No abstract available.
Chondrocytes* ; Ear* ; Intercellular Signaling Peptides and Proteins*

No abstract available.
Bronchiectasis* ; Bronchography*

The lesions of central nervous system in tuberous sclerosis often calcify, especially those present in the perivascular region, allowing the computed tomography to make early and definite diagnosis, even when patients intelligence was normal, seizures were absent, or clinical findings were not specific, We report three cases of tuberous sclerosis, which showed pathognomic subependymal paraventricular calcification in brain CT.
Brain* ; Central Nervous System ; Diagnosis ; Humans ; Intelligence ; Seizures ; Tuberous Sclerosis*

No abstract available.
Coronary Vessels* ; Electrocardiography* ; Spasm*

PURPOSE: The aim of our study was to identify the CT features helpful in the differential diagnosis of Iobar consolidation. MATERIALS AND METHODS: We evaluated the CT findings in 52 consecutive patients with Iobar consolidation which were proved to be pulmonary tuberculosis(n=24), malignant obstructive pneumonitis due to bronchogenic carcinoma(n=21), and lung abscess(n=7). We retrospectively reviewed CT scans with respect to 1) number of cavities or low attenuation area suggesting necrosis(we described these as cavity), 2) the contour of cavity, 3) enhancement of the cavity wall, 4) enhancement of pleura, 5) small nodules adjacent to the consolidation, 6) similar lesion in other location in lung, 7) air-bronchogram 8) mediastinal lymph node enlargement, and 9) extrapleural change. RESULTS: The helpful CT fingings in the patients with pulmonary tuberculosis were multiple cavities(more than three;79.2%), small nodules adjacent to the Iobar consolidation(75.0%), similar lesion in another lobe or lung(91.7%), air-bronchogram(91.7%), and mediastinal lymph node enlargement(58.3%). Although extrapleural change had low sensitivity it was highly specific for pulmonary tuberculosis(sensitivity, 43.5%;specificity, 91. 7%). Multiple cavities(61.9%) and mediastinal lymph node enlargement(52.4%) were common findings of malignant obstructive pneumonitis. In the patients with lung abscess, the common findings were small number of cavities(one or two, 85.7%) and air-bronchogram(85.7%). However, other findings of pulmonary tuberculosis were rarely seen in the patients with malignant obstructive pneumonitis or lung abscess. CONCLUSION: The CT findings of Iobar consolidation may be used as useful adjuncts in the differential diagnosis of Iobar consolidation.
Diagnosis, Differential ; Humans ; Lung Abscess* ; Lung* ; Lymph Nodes ; Pleura ; Pneumonia* ; Retrospective Studies ; Tomography, X-Ray Computed ; Tuberculosis* ; Tuberculosis, Pulmonary

To evaluate the reliability of MR imaging in tissue characterization and depiction of tumor boundaries, we performed MR-pathologic correlation using parosteally implanted VX-2 carcinoma in 17 rabbit thighs. T1-weighted, T2-weighted and Gd-DTPA enhanced T1-weighted axial images were obtained 10-30 days after tumor implantation. After the animals were killed, frozen and sectioned along the MR imaging planes, and histopathologic examinaton were done. For accurate MR-pathologic correlation, rabbits were fixed on the cardboard plate to minimize position change during the procedures. Tumor boundaries depicted on MR images were larger than those depicted on the specimen. Small tumors were surrounded by capsule-like loose connective tissue. Loose connective tissue became compact with tumor growth. This connective tissue showed high signal intensity on both T2-weighted and Gd-DTPA enhanced T1-weighted images. Muscle atrophy with fatty tissue accumulation around the tumor also contributed to the high signal intensity on MR images. Peritumoral edema and inflammatory reaction were not remarkable. Six of 8 cases with bone marrow fibrosis were detected on MR images. We concluded that peritumoral loose connective tissue and muscle atrophy exaggerated the size of experimentally induced malignant musculoskeletal tumors on MR images.
Adipose Tissue ; Animals ; Connective Tissue ; Edema ; Gadolinium DTPA ; Magnetic Resonance Imaging ; Muscular Atrophy ; Primary Myelofibrosis ; Rabbits ; Thigh

