Myopic regression after photorefractive keratectomy.

Background And Objective: Myopic photorefractive keratectomy (PRK) using the 193 nm excimer laser is an effective and precise surgical procedure to correct myopia, but not without complications, such as corneal haze, over- or undercorrection, halo, glare, and myopic regression. Among these, myopic regression, which can reduce uncorrected visual acuity, is the most common and progressive long-term complication.

Patients And Methods: We evaluated 228 eyes that received successful myopic PRK with the Summit excimer laser (ExciMed UV 200LA, 5.

Unusual proximal migration of ventriculoperitoneal shunt into the heart.

Quite a number of cases of upward shunt migration have already been reported in the literature. In this paper, the intracardiac migration of a peritoneal shunt tube of a ventriculoperitoneal shunt system is reported. This is a rare complication of ventriculoperitoneal shunting and was diagnosed by a plain radiograph of the chest and a direct open heart surgery.

Early graft dysfunction due to renal vein compression.

We here report on an unusual case of early renal transplant dysfunction due to renal vein compression. Graft function was initially good but oliguria and massive hematuria developed on the 3rd day after transplantation. Duplex sonography showed turbulent blood flow of the renal vein, and renal venography confirmed renal vein compression.

Tuberculosis-associated hemophagocytic syndrome in a hemodialysis patient: case report and review of the literature.

We present an unusual hematologic manifestation of tuberculosis in a hemodialysis patient. A 37-year-old man was admitted because of fever, anorexia, and weight loss which developed 3 months earlier. He previously received a renal transplant and commenced hemodialysis 1 year ago.

Chronic granulomatous interstitial nephritis: unusual complication of acute pyelonephritis.

We describe an unusual complication of acute pyelonephritis in a 45-year-old diabetic female. She was admitted to our hospital due to fever and flank pain which had developed 10 days earlier. Urinalysis showed many WBC and urine culture revealed Escherichia coli.

Neuronal dysfunction in patients with closed head injury evaluated by in vivo 1H magnetic resonance spectroscopy.

Rationale And Objectives: With the use of localized, water-suppressed in vivo 1H magnetic resonance spectroscopy (MRS), the proton metabolic alterations of white matter in patients with closed head injury (CHI) and healthy controls are evaluated, and metabolic alterations with Glasgow Outcome Scale (GOS) scores are compared.

Methods: Patients with CHI (n = 10) and healthy control subjects (n = 10) underwent MRS examinations using a stimulated-echo acquisition mode pulse sequence that provided 2 x 2 x 2 cm3 volume of interest in the left frontoparietal white matter. Proton metabolite ratios relative to creatine were obtained using a Marquart algorithm.

Bone pathologic correlation of multimodality imaging in Paget's disease.

The pagetic bones in the active phase of the disease with brisk lysis and sclerosis manifest intense tracer uptake on planar bone and SPECT images. Intense tracer uptake, however, can occur also in infections, dysplasias and metastases. Pinhole bone scintigraphy has been shown to portray specific diagnostic signs in a number of skeletal diseases.

Neuroimaging and functional examination in hydrocephalus: a comment.

All the papers were of a high scientific standard, giving us clearly defined information that will be applicable in the diagnosis and further management of infantile hydrocephalus. Particularly interesting subjects were the comparison of CT and MRI in the evaluation of hydrocephalus and cine MRI, which allows evaluation of the CSF dynamic flows. CBF measurements with xenon CT/CBF imaging or transcranial Doppler examinations of CBF velocity are used much more for evaluation of the shunt indications for shunting and also for definition of the outcome of shunting procedures.

Multimodal treatment for the locally advanced stage IB, IIA, IIB patients of cervical cancer.

By employing neoadjuvent chemotherapy (NCT) before radical hysterectomy (RS) and pelvic radiotherapy (RT) in bulky locally advanced cervical cancer (IB, IIA, IIB), the study was focused to update the results of the author's therapeutic experience with multimodal treatment by observing tumor free survivals along with related prognostic factors in different treatment modalities with NCT. The chemotherapy regimen for induction is composed of Vinblastin, Bleomycin and cis-Platin regimen (VBP). The effect of neoadjuvent chemotherapy was evaluated by the WHO definition of clinical response (CR, PR, ST, PG).

Krukenberg's tumor of the ovary: MR imaging features.

Objective: Krukenberg's tumors are metastatic tumors of the ovary. Some of these tumors had hypointense solid components on T2-weighted MR images. The purpose of this study was to evaluate the MR features of Krukenberg's tumors and to compare them with those of other solid ovarian tumors to determine whether hypointense solid components on MR images were characteristic of Krukenberg's tumors.

Aberrations of the p53 tumor suppressor gene in human epithelial ovarian carcinoma.

Aberrations of the p53 gene in 26 surgical specimens of human epithelial ovarian carcinomas were examined by single-strand conformation polymorphism (SSCP) analysis of polymerase chain reaction (PCR) products. Seven (27%) of the tumors demonstrated a SSCP band shift in exons 4 to 9 of the gene, including 5 in the region encompassing exons 5 and 6, 1 in exon 7, and 1 in the region encompassing exons 8 and 9. Mutations were clustered in exon 5 in highly conserved regions of the p53 gene.

Postmortem metabolic and morphologic alterations of the dog brain thalamus with use of in vivo 1H magnetic resonance spectroscopy and electron microscopy.

Rationale And Objectives: To investigate postmortem metabolic and morphologic alterations in the dog brain thalamus and to contribute diagnostic aids in medicolegal science.

