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Query: UMLS:C0085693 (acute appendicitis)
 3,606 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Adult intussusception is very rare. We report 2 unusual cases, a 58-year-old man with a transverse colo-colonic intussusception caused by a malignant sessile polyp that also had an asymptomatic synchronous neoplasm of the kidney, and an 18-year-old female with an ileocecolic intussusception caused by acute appendicitis. This report stresses the point that intussusception in adults may represent an underlying malignancy. The age of the patient and the anatomic location of the intussusception provide significant input as to the etiology and hence the most appropriate surgical procedure.
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PMID:Two unusual cases of adult intussusception. 1211 29

Isolated inflammatory alterations of the greater omentum are rare diseases. Since the preoperative diagnosis is difficult these changes are usually ascertained upon laparotomy. Between 1999 and 2001 four patients (44-88-years-old, 2 males) underwent laparotomy for an inflammatory tumor mass or an acute abdomen, respectively. C-reactive protein was elevated in all cases. In two cases a primary torsion of the greater omentum was found, in the other two a paracolic pseudotumorous omentitis. Resection of the diseased omental parts led to complete recovery. Torsion of the greater omentum and omentitis cause abdominal symptoms with an inflammatory component that often mimics other more common diseases such as acute appendicitis and urges laparotomy. Partial omentectomy is the therapy of choice.
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PMID:[Inflammatory alterations of the greater omentum--a difficult preoperative diagnosis]. 1212 94

A rare case of primary adenocarcinoma of the vermiform appendix (less than 250 cases described in the literature) in a 36 year-old female patient presenting signs and symptoms of an acute appendicitis is reported. Adeno-carcinoma of the vermiform appendix is a rare neoplasm of the gastrointestinal tract with an incidence of about 0,01-0,2%. Usually the diagnosis of adenocarcinoma of the vermiform appendix is difficult because symptoms and signs are not pathognomonic. In the case described, the diagnosis was intra and postoperative and confirmed by the pathological examination of the surgical specimens. At laparotomy, performed under suspicion of an acute appendicitis, disseminated disease was discovered, characterized by the involvement of the two ovaries, the left colon, the cecum, the vermiform appendix, with a peritoneal carcinosis and a hydroureteronephrosis. According to the dissemination of the disease, the surgical treatment was right hemicolectomy, anterior resection of left colon, bilateral oophorectomy and omentectomy. The post-operative course was regular. Adjuvant therapy was performed for 6 cycles, with 5FU and oxaliplatinum. The patient is still alive after 6 months and there is no sign of progression of the disease. A mild left hydroureteronephrosis is persistent.
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PMID:[Primary adenocarcinoma of the appendix. Case report and review of the literature]. 1237 Jun 73

Most cases of malignant mesothelioma present with obvious diffuse tumor, and the presence of grossly visible diffuse tumor is usually cited as an important criterion for making the diagnosis. We report four cases of unsuspected malignant mesothelioma of the peritoneum presenting as localized acute inflammatory lesions. The clinical diagnoses were acute appendicitis in two cases, acute cholecystitis in the third case, and incarcerated umbilical hernia in the fourth case. In all cases tumor was not evident at initial surgical exploration or on gross pathologic examination, and the diagnosis was only made on microscopic examination of the resected specimens. All cases showed a tubulopapillary form of epithelial mesothelioma with obvious tissue invasion, but the foci of tumor were too small to be seen grossly or were present deep in fibrous tissue. On follow-up all patients developed grossly evident tumor, and one of these patients is alive without evidence of disease 5 years after presentation. We conclude that peritoneal mesotheliomas may occasionally present as inflammatory processes without grossly evident tumor and can be diagnosed by microscopic findings alone.
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PMID:Malignant mesothelioma of the peritoneum presenting as an inflammatory lesion: a report of four cases. 1254 73

Appendicitis can rarely occur in association with carcinoma of the caecum, particularly in elderly patients. We report a case of acute appendicitis provoked by an adenocarcinoma of the caecum which obstructs the lumen of the appendix in a 58-year-old man. The patient underwent an ileocaecal resection with lymph node dissection. The difficulties of identifying a small tumor at laparotomy and the implication for optimal treatment are emphasized.
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PMID:Appendicitis caused by caecal carcinoma: report of a case. 1265 73

We report two cases of amoeboma of caecum. The patients were initially diagnosed with acute appendicitis but a large cecal mass was found on surgery, giving the gross impression of tumor, Ileocaecal tuberculosis or Crohn's disease necessitating right hemicolectomy. On histopathological examination, the mass was found to be 'Amoeboma'. Mode of presentation, clinical examination and operative findings are presented along with the review of literature.
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PMID:Caecal amoeboma simulating malignant neoplasia, ileocaecal tuberculosis and Crohn's disease. 1268 60

