Right lower quadrant pain is a symptom with an exceptionally broad differential diagnosis. Intussusception of the appendix is a very uncommon condition with many manifestations. Additionally, the pathologic finding of ectopic presence of a mixture of at least two mullerian-derived tissue components is rare. This report presents the case of a 49-year-old woman who presented twice with acute righ...

Endometriosis is a common disease generally, but appendiceal endometriosis causing acute appendicitis is a very uncommon clinical phenomenon and a few cases have been reported. The authors aim to highlight the rarity of such clinical entity in Nigeria. A 29 year old nulliparous woman presented with severe right iliac fossa pains, tenderness and rebound tenderness on her second day of menstruati...

PURPOSE Appendiceal tumors are a heterogeneous group of diseases that include typical neuroendocrine tumors (TNET), goblet cell carcinoids (GCC), and atypical GCC. Atypical GCC are classified into signet-ring cell cancers (SRCC) and poorly differentiated appendiceal adenocarcinoids. The prognosis and management of these diseases is unclear because there are no prospective studies. The aim of th...

Low grade appendiceal mucinous neoplasms can spread to the peritoneum as pseudomyxoma peritonei even though they are not obviously invasive in the appendix. During the past several decades, several problematic issues surrounding this enigmatic tumor have been debated in the literature, including appropriate nomenclature for the appendiceal tumors and their peritoneal metastases. In this article...

OBJECTIVE To report the prevalence of appendiceal disease in women with chronic pelvic pain undergoing laparoscopy for possible endometriosis, summarize the literature, and more accurately estimate the prevalence of endometriosis of the appendix. DESIGN Prospective case series and literature review. SETTING Academic research institute. PATIENT(S) One hundred thirty-three patients with chr...

Appendiceal orifice inflammation (AOI) is observed as skip lesion in distal ulcerative colitis (UC). The endoscopic frequency of AOI is reported to be 7.9% to 76% of distal colitis. UC is a relapsing and remitting disease and a morphological change of the large bowel occurs over time. Patient and physician can easily understand the shape of the whole large bowel not through endoscopic photograp...

PURPOSE Endometriosis is defined as functioning endometrial tissue outside of the uterus. Endometriosis of the appendix is uncommon. Its clinical presentation varies from asymptomatic to acute abdominal pain. The aims of this study were to describe our experience of managing patients with appendiceal endometriosis and to review the clinical characteristics of this medical condition. METHODS F...

Appendiceal diverticulosis is a rare entity. An inflamed appendix has a higher perforation rate if associated with diverticulitis. Barium enema and computed tomography are useful in demonstrating this lesion and its associated complications. This article describes the radiographic findings in a Chinese patient with appendiceal diverticulosis, together with a brief literature review.

We report the case of a patient with appendiceal adenocarcinoma with mucinous peritoneal carcinomatosis who was treated with trametinib upon identification of a GNAS R201H mutation by comprehensive genomic profiling. The molecular pathology of appendiceal neoplasms is reviewed, and the mechanistic basis underlying the clinical benefit as well as the subsequent course on trametinib that were obs...

Although complicated acute appendicitis is occasionally observed in general practice, the diagnosis of appendiceal abscess by colonoscopy is unusual. We report a case of appendiceal abscess with spontaneous drainage into the lumen of colon diagnosed during colonoscopy and resolved by the time of surgery.