共查询到20条相似文献,搜索用时 0 毫秒
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Tuberculous lymphadenitis is a common extrapulmonary tuberculosis. Its incidence is about 28%. Pulmonary hilar lymphadenitis and mediastinal lymphadenitis are often visible in the routine chest X-ray films during pulmonary tuberculosis. But abdominal lymphadenitis are difficult to detect on this method. Computed tomography is a useful tool to detect the tuberculous lymphadenitis both mediastinal and abdominal. The active tuberculous lymphadenitis shows characteristic findings with contrast enhanced CT, central low attenuation and peripheral rim enhancement were seen. On the contrary homogeneous without low attenuation area and with calcification were inactive tuberculosis. Bacterial diagnosis is difficult and PCR method is effective for detect the tuberculosis. Usual anti-tuberculous chemotherapy were performed for the tuberculous lymphadenitis and effective but on the fistula formation surgical procedure are also performed. 相似文献
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Tuberculous enteritis occurs in about 2 percent of patients with pulmonary tuberculosis. Although it is uncommon in the United States, tuberculous enteritis should be considered in any patient with active pulmonary tuberculosis and abdominal complaints. Eight cases of T. enteritis have been treated at Harbor General Hospital in the last 25 years. Associated pulmonary disease was shown radiologically to be present in seven of eight patients. Findings on contrast studies of the gastrointestinal tract showed disease in six of six patients examined. In five patients, surgical operation was required for diagnosis or complications. Resection of diseased bowel with primary anastomosis was done in five patients. Although medical therapy is the mainstay in the treatment of both pulmonary and intestinal tuberculosis, one staged resection of diseased bowel with primary anastomosis is the procedure of choice for complications such as obstruction, hemorrhage or perforation. 相似文献
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We report uncultured rod-shaped magnetotactic bacteria from natural waters that biomineralize magnetic crystals in two different size ranges. Electron spectroscopic imaging of whole bacteria deposited over formvar-coated grids permitted a better visualization and measurement of the magnetosomes. All magnetosomes of individual bacteria could be observed by this technique. The magnetosomes formed one large chain, composed of three to four columns of crystals, disposed in parallel to the main axis of the bacteria. The magnetosomes ranged from 19 to 136 nm in length and 14 to 112 nm width. Smaller magnetosomes (less than 80 nm in length) localized mostly in extremities of the bacterial body while larger preferentially localized in the middle part of the cell. Electron spectroscopic diffraction and X-ray microanalysis indicate that both types of magnetosomes contain magnetite (Fe3O4). In projection, most magnetosomes seem to present pseudo-hexagonal morphologies described for magnetite. As the aspect ratios for smaller and larger magnetosomes are different, we suggest that different levels of control on biomineralization of magnetosomes may exist. 相似文献
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Proximal duodenal obstruction due to tuberculosis can masquarade as duodenal ulcer. Although commonest cause of duodenal obstruction is ulcer, other causes must be considered, particularly tuberculosis which is common in tropics. 相似文献
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Intestinal tuberculosis is a rare disease in western countries and may mimic a variety of gastrointestinal disorders. Here, we report the case of a 63-yr-old patient who presented with profuse bleeding from a deep rectal ulcer. Similar lesions were found in different parts of the colon. Multilocular colorectal carcinoma was suspected based on the macroscopic appearance. Histology, however, suggested Crohn's disease. Intestinal tuberculosis was initially ruled out by negative staining for acid-fast bacilli, mycobacterial culture, and polymerase chain reaction analysis. A treatment for Crohn's disease was started. Endoscopic reexamination revealed progressive disease with extensive ulcerations of the terminal ileum. Histopathological examination then revealed acid-fast bacilli in the colonic mucosa typical for mycobacterium tuberculosis infection. This case emphasizes the need to include intestinal tuberculosis in the initial differential diagnosis of ulcerative colorectal lesions also in the western population. 相似文献
