland.
| | - Andrea Tannapfel
- BG Universitätsklinikum Bergmannsheil Bochum, Bürkle de la Camp-Platz 1, 44789, Bochum, Deutschland
| | - Alexander Quaas
- Institut für Pathologie, Universitätsklinikum Köln, Kerpener Str. 62, 50937, Köln, Deutschland
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7
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Constantin M, Mătanie C, Petrescu L, Bolocan A, Andronic O, Bleotu C, Mitache MM, Tudorache S, Vrancianu CO. Landscape of Genetic Mutations in Appendiceal Cancers. Cancers (Basel) 2023; 15:3591. [PMID: 37509254 PMCID: PMC10377024 DOI: 10.3390/cancers15143591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/28/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
In appendiceal cancers, the most frequently mutated genes are (i) KRAS, which, when reactivated, restores signal transduction via the RAS-RAF-MEK-ERK signaling pathway and stimulates cell proliferation in the early stages of tumor transformation, and then angiogenesis; (ii) TP53, whose inactivation leads to the inhibition of programmed cell death; (iii) GNAS, which, when reactivated, links the cAMP pathway to the RAS-RAF-MEK-ERK signaling pathway, stimulating cell proliferation and angiogenesis; (iv) SMAD4, exhibiting typical tumor-suppressive activity, blocking the transmission of oncogenic TGFB signals via the SMAD2/SMAD3 heterodimer; and (v) BRAF, which is part of the RAS-RAF-MEK-ERK signaling pathway. Diverse mutations are reported in other genes, which are part of secondary or less critical signaling pathways for tumor progression, but which amplify the phenotypic diversity of appendiceal cancers. In this review, we will present the main genetic mutations involved in appendix tumors and their roles in cell proliferation and survival, and in tumor invasiveness, angiogenesis, and acquired resistance to anti-growth signals.
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Affiliation(s)
- Marian Constantin
- Institute of Biology of Romanian Academy, 060031 Bucharest, Romania
- The Research Institute of the University of Bucharest (ICUB), 050095 Bucharest, Romania
| | - Cristina Mătanie
- Department of Anatomy, Animal Physiology and Biophysics (DAFAB), Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Livia Petrescu
- Department of Anatomy, Animal Physiology and Biophysics (DAFAB), Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Alexandra Bolocan
- Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Octavian Andronic
- Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Coralia Bleotu
- Life, Environmental and Earth Sciences Division, The Research Institute of the University of Bucharest (ICUB), 050095 Bucharest, Romania
- Stefan S. Nicolau Institute of Virology, 030304 Bucharest, Romania
| | | | - Sorin Tudorache
- Faculty of Medicine, "Titu Maiorescu" University, 040441 Bucharest, Romania
| | - Corneliu Ovidiu Vrancianu
- The Research Institute of the University of Bucharest (ICUB), 050095 Bucharest, Romania
- Microbiology-Immunology Department, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
- National Institute of Research and Development for Biological Sciences, 060031 Bucharest, Romania
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8
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Miguez González J, Calaf Forn F, Pelegrí Martínez L, Lozano Arranz P, Oliveira Caiafa R, Català Forteza J, Palacio Arteaga LM, Losa Gaspà F, Ramos Bernadó I, Barrios Sánchez P, Ayuso Colella JR. Primary and secondary tumors of the peritoneum: key imaging features and differential diagnosis with surgical and pathological correlation. Insights Imaging 2023; 14:115. [PMID: 37395913 DOI: 10.1186/s13244-023-01417-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 03/30/2023] [Indexed: 07/04/2023] Open
Abstract
Peritoneal malignancies represent a diagnostic challenge for abdominal radiologists, oncologists, surgeons and pathologists in multidisciplinary teams, who must address their differential diagnosis, staging and treatment. In this article, we explain the pathophysiology of these processes and lay out the role of different imaging techniques in their evaluation. Then, we review the clinical and epidemiological aspects, the main radiological features and the therapeutic approaches for each primary and secondary peritoneal neoplasm, with surgical and pathological correlation. We further describe other rare peritoneal tumors of uncertain origin and a variety of entities that may mimic peritoneal malignancy. Finally, we summarize the key imaging findings of each peritoneal neoplasm to facilitate an accurate differential diagnosis that may impact patient management.Clinical relevance statementImaging plays an essential role in the evaluation of peritoneal malignancies, assessing their extension, detecting unfavorable sites of involvement and facilitating an accurate differential diagnosis, helping to choose the best therapeutic approach.
