No abstract available.
Alloys* ; Joints*

The role of scintigraphic imaging has moved from the detection of lesions to the tissue-specific characterization of lesions over the past 2 decades. Major advances in nuclear medicine imaging include: 1) positron imaging, 2) improved instrumentation, such as the use of multidetector (dual or triple head) gamma cameras for single photon emission computed tomography, and 3) development of numerous new radiopharmaceuticals for positron or single photon imaging ( labeled glucose analogue, amino acids, fatty acids, hormones, drugs, receptor ligands, monoclonal antibodies, etc). These advanced have resulted in a significantly improved efficacy of radionuclide techniques for the evaluation of various of focal gepatic tumors is reviewed in this article with an emphasis on the clinical applications of various tracer studies and imaging findings.
Amino Acids ; Antibodies, Monoclonal ; Carcinoma, Hepatocellular ; Electrons ; Fatty Acids ; Gamma Cameras ; Glucose ; Hemangioma ; Ligands ; Nuclear Medicine* ; Radionuclide Imaging ; Radiopharmaceuticals ; Tomography, Emission-Computed, Single-Photon

PURPOSE: To draw attention to the radiological findings of a benign variant of cerebral astrocytoma in a young patient. MATERIALS AND METHODS: A 24-year-old man with generalized tonic-clonic seizure of 7 years' duration and normal neurological examination was examined with plain skull series, brain CT and MRI, and cerebral angiography. MR imaging was performed with a 0.5 Tesla Toshiba MRT-50A scanner (TIWI, PDWI, T2WI, 0.1 mmol/kg of Gd- DTPA, SE). RESULTS: 1 ) Plain skull series: A radiolucent lesion with a partial radiopaque rim of about 2.5 x 3 cm size in the right anterior parietal bone.2) B rain CT scan: A cystic mass in the right frontoparietal cortex of midconvexity with pressure erosion on the adjacent skull and partial enhancement at outer and anterior portion.3) Brain MRI:A hypointense mass containing a small, intensely enhancing isointensity anterolaterally on Tl-weighted images, which was hyperintense with better delineation of bulging cortical-based appearance on T2-weithted images. No peritumoral edema.4) Cerebral anglography: An avascular mass. CONCLUSION: The diagnosis of pleomorphic xanthoastrocytoma(PXA) should be entertained in patients in whom a superticially placed enhancing intracerebral tumor containing cystic portion that seems to be in contact with the meninges develops during juvenile years.
Astrocytoma ; Brain ; Cerebral Angiography ; Diagnosis ; Humans ; Magnetic Resonance Imaging ; Meninges ; Neurologic Examination ; Pentetic Acid ; Rabeprazole ; Rain ; Seizures ; Skull ; Tomography, X-Ray Computed ; Young Adult

No abstract available.
Diagnosis* ; Knee* ; Magnetic Resonance Imaging*

No abstract available.
Facial Bones*

No abstract available.
alpha-Fetoproteins* ; Amniotic Fluid* ; Female ; Humans ; Pregnancy ; Pregnancy Trimester, Second* ; Pregnancy*