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JO Keck RJ Staniunas JA Coller RC Barrett ME Oster 《Canadian Metallurgical Quarterly》1995,38(1):72-79
PURPOSE: The pathophysiology of anal fissure remains poorly understood. This study examines manometric findings in patients with anal fissure with use of a computer-assisted system, which helps to standardize manometric performance as well as generating longitudinal and cross-sectional profiles of the anal canal. METHODS: Water-perfused, eight-channel, computer-assisted manometry was performed on 12 patients with chronic anal fissure and compared with 12 age-matched and sex-matched controls. RESULTS: Mean maximum average resting pressure (MARP) was 120.5 mmHg in patients and 82.6 mmHg in controls (P = 0.0005). Pain was felt during manometry in six patients. In these patients, MARP was 123.2 mmHg, and, in the other six patients, MARP was 117.8 mmHg. Sphincter length was 4.72 cm, and the high pressure zone or that part of the sphincter with pressure more than 50 percent of MARP) was 2.78 cm in length. The high pressure zone/sphincter length ratio was 58 percent compared with 48 percent in controls. Longitudinal profile was bell shaped. Elevated pressures were not confined to the site of the fissure. Cross-sectional analysis showed higher anterior pressures in the distal sphincter. Ultraslow waves were seen in as many as 91 percent of patients and 73 percent of controls. However, ultraslow wave amplitude was 31 mmHg in patients and 15 mmHg in controls (P = 0.03). The rectoanal reflex was normal; overshoot was not seen. CONCLUSIONS: The primary abnormality in fissure is persistent hypertonia affecting the entire internal sphincter, unrelated to pain. Cross-sectional pressure profiles may explain the predilection of fissures to occur in the posterior midline; other factors must prevent chronic fissures from healing. 相似文献
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S Svane 《Canadian Metallurgical Quarterly》1996,116(8):962-964
According to the literature, bovine tuberculosis in man has been an illness of minor importance in Norway, unlike in Sweden and Denmark. This situation cannot be explained, since in former days infected cattle were a problem in the southeastern part of the country in particular. No case of bovine tuberculosis in humans has been reported in Norway since 1940. Recently we have observed a 29-year-old female immigrant from India with cervical lymph node tuberculosis caused by M. bovis. A second case is a 77-year-old Norwegian male. In the 1920s, at the age of ten, he was infected in Norway by drinking raw milk from tuberculous cattle. He developed tuberculosis of the mesenterial lymph nodes. Neither of these patients had tuberculosis in any other part of their body. Previous Norwegian reports, covering eight cases, are summarized. 相似文献
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Sulfur mustard (HD) is a chemical warfare blister agent. The biochemical basis of HD-induced vesication is unknown, and no antidote currently exists. Basal epidermal cells are a major site of HD toxicity in vivo, with inflammation and HD-increased proteolytic activity implicated as factors that contribute to HD pathology. Fc receptors (FcR) bind to the Fc region of antibody to mediate many effector and regulatory functions that can influence inflammatory responses. FcR are found on all types of immune cells and are also expressed on the surface of human keratinocytes. Assay by fluorescent antibodies demonstrated significantly enhanced CD32 (FcRII) and CD16 (FcRIII) on human epidermal keratinocyte (HEK) cell cultures at 8 to 24 h after exposure to HD (50, 100 and 200 micromol/L). The enhanced CD32 was time- and concentration-dependent and agreed well with the time course of increased proteolysis and cutaneous pathology observed during HD vesication. HD-increased FcR on the surface of HEK might be a mechanism of vesication. 相似文献
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T Yokoyama T Masaki M Ono M Shinozaki T Muto 《Canadian Metallurgical Quarterly》1998,28(11):1179-1181
