1/62. Intracranial inflammatory tumors: a survey of their various etiologies by presentation of 5 cases.Due to similar clinical and neuroradiological features, intracranial inflammatory tumors (IITs) are frequently misdiagnosed as brain neoplasms, from which they notably differ in respect to therapy and prognosis. In this article, five cases of such tumors are presented. Three of the patients with brain tumors (cases 3, 4 and 5) presented a history of 'pararheumatic' syndromes but no diagnosis of defined immunopathies. On the basis of radiological findings, all processes were classified as genuine brain neoplasms, but histology showed reactive inflammatory features. The possible etiologies of these 'tumors' are discussed on the basis of all clinical and histological data of the patients. The spectrum of diseases potentially leading to the manifestation of an IIT is reviewed. Additionally, the presentation of case 5, who developed a highly malignant B-cell-lymphoma 6 months after the removal of an IIT without any histological signs of atypia, shows that this differential diagnosis always has to be kept in mind.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/62. Arteriovenous malformation of the forehead, anterior scalp, and nasal dorsum.Management of complex and relentless large arteriovenous malformations with long term control and acceptable aesthetic results can be accomplished. This outcome requires selective intra-arterial embolization, judicious surgical resection, composite reconstruction with free tissue transfer, other ancillary procedures, or both, and careful serial follow-up examinations to rule out recurrent or persistent disease.- - - - - - - - - - ranking = 0.032877806122449keywords = complex (Clic here for more details about this article) |
3/62. A case of lymphocytic infundibuloneurohypophysitis: histophathological studies.A 57-year-old woman presented with 2-year history of polyuria and polydipsia. Hormonal studies revealed almost normal anterior pituitary function and central diabetes insipidus. magnetic resonance imaging showed thickening of the pituitary stalk and enlargement of the neurohypophysis without high intensity of the posterior lobe on T1-weighted images, which were compatible with lymphocytic infundibuloneurohypophysitis. Transsphenoidal biopsy was done and histological examination disclosed moderate fibrosis and lymphocytic infiltration not only in the posterior pituitary, but also in the adjacent anterior pituitary part of the gland. The lymphocytes both in the anterior and posterior pituitary were mainly T cells that were positive for UCHL 1, CD 3, and CD 8. Immunofluorescence of frozen tissue detected immunecomplex deposition in small vessels and the interstitium. These findings suggested that allergic reactions may play an important role in the pathogenesis of lymphocytic infundibuloneurohypophysitis.- - - - - - - - - - ranking = 0.032877806122449keywords = complex (Clic here for more details about this article) |
4/62. Inflammatory myositis: a rare differential diagnosis of a neck lump.Inflammatory myositis is an extremely rare benign inflammatory condition of skeletal muscle. It usually affects the extremities, and there are only 10 cases reported in the head and neck region. Its significance is that in this region it can be clinically mistaken for a neoplasm. We describe a case and review the literature.- - - - - - - - - - ranking = 0.5keywords = neoplasm (Clic here for more details about this article) |
5/62. Fine needle aspiration cytology of hepatobiliary cystadenoma with mesenchymal stroma.BACKGROUND: Hepatobiliary cystadenomas (HBCs) with mesenchymal stroma (MS) are rare cystic neoplasms occurring exclusively in women. Hepatobiliary cystadenoma consists of a mucin-producing cyst lining epithelium underlined by a dense MS cell layer. In the current study, the authors review the fine needle aspiration cytology of HBC with MS and identify characteristic cytologic features that suggest such an uncommon neoplasm on aspirates. methods: A search of the histopathology files at the University of texas Medical Branch at Galveston for the interval of January 1992 through December 2000 yielded four cases of HBC having both cytologic and histologic specimens. The cytologic features of the aspirates were reviewed and correlated with the clinical history, radiologic findings, and the histopathology of the excised specimens. RESULTS: All four patients were middle-aged women (mean age, 48.5 years) who presented with epigastric pain radiating to the back, due to large cystic lesions in the right liver lobe (three patients) or the left liver lobe (one patient). Aspiration cytology revealed chronic inflammatory exudate in all cases, along with occasional aggregates of bland, cuboidal-columnar epithelial cells (in three cases), which rarely arranged in papillary clusters. No significant atypia, evidence of malignancy, or MS cells were identified on the aspirates. HBC with MS was confirmed histologically on the excised specimens in all cases. CONCLUSIONS: By ensuring adequate sampling and correlating with consistent clinical and radiologic findings, a diagnosis of HBC or cystic hepatobiliary neoplasm can be suggested on the basis of aspiration cytology.- - - - - - - - - - ranking = 1.5keywords = neoplasm (Clic here for more details about this article) |
