No abstract available.
Aorta, Thoracic*

Primary role of ultrasound in patients with thyroid nodule is to determine the multiplicity and detect occult carcinoma. We analyzed US findings of 53 thyroid carcinomas with multiple nodular lesions from january 1988 to december 1991. The results were as follows: 1. 109 malignant nodules in 53 cases and 24 benign in 23 were comfirmed. 2. The nature of the masses were solid in 72 malignant nodules (74.2%), and complex in 25 (25.8%) of which 19 were predominantly solid. 3. The echo pattern of the solid and solid predominant masses were hypoechoic in 78 malignant nodules (80.4%), hyperechoic in 10 (10.3%), and isoechoic in 3 (9.3%) 4. Internal punctate calcifications within the masses were observed in 31 malignant nodules (31.9%). 5. Halo sign was present in 16 malignant nodules(16.5%). 6. The preoperative sonographic diagnosis of thyroid carcinoma was made in 39.4% of 53 cases with multiple nodules on US. In conclusion, the number, and halo formation of nodules were insignificant to differentiate the benign nodule from the malignant. The heterogeneous hypoechoic nodules with size greater than 4cm, multiple stippled calcifications, displacement of the trachea or other surrounding structures of combined lymph node enlargements seem to indicate the possibility of malignancy.
Diagnosis ; Goiter* ; Humans ; Lymph Nodes ; Thyroid Gland* ; Thyroid Neoplasms* ; Thyroid Nodule ; Trachea ; Ultrasonography

BACKGROUND: The self-inflating bag-valve resuscitator is an useful breathing support equipment in the cardiopulmonary resuscitation, the transportation of patients who required ventilation assist, or respiratory therapy. The inspiratory oxygen concentration (FiO2) or tidal volume (VT) delivered to the patient depends on various conditions during bag-valve ventilation. METHODS: During bag-valve ventilation without a reservoir at oxygen flow rates of 10 l/min, we evaluated fifty six volunteers to determine the FiO2 and VT at ventilatory frequencies of 10, 12 and 15 cycles per minute and to observe the effect of hand size and grasp power on FiO2 and VT in two-hand compression methods. RESULT: The FiO2 at frequency of 10 cycles/min were 50.1% and it was higher than other ventilatory frequencies. However, the VT was not statistically different among the changes of ventilatory frequency. In the change of VT according to characteristics of the hand, the operator's hand size exerted influence on VT(larger vs. smaller ; 942ml vs. 885ml, p<0.05), but the grasp power of the hand did not significantly affect. Separate analyses with size or grasp power of the hand failed to reveal significant differences of the FiO2. CONCLUSION: The results suggest that a slowing of ventilatory frequency within the allowable ranges for adequate gas exchange increase the FiO2 during bag-valve ventilation without reservoir, and that hand size may exert influence on the VT without FiO2 changes but grasp power may not be a contributing factor to the VT or FiO2 changes.
Cardiopulmonary Resuscitation ; Hand Strength ; Hand* ; Humans ; Oxygen* ; Respiration ; Respiratory Therapy ; Tidal Volume* ; Transportation of Patients ; Ventilation* ; Volunteers

