scholarly journals Rare Cases of Low-Grade Appendiceal Mucinous Neoplasm: Two Case Reports and a Literature Review

2019 ◽  
Vol 12 (2) ◽  
pp. 488-493
Author(s):  
Senichiro Yanagawa ◽  
Hisaaki Yoshinaka ◽  
Hidehiro Tanji ◽  
Shinya Kodama ◽  
Yukio Takeshima ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Abdominal Pain ◽  
Surgical Technique ◽  
Case Reports ◽  
Low Grade ◽  
Lower Quadrant ◽  
Mucinous Neoplasm ◽  
Appendiceal Mucocele ◽  
Mucinous Neoplasms ◽  
Right Lower Quadrant

Appendiceal mucocele (AM) is rare disease found in <1% of all appendectomy specimens. AM is often misdiagnosed as appendicitis because the most frequent symptom is right lower quadrant abdominal pain. AM should be considered in the differential diagnosis of abdominal pain. Although there are pathological classifications, surgical resection is accepted as the treatment to prevent the development of peritoneal pseudomyxoma (PP); however, the optimal surgical technique that must be used is unclear. We present two cases suspected of being AM prior to surgery that were pathologically diagnosed as low-grade appendiceal mucinous neoplasms. Each case progressed without developing PP. The surgical procedures we chose are considered appropriate for each case.

Manifestations of Pediatric Appendicopathia Oxyurica

2013 ◽  
Vol 79 (9) ◽  
pp. 873-874 ◽  
Author(s):  
Mary M. Jordan ◽  
Jennifer E. Sanders ◽  
Christina R. Stallworth ◽  
Scott Russell ◽  
Olivia Titus ◽  
...  
Keyword(s):  
Abdominal Pain ◽  
Acute Appendicitis ◽  
Ex Vivo ◽  
Low Grade ◽  
Enterobius Vermicularis ◽  
Lower Quadrant ◽  
First Case ◽  
Human Digestive Tract ◽  
The Right ◽  
Right Lower Quadrant

Enterobius vermicularis is a parasite that inhabits the human digestive tract. We present two pediatric patients with symptoms mimicking acute appendicitis who were found to have E. vermicularis infection. The first case is a 5-year-old female who presented with flank and abdominal pain associated with low-grade fever and anorexia. She had localized tenderness in the right lower quadrant and a leukocytosis with left shift. Intraoperative findings included a normal-appearing appendix, but ex vivo examination revealed Enterobius vermicularis. The second case is a 7-year-old female who presented with periumbilical abdominal pain, anorexia, and emesis. She had tenderness at McBurney's point, and ultrasound revealed a small echogenic focus within the appendix. Intraoperatively, the distal tip of the appendix appeared inflamed. Again, ex vivo examination revealed E. vermicularis. Enterobius vermicularis infection of the appendix can present with a clinical picture similar to acute appendicitis. In at-risk populations, it should be included in the differential diagnosis for children with right lower quadrant abdominal pain. Complete therapy requires treatment with mebendazole.

scholarly journals LAMN as a differential diagnosis for abdominal pain: a case report from Syria

2022 ◽  
Vol 2022 (1) ◽  
Author(s):  
Joudi Tarabishi ◽  
Alma Douedari ◽  
Tahreer Almasalmeh ◽  
Mario Tarzi
Keyword(s):  
Computed Tomography ◽  
Differential Diagnosis ◽  
Abdominal Pain ◽  
Adnexal Mass ◽  
Right Hemicolectomy ◽  
Low Grade ◽  
Computed Tomography Scan ◽  
Mucinous Neoplasms ◽  
Retroperitoneal Tumors ◽  
Tomography Scan

Abstract Low-grade appendiceal mucinous neoplasms (LAMNs) are papillary or flat mucinous tumors with low-grade cytologic atypia found in &lt;0.3% of appendectomy specimens among older population. They are the most frequent source of pseudomyxoma peritonei. They can be easily misdiagnosed, due to unspecific symptoms, with acute appendicitis, retroperitoneal tumors or adnexal mass. Macroscopically, the appendix may appear normal or be variably dilated. Microscopic study determines whether the studied specimen is LAMN or mucinous adenocarcinomas. We report a 77-year-old patient presented with 15-day abdominal pain accompanied with chills and hyperthermia. Decision was made for right hemicolectomy as a result of the findings on ultrasound and computed tomography scan. Diagnosis was made after the pathologic study, which revealedLAMN.