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Affiliation(s)
- Javier Miguez González
- Department of Radiology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain.
| | - Francesc Calaf Forn
- Department of Radiology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Laura Pelegrí Martínez
- Department of Radiology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Pilar Lozano Arranz
- Department of Radiology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Rafael Oliveira Caiafa
- Department of Radiology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Jordi Català Forteza
- Department of Radiology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Lina Maria Palacio Arteaga
- Department of Pathology, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Ferrán Losa Gaspà
- Department of Medical Oncology, Institut Català d'Oncologia Hospitalet, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Barcelona, Spain
| | - Isabel Ramos Bernadó
- Peritoneal Surface Malignancies Unit, Department of Surgery, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
| | - Pedro Barrios Sánchez
- Former Director of the Peritoneal Carcinomatosis Program of Catalonia, Former Head of the Peritoneal Surface Malignancies Unit, Department of Surgery, Complex Hospitalari Universitari Moisès Broggi, Consorci Sanitari Integral, Sant Joan Despí, Barcelona, Spain
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9
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Wang M, Liu J, Hu B, Wang S, Xie P, Li P. Appendiceal perforation secondary to endometriosis with intestinal metaplasia: A case report. Exp Ther Med 2023; 25:262. [PMID: 37206544 PMCID: PMC10189722 DOI: 10.3892/etm.2023.11961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/03/2023] [Indexed: 05/21/2023] Open
Abstract
Appendiceal endometriosis with intestinal metaplasia is particularly challenging to diagnose preoperatively based on clinical features. Microscopically, it can mimic malignant transformation into mucinous neoplasms of the appendix. The present study reports a case of a 47-year-old woman who presented with abdominal pain that was not related to her menstruation. The preoperative diagnosis and laparoscopic evaluation were chronic appendicitis. No mucinous or haemorrhagic secretions were present within the abdominal cavity. Pathological evaluation revealed conventional endometriosis with intestinal-type metaplasia of the epithelium. An inverse pattern of cytokeratin (CK)7, paired-box 8, estrogen receptor, CK20, caudal type homeobox transcription factor 2 and mucin 2 immunoreactivity between intestinal-type and endometrial-type endothelium was observed. Infiltration and replacement of the appendiceal wall by marked levels of acellular mucin, a lack of stromal components and a DNA mismatch repair protein profile were vital in diagnosing appendiceal endometriosis without appendiceal mucinous neoplasms (AMNs). The lesion of appendiceal endometriosis are usually superficial and small in previously reported cases but was deeply invasive in our case. A careful histopathological examination is necessary for diagnosing and distinguishing the histologic imitators of AMN.