PURPOSE: To evaluate CT findings of internal hernia. MATERIALS AND METHODS: Three patients with internal hernia had abdominal CT scans and two of them had small bowel follow through examinations. The CT features of two patients with retroanastomotic and one patient with left paraduodenal hernia were evaluated and correlated with small bowel follow through examinations, and surgical findings. Two patients with retroanastomotic hernia had a history of subtotal gastrectomy with antecolic gastrojejunostomy. The diagnosis of internal hernia was made on the basis of surgical find ings in two patients of retroanastomotic hernia, and characteristic barium study findings in one patient of left paraduodenal hernia. RESULTS: The small bowel follow through examination showed small bowel loops gathered in a circumscribed mass in the left mid abdomen, and delay in passage through these loops. In case of left paraduodenal hernia, abrupt narrowing of the distal duodenum could be identified. The characteristic CT findings of all three patients were whorling of the mesentery and mesenteric vessels in the left mid-abdomen. In the patient with left paraduodenal hernia, after resolution of the gastrointestinal symptoms, a follow-up CT scan showed spontaneous disappearance of whorling of the mesentery and mesenteric vessels suggesting spontaneous resolution of the hernia. In the other two cases, upon exploration of the abdomen, dilatation of afferent duodenum caused by adhesion between ligament of Treitz and adjacent bowel walls, and retro- anastomotic herniation of the efferent loops were found. CONCLUSION: The usual diagnosis of internal hernia is based on the appearance of the small bowel follow through examination. However, we consider that the whorling appearance(we call it whorling sign) of the mesentery and mesenteric vessels on CT scan is also suggestive of internal hernia in patients under clinical suspicion.
Abdomen ; Barium ; Diagnosis ; Dilatation ; Duodenum ; Follow-Up Studies ; Gastrectomy ; Gastric Bypass ; Hernia ; Humans ; Ligaments ; Mesentery* ; Tomography, X-Ray Computed

PURPOSE: To evaluate the radiologic findings of alimentary anthrax. MATERIALS AND METHODS: 19 patients with alimentary anthrax, which was caused by ingestion of contaminated beef, were included in this study. The diagnosis was made .b.y demonstration of Bacillus anthracis in smear and culture of the contaminated meat. We evaluated the clinical manifestations and the findings of thoracic, abdominal radiographs, cervical, abdominal ultrasonograms and abdominal CT scans. RESULTS: Out of the 19 patients with the alimentary infection, 9 had oropharyngeal form, 18 had abdominal form and 8 had combination of oropharyngeal and abdominal form. The patients had general symptoms and signs such as fever, chill, myalgia. Clinical symptoms and signs were sore throat, throat injection, throat ulcer and patch in oropharyngeal form, and nausea, vomiting, abdominal pain, diarrhea, and gross GI bleeding in abdominal form. Radiologic findings included enlarged cervical lymph nodes(36%) in oropharyngeal form, and paralytic ileus(26%), ascites(26%), hepatomegaly(21%), enlarged mesenteric lymph nodes(26%), small bowel wall thickening(5%) in abdominal form. In two patients, late complications occurred as intestinal obstruction due to ileal stricture with perforation, and inflammatory changes of pelvic cavity due to ileovesical fistula. CONCLUSION: Radiologic findings of alimentary anthrax are difficult in differentiation from those of other inflammatory bowel disease, but those radiologic findings with clinical manifestations may be helpful in diagnosis and evaluation of disease process in patients with alimentary anthrax.
Abdominal Pain ; Anthrax* ; Bacillus anthracis ; Constriction, Pathologic ; Diagnosis ; Diarrhea ; Eating ; Fever ; Fistula ; Hemorrhage ; Humans ; Inflammatory Bowel Diseases ; Intestinal Obstruction ; Meat ; Myalgia ; Nausea ; Pharyngitis ; Pharynx ; Tomography, X-Ray Computed ; Ulcer ; Ultrasonography ; Vomiting