The pathogenicity of Demodex folliculorum (DF) is not well established, becausc this cutaneous parasite can be found very often not only from acneic skin lesions but also on healthy human skin, surface, particularly on sebaceous gland-rich and functionaIly active areas of the skin, i.e. on face, and therefore, the mite has been generally considered as normal inhabitant of human skin. However, as is the case with candidiasis, the parasite could also be pathogenic in the state of disturbed host-para-site relationship. To find out the pathogenicity of the mite, the authors studied the incidence of finding DF from different sites of face in several groups of 60 acneic patients (various types of acne vulgaris and rosacea) and 30 normal subjects as control. And the results obtained were as follows: the mite was found in 33 cases out of the acnei patients (55%), in male patients 67% (12 out of l8) were positive and in fernales 50% (21 out of 42). In the control group of 3O (15 each sex), 17 cases (9 males and 8 females) had thc mite, the incidence rate being 57%, The incidence rate of DF in various types of acneic skin lesions were: 85% in rosacea. 80% in pustular acne 71% in cvstic acne and 32% in papular acne. The distribution of the mite in various sites of the face differed markedly in the acneic and normal groups. In the control group 17 (57 %) were positive on nose, 3 (10%) on cheek, 2 (7%) on chin, and none on the forehead. Among 60 acneic patients, however, 18 (30%) were positive on cheek, 17 (28%) on nose, 15 (25%) on chin 12 (20 %) on forehead. In addition, the acuthors observed two cases of demodicidosis in the dogs. These two dogs were siblings and lived together with other dogs of the same lineage, but the other dogs were not affected. In spite of vigorous treatment with 15 % benzyl benzoate aqueous emulsion and 10 % crotamiton ointment applied topically for two to three weeks, the dogs died within one to two months. Slight improvement only was noted in the first week of the treatment, but the dogs were gradually emaciated, leading to death. At the onset of the disease, both dogs were two to three months old. Histopathological studies of the affected skin revealed dense patchy lymphocytic infiltration predominantly in perifollicular area, follicular keratotic plugging and egg-like materials in the Iumen of hair follicle. Histopathology of the affected canine skin appeared similar to that of human demodicidosis except that the mitelike material was observed lodged in the lumen of hair follicle. The morphology of demodex folliculorum canis seemed slightly different from that of the human strain (DF hominis). It is generally smaller in size and has narrower and shorter stunted abdomen than human strain, otherwise it is almost alike. The human demo3icrdosis can be effectively treated with 15% benzyl benzoate aqueous emulsion, 1% gamma benzene hexachlrode cream and 10 % crotamiton ointment, and it seems to be most effective agent being crotamiton ointment among them. It is suggested that demodex folliculorum, which has been hitherto thought to be harmless, can be pathogenic in certain individuals and that some immunologic factors might be implicated in the process of the demodicidosis.
Abdomen ; Acne Vulgaris ; Animals ; Benzene ; Benzoates ; Candidiasis ; Cheek ; Chin ; Dogs ; Dronabinol ; Forehead ; Hair Follicle ; Humans ; Immunologic Factors ; Incidence ; Male ; Mites ; Nose ; Parasites ; Rosacea ; Siblings ; Skin ; Virulence*

Mycetoma is a clinical syndrome of localized, indolent, deforming, swollen lesions and sinuses, involving cutaneous and subcutaneous tissues, fascia, and bone. Its lesions. are composed of suppurat.ing abscesses, granulomata, and dra ning sinuses and the etiologic agents are wide variety of bacteria (actinomycotic mycetoma) and fungi(eumcotic mycetoma) from plant and soil. The patient was a 65-year-old female and a farnier. She was referred by the skin lesion loalized on the dorsum of her lefther left hand and wrist for three months. It showed multiple subcutaneclis nodules, abscesses, and discharging fitula based on the erythematous plaque. The skin biopsy frorn the lesion revealed the PAS positive hyphae in the granulocytic infiltration. Fungus cult,ure with a piece of tissue on sabouraud media shows hin, floccose, white colonies. Slide culture and biochemical idcrtification of pathogen led to the final diagnosis as Mycetoma caused by Pseudallescheria boydii(Monosporium apiospermum). The lesions disappeared gradualy following systemic oral administratior of Itraconazole 200mg daily for six weeks.
Abscess ; Aged ; Bacteria ; Biopsy ; Diagnosis ; Fascia ; Female ; Fungi ; Hand ; Humans ; Hyphae ; Itraconazole ; Mycetoma* ; Plants ; Pseudallescheria* ; Skin ; Soil ; Subcutaneous Tissue ; Wrist

No abstract available.
Echocardiography, Doppler* ; Heart Defects, Congenital*

Castleman disease is a benign disorder, usually occurring within mediastinum, characterized by proliferation of lymphold tissue. The authors report a rare case of Castleman disease originating from mesenteric root. The tumor was highly vascular, proved by dynamic CT examination and splanchnic angiography.
Angiography ; Giant Lymph Node Hyperplasia* ; Mediastinum