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Affiliation(s)
- Minghua Wang
- Department of Pathology, Longgang District People's Hospital of Shenzhen, The Second Affiliated Hospital of The Chinese University of Hong Kong, Shenzhen 518172, P.R. China
| | - Jing Liu
- Department of Pathology, Jinan University School of Medicine, Guangzhou, Guangdong 510632, P.R. China
- Department of Pathology, Hainan Western Central Hospital, Danzhou, Hainan 571799, P.R. China
| | - Boxin Hu
- Department of Pathology, Longgang District People's Hospital of Shenzhen, The Second Affiliated Hospital of The Chinese University of Hong Kong, Shenzhen 518172, P.R. China
| | - Simin Wang
- Department of Pathology, Longgang District People's Hospital of Shenzhen, The Second Affiliated Hospital of The Chinese University of Hong Kong, Shenzhen 518172, P.R. China
| | - Ping Xie
- Department of Pathology, Longgang District People's Hospital of Shenzhen, The Second Affiliated Hospital of The Chinese University of Hong Kong, Shenzhen 518172, P.R. China
| | - Ping Li
- Department of Pathology, Jinan University School of Medicine, Guangzhou, Guangdong 510632, P.R. China
- Correspondence to: Professor Ping Li, Department of Pathology, Jinan University School of Medicine, 601 Huangpu Road West, Guangzhou, Guangdong 510632, P.R. China
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10
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An S, Koh HH, Chang ES, Choi J, Song JY, Lee MS, Choi YL. Unearthing novel fusions as therapeutic targets in solid tumors using targeted RNA sequencing. Front Oncol 2022; 12:892918. [PMID: 36033527 PMCID: PMC9399837 DOI: 10.3389/fonc.2022.892918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/13/2022] [Indexed: 11/24/2022] Open
Abstract
Detection of oncogenic fusion genes in cancers, particularly in the diagnosis of uncertain tumors, is crucial for determining effective therapeutic strategies. Although novel fusion genes have been discovered through sequencing, verifying their oncogenic potential remain difficult. Therefore, we evaluated the utility of targeted RNA sequencing in 165 tumor samples by identifying known and unknown fusions. Additionally, by applying additional criteria, we discovered eight novel fusion genes that are expected to process oncogenicity. Among the novel fusion genes, RAF1 fusion genes were detected in two cases. PTPRG-RAF1 fusion led to an increase in cell growth; while dabrafenib, a BRAF inhibitor, reduced the growth of cells expressing RAF1. This study demonstrated the utility of RNA panel sequencing as a theragnostic tool and established criteria for identifying oncogenic fusion genes during post-sequencing analysis.
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Affiliation(s)
- Sungbin An
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, South Korea
- Laboratory of Molecular Pathology and Theranotics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
| | - Hyun Hee Koh
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Eun Sol Chang
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, South Korea
- Laboratory of Molecular Pathology and Theranotics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
| | - Juyoung Choi
- Laboratory of Molecular Pathology and Theranotics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
- Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, South Korea
| | - Ji-Young Song
- Laboratory of Molecular Pathology and Theranotics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
| | - Mi-Sook Lee
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, South Korea
- Laboratory of Molecular Pathology and Theranotics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
- *Correspondence: Mi-Sook Lee, ; Yoon-La Choi,
| | - Yoon-La Choi
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, South Korea
- Laboratory of Molecular Pathology and Theranotics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
- Department of Pathology and Translational Genomics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea
- *Correspondence: Mi-Sook Lee, ; Yoon-La Choi,
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11
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Bowles M, Ng JY, Nabi H. Delivery of an Incidental Appendiceal Mucinous Neoplasm. Cureus 2022; 14:e26214. [PMID: 35891827 PMCID: PMC9307351 DOI: 10.7759/cureus.26214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2022] [Indexed: 02/05/2023] Open
Abstract
Low-grade appendiceal mucinous neoplasms (LAMNs) are rare and non-invasive tumors of the appendix, and their unexpected discovery during surgery can pose challenges to management. To date, only two cases pertaining to LAMNs without peritoneal spread in pregnancy exist in the literature. Here, we present a literature review of appendiceal mucinous neoplasms and discuss our management and operative approach to a large, incidental appendiceal mucinous neoplasm discovered during an emergency cesarean section of a 38-year-old female.
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Affiliation(s)
- Madison Bowles
- Colorectal Surgery, Department of General Surgery, Logan Hospital, Brisbane, AUS
| | - Jessica Y Ng
- Surgery, Gold Coast University Hospital, Queensland, AUS
| | - Hajir Nabi
- Colorectal Surgery, Logan Hospital, Queensland, AUS
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