No abstract available.
Gastrostomy*

No abstract available.
Granuloma, Lethal Midline*

PURPOSE: Salivary duct carcinoma(SDC) is uncommon but high grade adenocarcinoma arising in the ductal epithelium of salivary glands. SDC is characterized by distinctive clinical and pathologic features. The most important histologic aspect of this neoplasm is its resemblance to ductal carcinoma of the breast. Clinically SDC is defined by cervical lymph node involvement and distant metastasis with a high rate of recurrence and mortality. We described some of the clinical and pathological features of SDC and the management using case report for our patient. METHODS: We present a case of a 40-year-old male with 2-year history of a swelling arising in his left preauricular region. There was a single painless, firm and solid 2x1.5cm mass in the left parotid area. Facial nerve function was intact and no cervical lymph node were palpable. In August 2005, we found out 1.7x1.8cm sized cystic, nodular lesions that were located in the superficial lobe of left parotid gland through Computed tomography. And then superficial parotidectomy and postoperative radiation therapy were performed in Jan 2007. RESULTS: Pathologically, the specimen were consisted of homogeneous, chondoid to myxoid type of tissues. It was yellow mass that has multiloculated cystic lesions. In postoperative PET(Positiron emission tomography) CT, there was no evidence of uptaking FDG(Fluorodeoxyglucose) into the deep layers of parotid gland and distant metastasis were not seen. CONCLUSION: Salivary duct carcinoma(SDC) is a rare but high grade adenocarcinoma related to pleomorphic adenocarcinoma. The prognosis of SDC can be different according to the type of tumor such as mucoepidermoid adenocarcinoma, adenoid duct carcinoma and acinar cell carcinoma. So we need to study more carefully for accurate diagnosis in early stage of diagnosis. Although radiotherapy has not yet proven to be a significant factor in overall survival, the combination of parotidectomy and postoperative radiation therapy can lead to more favorable results in treating of SDC.
Adenocarcinoma ; Adenoids ; Adult ; Breast ; Carcinoma, Acinar Cell ; Carcinoma, Ductal ; Epithelium ; Facial Nerve ; Humans ; Lymph Nodes ; Male ; Neoplasm Metastasis ; Parotid Gland ; Prognosis ; Recurrence ; Salivary Ducts ; Salivary Glands

The main goal of the surgical treatment of maxillofacial deformity is improved esthetic appearance and masticatory function. Recently, the purpose of orthognathic surgery has been focused on esthetic improvement of the patients. The purpose of this study was to investigate the changes in gonial angle to orthognathic surgery. For this study 30 patients were randomly selected. All patients with mandibular prognathism were operated upon with bilateral sagittal split ramus osteotomy and mandibular setback. The patients were cephalmetric lateral radiographs for 1 hear. Lateral cephalmetric radiographs taken preoperatively, over 6-months and 1 year follow up were traced and analysed. The following conclusions were reached. : 1. During following up period for 1 year, the change of gonial angle after orthognathic surgery was decreased, except 3 cases. The mean gonial angle change was decreased from 128.6 degrees(+/-4.83) to 123.4 degrees(+/-5.52) in female(p<0.05). 2. During follow up period for 1 year, the mean gonial angle was decreased after orthognathic surgery from 129.7 degrees(+/-6.47) to 123.3 degrees(+/-7.52), in all male patients(p<0.05). 3. The mean gonial angle changes after orthognathic surgery was about 5.2 degrees in female and 5.4 degrees in male. There was less statistical significance between male and female. 4. The ratio of mandibular setback amount from 6mm to 15mm was 83.3%, and from 1mm to 5mm was 10%.
Congenital Abnormalities ; Female ; Follow-Up Studies ; Humans ; Male ; Orthognathic Surgery ; Osteotomy, Sagittal Split Ramus ; Prognathism

Four children, with histopathologically confirmed posterior fossa primitive neuroectoderrnal tumors, were examined by plain radiography, computed tomography (CT) and cerebral angiography. The homogeneously well enhanced solid mass in the midline of the posterior fossa and hydrocephalus of various degree were seen on all CT scans. One case had calcifications and another case had low density areas in the tumor mass. Three cerebral angiograms showed vascular displacement without tumor vascularities. Unfortunately, these CT and angiography findings are and other tumors. when a well enhanced solid mass in the midline posterior fossa is seen on CT scan in children.
Angiography ; Cerebral Angiography ; Child ; Humans ; Hydrocephalus ; Medulloblastoma* ; Neuroectodermal Tumors, Primitive* ; Pathology* ; Radiography ; Tomography, X-Ray Computed