Appendiceal Mucocele: A Diagnostic Dilemma in Differentiating Malignant From Benign Lesions With CT

Wang, Hao; Chen, Yongqi; Wei, Ran; Wang, Qingbing; Song, Bin; Wang, Cang-Yi; Zhang, Bei

doi:10.2214/ajr.12.9260

Cited by 73 publications

(76 citation statements)

References 18 publications

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“…Soft-tissue thickening inside the appendix, wall irregularity, or presence of PMP have been shown to be the most reliable markers for malignancy. [8]…”

Section: Discussionmentioning

confidence: 99%

Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

Hutchinson

Lyske

Patel

et al. 2018

Journal of Clinical Imaging Science

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Pelvic pain presents a common diagnostic conundrum with a myriad of causes ranging from benign and trivial to malignant and emergent. We present a case where a mucinous neoplasm of the appendix acted as a mimic for tubular adnexal pathology on imaging. With the associated imaging findings on ultrasound, computed tomography, and magnetic resonance imaging, we wish to raise awareness of mucinous tumors of the appendix when tubular right adnexal pathology is present both in the presence of pelvic or abdominal pain or when noted incidentally. Tubular pathology such as uncomplicated paraovarian cysts or hydrosalpinx is frequently treated conservatively with long-interval follow-up imaging or left to clinical follow-up. Thus, if incorrectly diagnosed as tubular pathology, an appendix mucocele or mucinous neoplasm of the appendix is likely to be undertreated. We wish to clarify some of the confusion around nomenclature and classification of the multiple entities that are comprised by the terms mucocele and mucinous tumor of the appendix.

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“…Soft-tissue thickening inside the appendix, wall irregularity, or presence of PMP have been shown to be the most reliable markers for malignancy. [8]…”

Section: Discussionmentioning

confidence: 99%

Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

Hutchinson

Lyske

Patel

et al. 2018

Journal of Clinical Imaging Science

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“…CT appearances preoperatively usually show a round, cystic tubular mass in the location of the appendix [15]. Mucoceles are well-encapsulated with a smooth wall of variable thickness [9].…”

Section: Discussionmentioning

confidence: 99%

“…However, differentiating between benign and neoplastic mucoceles preoperatively is more difficult. A limited study by Wang et al in 2013 suggested that irregularity and soft tissue thickening can suggest a preoperative diagnosis of appendiceal mucocele but the study excluded patients presenting with appendicitis, ruling out a large proportion of cases [15]. …”

Section: Discussionmentioning

confidence: 99%

Acute Torsion of Appendicular Mucocele

Ejtehadi

Brooks

Ali

et al. 2017

Case Reports in Surgery

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We present the case of an 81-year-old man with a known appendicular mucocele who presented to the emergency department with acute abdominal pain. A CT scan showed a change in orientation of the previously seen ovoid mass with surrounding fat stranding suggesting torsion. An emergency laparotomy with appendicectomy and resection of the caecal pole was performed. We discuss the findings and histopathology.

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“…It is generally accepted that CT is better than ultrasound (US) and magnetic resonance imaging (MRI) to diagnose mucocele: however, it is difficult to distinguish between benign and malignant neoplastic mucoceles [9,[15][16][17]. Mucinous Appendiceal mucocele requires surgical resection.…”

Section: Discussionmentioning

confidence: 99%

Giant Mucinous Cystadenoma of the Appendix With Low Grade Dysplasia Presented as Acute Appendicitis: A Case Report and Literature Review

Reznichenko

2015

J Curr Surg

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Mucinous cystadenoma of the appendix is an unusual neoplasm, which represents one of the histological subtypes of mucocele. Giant appendiceal cystadenomas are extremely rare and most commonly presented with palpable abdominal mass, chronic right lower quadrant (RLQ) pain, or could be asymptomatic. We present a 51-year-old female with clinical picture of acute appendicitis and a giant mucinous cystadenoma of the appendix with low grade dysplasia.

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Appendiceal Mucocele: A Diagnostic Dilemma in Differentiating Malignant From Benign Lesions With CT

Abstract: Differentiating malignant from benign mucoceles can be difficult with CT. Irregular walls and soft-tissue thickening are features most likely to be associated with malignancy.

Cited by 73 publications

References 18 publications

Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

Acute Torsion of Appendicular Mucocele

Giant Mucinous Cystadenoma of the Appendix With Low Grade Dysplasia Presented as Acute Appendicitis: A Case Report and Literature Review

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