Adenocarcinoid of the appendix is a rare tumor with the histological features of both adenocarcinoma and carcinoid tumor. However, its biological behavior and malignant potential are still unclear. We treated two patients with this unusual tumor; a 60-year-old man and a 79-year-old woman. Both patients were initially diagnosed with acute appendicitis followed by an appendectomy. At surgery, the appendix was seen to be acutely inflamed without any macroscopic signs of tumor. Postoperative histological analysis revealed an adenocarcinoid tumor in the appendix, which had spread diffusely into its wall without forming a mass. Immunohistochemical staining with p53, MIB-1, bcl-2, and carcinoembryonic antigen suggested that neither of these tumors were particularly aggressive. Adenocarcinoid of the appendix is a rare tumor, which is very difficult to diagnose preoperatively and even macroscopically, making histological examination essential.
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PMID:Adenocarcinoid of the appendix: report of two cases. 1273 35

Although uncommon, primary appendiceal neoplasms often result in clinical symptoms that may lead to abdominal imaging. Acute appendicitis from luminal obstruction is the most common manifestation for most tumor types. Other manifestations include intussusception, a palpable mass, gastrointestinal bleeding, increasing abdominal girth (from pseudomyxoma peritonei), and secondary genitourinary complications. Asymptomatic appendiceal neoplasms may be discovered incidentally. Mucoceles from either benign or malignant mucinous neoplasms represent the majority of appendiceal tumors detected at imaging but are the least likely to manifest as appendicitis. Pseudomyxoma peritonei is a common manifestation of mucinous adenocarcinoma. Colonic-type (nonmucinous) adenocarcinoma of the appendix is much less common than mucinous tumors and typically manifests as a focal mass without mucocele formation. Carcinoid tumor is the most common appendiceal neoplasm but is less often detected radiologically because it is typically small and relatively asymptomatic. Goblet cell carcinoid tumor and non-Hodgkin lymphoma of the appendix are rare and usually infiltrate the entire appendix. Cross-sectional imaging, particularly computed tomography (CT), is effective in the evaluation of these neoplasms. CT appears to be the modality of choice whenever an appendiceal mass is suspected. CT will help rule out or confirm an appendiceal tumor and may suggest a more specific diagnosis.
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PMID:Primary neoplasms of the appendix: radiologic spectrum of disease with pathologic correlation. 1274 Apr 66

The Authors report three cases of appendiceal carcinoids, found during appendectomy for acute appendicitis during the last 15 years. Appendiceal carcinoid is a rare neoplasm, more frequent in females age ranging between 20 and 29 years. Lack of symptoms explains the occasional diagnosis of this disease. The prognosis is related mostly to the size of the tumor, local and lymphatic invasion, presence of metastases, localization inside the appendix, histological type and age of the patient. Therapy is mainly surgical and consists of appendectomy and right colectomy according to different criteria which are being discussed in this article.
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PMID:[Appendiceal carcinoid: report of 3 clinical cases and review of the literature]. 1294 73

The role of surgery in intraabdominal Burkitt's lymphoma remains controversial and different opinions are present in the literature. In our institution, forty patients (30 boys and 10 girls) with intraabdominal Burkitt's lymphoma with ages ranging from 3 to 12 years have been treated and followed from 1989 through 2000. In ten cases, the patients underwent surgery because of their acute abdominal diseases (intestinal obstruction in 5, intussusception in 3, intestinal perforation in one, and acute appendicitis in one). The remaining thirty patients were referred to our clinic because of their abdominal masses, pain, anorexia and fatigue. Twelve children had localized tumors and total resection could be performed. There was one death in this group due to central nervous system involvement during chemotherapy. In the remaining 28 children, extensive intraabdominal diseases were detected. In four of them, debulking procedures were performed, while in 24 children only biopsies could be made; 8 of them underwent a second-look operation. In the debulking procedures group, two children were lost (50 %) due to tumorlysis and acute renal failure. In the biopsy group, there were six deaths (25 %). All patients received chemotherapy after operative recovery. In conclusion, our results suggest that when the tumor is localized, total resection results in a good outcome. However, in the presence of extensive intraabdominal diseases instead of resection, the operation should be limited to biopsy only.
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PMID:The role of surgery in intraabdominal Burkitt's lymphoma in children. 1368 Apr 91


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