PURPOSE: To evaluate the radiologic findings of granulomatous colitis on double contrast barium enema and changes on follow-up studies. MATERIALS AND METHODS: Serial double contrast barium enemas of six patients with granulomatous colitis confirmed by endoscopic biopsy were reviewed. We analyzed the radiologic findings and their follow-up changes, including aphthous ulcers, lymphoid hyperplasia, deep ulcers, cobble stone appearance, geographic ulcers, asymmetric involvement of ulcers, skip lesions, sinus tract, fistula formation, pseudosacculation, focal stricture, and small bowel involvement. RESULTS: Pretreatment double contrast baruim enema findings were aphthous ulcers in five patients, deep ulcer in six, cobble stone appearance in five, longitudinal geographic ulcers in two, fistulas in one, pseudo-sacculations in two, focal stricture in one, and pseudopolyps in six. Also, anal ulcers were observed in two patients, asymmetric involvement of ulcers in three, skip lesions in four, and small bowel involvement in five in five patients proved to have inactive disease after treatment, aphthous ulcers and deep ulcers disappeared. Geographic ulcers of two patients and anal ulcer of one patients decreased in size or depth. Pseudosacculation in one patient disappeared. Pseudopolyps decreased in two patients, increased in one, and decreased after increase in two. One patient whose disease remained active after treatment showed maintenance or increase of ulcers or fistula. And their pseudosacculation or focal stricture unchanged and pseudopolyps decreased. CONCLUSION: The major radiologic findings of chronic granulomatous colitis on double contrst barium enema are aphthous ulcer, deep ulcer, cobble stone appearance, discontinuity of the lesion, and coexistence of ulcers and pseudopolyps. And, double contrast barium enema is good follow-up modality because its findings correlate with clinical course of the granulomatous colitis after treatment.
Barium* ; Biopsy ; Constriction, Pathologic ; Crohn Disease* ; Enema* ; Fissure in Ano ; Fistula ; Follow-Up Studies* ; Humans ; Hyperplasia ; Stomatitis, Aphthous ; Ulcer

PURPOSE: To evaluate the radiologic findings of granulomatous colitis on double contrast barium enema and changes on follow-up studies. MATERIALS AND METHODS: Serial double contrast barium enemas of six patients with granulomatous colitis confirmed by endoscopic biopsy were reviewed. We analyzed the radiologic findings and their follow-up changes, including aphthous ulcers, lymphoid hyperplasia, deep ulcers, cobble stone appearance, geographic ulcers, asymmetric involvement of ulcers, skip lesions, sinus tract, fistula formation, pseudosacculation, focal stricture, and small bowel involvement. RESULTS: Pretreatment double contrast baruim enema findings were aphthous ulcers in five patients, deep ulcer in six, cobble stone appearance in five, longitudinal geographic ulcers in two, fistulas in one, pseudo-sacculations in two, focal stricture in one, and pseudopolyps in six. Also, anal ulcers were observed in two patients, asymmetric involvement of ulcers in three, skip lesions in four, and small bowel involvement in five in five patients proved to have inactive disease after treatment, aphthous ulcers and deep ulcers disappeared. Geographic ulcers of two patients and anal ulcer of one patients decreased in size or depth. Pseudosacculation in one patient disappeared. Pseudopolyps decreased in two patients, increased in one, and decreased after increase in two. One patient whose disease remained active after treatment showed maintenance or increase of ulcers or fistula. And their pseudosacculation or focal stricture unchanged and pseudopolyps decreased. CONCLUSION: The major radiologic findings of chronic granulomatous colitis on double contrst barium enema are aphthous ulcer, deep ulcer, cobble stone appearance, discontinuity of the lesion, and coexistence of ulcers and pseudopolyps. And, double contrast barium enema is good follow-up modality because its findings correlate with clinical course of the granulomatous colitis after treatment.
Barium* ; Biopsy ; Constriction, Pathologic ; Crohn Disease* ; Enema* ; Fissure in Ano ; Fistula ; Follow-Up Studies* ; Humans ; Hyperplasia ; Stomatitis, Aphthous ; Ulcer

No abstract available.
Femur*

Percutaneous vertebroplasty, injection of bone cement into the vertebral body, is a very effective interventional technique to improve the pain intractable to the conservative treatment and to achieve the structural augmentation for the vertebral body fractures. The procedure has been widely performed to manage osteoporotic and other vertebral fractures because the technique is known as simple and low-risk. This review is about the several aspects of the percutaneous vertebroplasty for the sake of safe and effective procedure.
Osteoporosis ; Vertebroplasty*