We report herein the cases of two patients with ulcerative colitis complicated by massive hemorrhage who were successfully treated by per anal suturing of a bleeding ulcer. A 40-year-old woman and a 22-year-old man had suffered from extensive colitis for 8 and 2 years, respectively, and both followed a similar clinical course. They were admitted under emergency conditions and, despite treatment with intravenous high-dose prednisolone and thereafter with intraarterial injections of prednisolone, suffered several attacks of massive hemorrhage with hypovolemic shock. Emergency subtotal colectomy with ileostomy and rectal mucous fistula were performed, but recurrent massive hemorrhage occurred during the early postoperative period. Bleeding from a discrete ulcer in the rectum was subsequently located, and both patients underwent per anal suturing of the ulcer. No recurrent bleeding occurred thereafter, and an ileoanal anastomosis was performed several months later. Massive hemorrhage is a rare complication of ulcerative colitis which is most often resolved by subtotal colectomy without proctectomy. Although bleeding associated with ulcerative colitis usually occurs diffusely, these case reports serve to demonstrate that massive bleeding can also result from a discrete ulcer. We advocate that this condition be treated by an endoscopic or local hemostatic procedure. 相似文献
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S Gangi U Prosperini MP Costanzo M Lauria F Basile 《Canadian Metallurgical Quarterly》1995,66(3):393-396
Faecal incontinence is an important disabling symptom in the affected patients. Classically, we divide faecal incontinence in two main types: neurogenic faecal incontinence and traumatic anal incontinence. Traumatic anal incontinence is due to causes damaging sphincteric mechanism directly. The aim of the present study was to evaluate the outcome of overlapping sphincter anal repair procedure in the management of traumatic anal incontinence. To this end we studied 27 patients with traumatic anal incontinence who underwent an overlapping sphincter anal repair procedure according to the method described by Parks and McPartlin in 1971. Mean follow up was up three years and was based mainly both on clinical evaluation with anorectal exploration and manometric values carried out on a 6 monthly basis. When the outcome was evaluated in terms of faecal continence our date were similar to those reported by Parks and Fang. In the subjects studied we haven't reported any major complications apart from one case of abscess, one case of wound's infection and one case of stenosis which were efficaciously treated. Our findings supported the view that overlapping sphincter anal repair procedure is the surgical approach of choice in the patients with traumatic anal incontinence. 相似文献
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The myelin sheath and axon areas in the sciatic nerve of 20 adult rats were studied using the video-point-counting method (Quantimet). This automatic measurement procedure allows an exact and rapid determination of the above mentioned areas as a result of the differing intensities of the structures. The electron-microscopic pictures are projected at a magnification of 3500 onto the monitor through a lens system from a Vidikon-TV-tube, objective 32 mm. The areas of single nerve cross-sections, myelin sheath areas and total area are then measured. These area values are stated in picture points which can be calculated to absolute values. The statistical evaluation of both parameters shows a linear regression with a correlation coefficient of 0.94. These values are compared with the results obtained using the conventional manual methods of other authors, e.g. determination of lamellae number or myelin sheath thickness as well as axon circumference or axon diameter. The special advantages of this procedure are thereby pointed out. 相似文献
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I Claro CN Leit?o P Oliveira J Correia JD da Costa JM Almeida FC Mira 《Canadian Metallurgical Quarterly》1996,43(12):1653-1655
Tuberculous mesenteric lymphadenitis is a rare clinical entity and non-surgical diagnosis of this condition remains a challenge. A 38-year-old Indian woman presented with a six-week history of epigastric pain, low-grade fever and anorexia. Upper endoscopy showed a gastric ulcer of the posterior wall of the stomach. On CT scan there was a 8 cm abdominal mass involving the pancreatic body and tail and the endoscopic ultrasonography was also compatible with a cystic pancreatic tumor which had eroded into the stomach. An exploratory laparotomy was performed and the diagnosis of tuberculous mesenteric lymphadenitis was confirmed by bacteriological and histological examinations. Medical therapy was started after surgery. At 18 months she is asymptomatic and abdominal CT scan is normal. Tuberculosis of mesenteric lymph nodes usually raises serious diagnostic problems. A high grade of suspicion is necessary in order to perform a pre-operative diagnosis. 相似文献