6/62. The inflammatory polyp-fold complex in children.The inflammatory polyp-fold complex (IPFC) is an uncommon endoscopic or radiologic finding in children. In this complex, an inflammatory polyp at the gastroesophageal junction is present, often in continuity with a prominent gastric fold. Histologically, there is an inflammatory infiltrate in otherwise benign gastric and esophageal mucosa. We report four cases of IPFC in children, all associated with reflux esophagitis. In two patients who underwent repeat endoscopy, acid suppression therapy led to a decrease in the size of the polyp and histologic improvement of esophagitis. Four case studies in children with IPFC are presented, followed by a literature review of this endoscopic finding as it applies to children.- - - - - - - - - - ranking = 0.19726683673469keywords = complex (Clic here for more details about this article) |
7/62. Xanthogranulomatous ureteritis.A case of xanthogranulomatous ureteritis is described and the numerous similarities with xanthogranulomatous pyelonephritis in their clinicopathological presentation are discussed. Of the xanthogranulomatous pyelonephritis symptoms our patient manifested a long history of urinary tract infection, weight loss, urinary obstruction, pyuria and gram-negative bacteriuria. The ureteral lesion was a yellowish nodule, granulomatous and was highlighted histologically by foamy histiocytes with periodic acid, Schiff positive cytoplasmic granules. The lesion mimicked an obstructing neoplasm and a specific granuloma.- - - - - - - - - - ranking = 0.5keywords = neoplasm (Clic here for more details about this article) |
8/62. barotrauma secondary to inflammatory maxillary sinus polyp: a case report.Sinus barotrauma, secondary to mucosal disturbances, is a common finding within the aviation community. Multiple etiologies have all led to mucosal inflammation and thickening with potential obstruction of the sinus osteomeatal complex, especially during the barometric changes of flight. Obstruction can, therefore, lead to problems with sinus pressure equilibration with atmospheric pressure, and can lead to barosinusitis. We present a case of a U.S. Air Force Command Pilot with acute left sinus barotrauma during descent while flying a T-37 aircraft, along with a brief review of the pathophysiologic processes involved during barotrauma. An inflammatory polyp within his sinus was identified by plain radiography, confirmed with computed tomography, and subsequently excised. The patient had complete resolution and clearance to fly after an uneventful 4-wk convalescence and altitude chamber flight. This is the first case of sinus barotrauma secondary to an inflammatory maxillary sinus polyp, confirmed by histologic diagnosis, reported in the aeromedical literature.- - - - - - - - - - ranking = 0.032877806122449keywords = complex (Clic here for more details about this article) |
9/62. Inflammatory myofibroblastic tumour of the liver in a child: CT and MR findings.Inflammatory myofibroblastic tumour of the liver is a rare disease in children and is characterized by an inflammatory mass of uncertain aetiology which simulates a true neoplasm, often resulting in a diagnostic dilemma. We report a pathologically proven case of inflammatory myofibroblastic tumour of the liver in a 14-month-old boy with jaundice. CT and MRI showed an ill-defined, homogeneously enhancing mass located in the hilar portion of the liver with biliary obstruction. He underwent percutaneous transhepatic biliary drainage to relieve obstructive jaundice, followed by lobectomy and, finally, liver transplantation.- - - - - - - - - - ranking = 0.5keywords = neoplasm (Clic here for more details about this article) |
10/62. Xanthogranulomatous choledochitis: a previously undescribed mass lesion of the hepatobiliary and ampullary region.Solid liver and pancreatic masses are commonly neoplastic in nature; however, inflammatory lesions mimicking carcinoma are at times encountered in these sites. We report two cases of previously undescribed inflammatory mass lesions of the liver and pancreas that originated in the biliary tract. Detailed clinical and histologic evaluations were performed in two patients who underwent right partial hepatic lobectomy and Whipple's resection for presumed hepatic and pancreatic neoplasms. In case 1, with a remote history of cholecystectomy and recent extraction of a stone from the common bile duct, a liver mass in segment 6 was discovered incidentally. In case 2, a periampullary pancreatic mass was diagnosed radiographically following papillotomy and stent insertion for stricture and biliary calculous disease. The histologic findings in both cases were similar, localized around a part of the biliary tract, and consisted of inspissated bile, acute and chronic inflammation, abundant lipid-laden macrophages, fibrosis, and giant cell reaction. No neoplasm was identified. On the basis of the close resemblance of these features to those seen in xanthogranulomatous cholecystitis, the lesions seen here were termed xanthogranulomatous choledochitis. In conclusion, xanthogranulomatous choledochitis is a benign inflammatory process involving the biliary tract that can form a mass lesion within the liver or pancreas and thus mimic a neoplasm. Extensive sampling of the lesion is required to rule out an underlying neoplastic process. In our patients a propensity to form lithogenic bile and a prior history of biliary tract operative procedure were present.- - - - - - - - - - ranking = 1.5keywords = neoplasm (Clic here for more details about this article) |
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