Methods: A homogeneous group of 17 dogs was used for in vivo 1H magnetic resonance (MR) spectroscopy and electron microscopic studies, which were performed under intravenous and intramuscular anesthesia before and after the dogs were killed. All 1H MR spectroscopy and electron microscopy examinations were performed on a 1.

Photorefractive keratectomy for undercorrected myopia after radial keratotomy: two-year follow up.

We evaluated the clinical results of excimer laser photorefractive keratectomy (PRK) on 18 myopic eyes of 13 patients with residual myopia after radial keratotomy. Follow up was 24 months or more and the time interval between radial keratotomy and PRK ranged from 12 to 94 months. Patients were divided into two groups for analysis based on their preoperative myopia: group 1 (-6.

Three-year results of photorefractive keratectomy for myopia.

We evaluated the results of single-step photorefractive keratectomy (PRK) on 35 consecutive myopic eyes (19 patients) with follow up of 3 years or more. The range of preoperative myopia was from -2.00 diopters (D) to -6.

Establishment and characterization of a cell line (CUMC-3) derived from a human squamous carcinoma of the uterine cervix.

A new cell line, CUMC-3, has been derived from an invasive nonkeratinizing squamous cell carcinoma of the uterine cervix in a 32-year-old patient. It has been maintained in long-term culture for 59 months, and passaged over 310 times. Monolayer-cultured cells were polygonal in shape, showing a pavement-like arrangement and a tendency to pile up without contact inhibition.

Detection of c-K-ras point mutation in ovarian cancer.

Point mutations of c-K-ras in ovarian cancer were detected by replacement of GGT of codon 12 by GAT, AGT, TGT and GTT, polymerase chain reaction, agarose gel electrophoresis and Southern blot hybridization with a digoxigenin detection system. The incidence of four-typed point mutations of c-K-ras oncogene in 37 ovarian cancers was 35.1% (13/37) and the distributions were 32.

Comparison of peritoneal catheter survival with fistula survival in hemodialysis.

Objective: To compare continuous ambulatory peritoneal dialysis (CAPD) and hemodialysis (HD) with regard to long-term maintenance of access.

Design: Retrospective study of a four- to six-year time period at one center.

Patients: One hundred and twenty-two CAPD patients between December 1988 and December 1992, and 172 HD patients between May 1986 and December 1992.

1H magnetic resonance spectroscopy characterization of neuronal dysfunction in drug-naive, chronic schizophrenia.

Rationale And Objectives: We investigated the proton metabolism of right prefrontal white matter in drug-naive, chronic schizophrenic patients (n = 23), compared with healthy normal control subjects (n = 10), by using localized, water-suppressed in vivo 1H magnetic resonance (MR) spectroscopy.

Methods: All 1H MR spectroscopy examinations were performed on a 1.5-T MR imaging/MR spectroscopy system by using a point-resolved spectroscopy pulse sequence for localized volumes of 2 x 2 x 2 cm3.

Effects of laser photocoagulation on corneal neovascularization in rabbits.

Background: Corneal neovascularization is a common clinical entity. Although visual acuity is usually impaired and corneal function compromised, there has been only limited success in the clinical management of this condition. We evaluated the efficacy of laser photocoagulation of neovascularization in the rabbit cornea.

Pinhole skeletal scintigraphic manifestations of Tietze's disease.

Tietze's disease (TD) is a self-limited, non-specific, inflammatory condition of the upper costochondral junction (CCJ). Unlike in many other skeletal diseases, radiography plays a relatively minor role in TD because radiographic changes are frequently obscured by physiological costochondral calcifications. Bone scanning is a sensitive test for TD, but its specificity is low.

Pinhole scintigraphic sign of chondromalacia patellae in older subjects: a prospective assessment with differential diagnosis.

Unlabelled: Chondromalacia patellae (CP) is an important cause of anterior knee pain. Two clinical types are known: one that typically affects young subjects and the one that affects older patients. The primary diagnostic approach is radiography reinforced with arthrography.

Excimer laser photorefractive keratectomy for myopia: two-year follow-up.

We evaluated the results of photorefractive keratectomy (PRK) with an excimer laser on 45 consecutive myopic eyes (23 patients) that were followed two years or more. The myopic range was from -2.00 diopters (D) to -6.

Some problems after photorefractive keratectomy.

We analyzed the data from 1821 patients (2920 eyes) who received photorefractive keratectomy (PRK) to investigate the postoperative complications which cause a significant decrease in visual acuity. A corneal haze of grade 2 or more developed in 9 patients (11 eyes, 0.38%) and corticosteroid-induced ocular hypertension occurred in 3 patients (4 eyes, 0.

Two-step annular tectonic lamellar keratoplasty in severe Terrien's marginal degeneration.

We present a case of severe Terrien's marginal degeneration treated with two-step annular lamellar keratoplasty. Both eyes of the patient had peripheral corneal thinning with ectasia around the entire corneal circumference. First, an annular-shaped ectatic lesion was defined and removed, and donor tissue of the same size and shape was sutured on the recipient bed with 10-0 nylon.

Local recurrence after surgery for gastric carcinoma: CT findings.

Local recurrence of gastric carcinoma after surgery is defined as histologic evidence of a tumor in the surrounding tissues of the resected stomach. Compared with the large number of articles describing tumor recurrence after colectomy for colonic carcinoma, few reports have been published on the CT findings after gastrectomy. We illustrate the CT features of local tumor recurrence after gastrectomy in 36 patients in whom recurrence was confirmed pathologically or by definitive findings on CT scans.