Mathematical Analysis of the Diagnostic Relevance of Clinical Findings

1979 ◽  
Vol 57 (5) ◽  
pp. 477-479 ◽  
Author(s):  
D. E. H. Llewelyn
Keyword(s):  
Differential Diagnosis ◽  
Abdominal Pain ◽  
Mathematical Analysis ◽  
Clinical Findings ◽  
Differential Diagnoses ◽  
Lower Quadrant ◽  
Quadrant Abdominal Pain ◽  
Right Lower Quadrant

1. The process of diagnosis by elimination in terms of probabilities is analysed mathematically. 2. A piece of evidence which is only associated with a small number of differential diagnoses is of particular importance. 3. To deal with a differential diagnosis, a feature is required which occurs commonly in a postulated diagnosis but rarely in its rivals, irrespective of its frequency in those already discriminated against. 4. By using this analysis, inadequate evidence may be identified, new tests developed, and their effectiveness assessed in a logical and efficient way. 5. The approach is illustrated by considering the differential diagnosis of localized right lower quadrant abdominal pain.

scholarly journals Intestinal obstruction caused by pericecal internal herniation

2020 ◽  
Vol 2020 (2) ◽  
Author(s):  
Floris B Poelmann ◽  
Ewoud H Jutte ◽  
Jean Pierre E N Pierie
Keyword(s):  
Abdominal Pain ◽  
Intestinal Obstruction ◽  
Acute Abdominal Pain ◽  
Treatment Preference ◽  
Treatment Modalities ◽  
Internal Herniation ◽  
Lower Quadrant ◽  
Surgical History ◽  
The Right ◽  
Right Lower Quadrant

Abstract Intestinal obstruction caused by pericecal internal herniation are rare and only described in a few cases. This case describes an 80-year-old man presented with acute abdominal pain, nausea and vomiting, with no prior surgical history. Computed tomography was performed and showed a closed loop short bowel obstruction in the right lower quadrant and ascites. Laparoscopy revealed pericecal internal hernia. This is a viscous protrusion through a defect in the peritoneal cavity. Current operative treatment modalities include minimally invasive surgery. Laparoscopic repair of internal herniation is possible and feasible in experienced hands. It must be included in the differential diagnoses of every patient who presents with abdominal pain. When diagnosed act quick and thorough and expeditiously. Treatment preference should be a laparoscopic procedure.

Appendicitis: a rare adverse event in colonoscopy

2021 ◽  
Vol 14 (7) ◽  
pp. e242523
Author(s):  
Samer Al-Dury ◽  
Mohammad Khalil ◽  
Riadh Sadik ◽  
Per Hedenström
Keyword(s):  
Emergency Department ◽  
Adverse Event ◽  
Abdominal Pain ◽  
Acute Appendicitis ◽  
Physical Examination ◽  
De Novo ◽  
Perforated Appendicitis ◽  
Lower Quadrant ◽  
The Right ◽  
Right Lower Quadrant

We present a case of a 41-year-old woman who visited the emergency department (ED) with acute abdomen. She was diagnosed with perforated appendicitis and abscess formation on CT. She was treated conservatively with antibiotics and discharged. On control CT 3 months later, the appendix had healed, but signs of thickening of the terminal ileum were noticed and colonoscopy was performed, which was uneventful and showed no signs of inflammation. Twelve hours later, she developed pain in the right lower quadrant, followed by fever, and visited the ED. Physical examination and blood work showed signs consistent with acute appendicitis, and appendectomy was performed laparoscopically 6 hours later. The patient recovered remarkably shortly afterwards. Whether colonoscopy resulted in de novo appendicitis or exacerbated an already existing inflammation remains unknown. However, endoscopists should be aware of this rare, yet serious complication and consider it in the workup of post-colonoscopy abdominal pain.

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.

Angiolipoma of the Colon with Right Lower Quadrant Abdominal Pain

1999 ◽  
Vol 16 (5) ◽  
pp. 441-444 ◽  
Author(s):  
Kazuya Kato ◽  
Minoru Matsuda ◽  
Kazuhiko Onodera ◽  
Hiromi Sakata ◽  
Tatsuo Kobayashi ◽  
...  
Keyword(s):  
Abdominal Pain ◽  
Lower Quadrant ◽  
Quadrant Abdominal Pain ◽  
Right Lower Quadrant
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