Waardenburg syndrome is a very rare auditory-pigment syndrome with autosomal dominant inheritance. In his first report in 1951, Waardenburg characterized this syndrome as dystopia canthorum, a high broad nasal bridge, synophrys[confluent eyebrows], heterochromia iridid, a white forelock or early graying, and sensory neural deafness. We observed a case of Type 2 Waardenburg syndrome with openangle glaucoma and, therefore report with literature review.
Deafness ; Glaucoma ; Glaucoma, Open-Angle* ; Waardenburg Syndrome* ; Wills

The advent of the global pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) necessitates a thorough study of the stability and transmissibility in the environment. We characterized the stability of SARS-CoV-2 in three water matrices: fresh, tap, and seawater. The minimum infective dose of SARS-CoV-2 in Vero cells was confirmed to be 10 3 PFU/mL. The stability of SARS-CoV-2 varied according to the water matrix: infective SARSCoV-2 was undetectable after treatment with fresh water and seawater, but remained detectable for 2 days in tap water, when starting with an initial concentration of 10 4 PFU/mL. When the starting concentration was increased to 10 5 PFU/mL, a similar trend was observed. In addition, viral RNA persisted longer than infectious virus in all water matrices. This study was conducted in stagnant water containing a significantly high titer of virus, thus, human-to-human transmission of SARS-CoV-2 through the actual aquatic environment is expected to be rare.

It is well known that the cell type and histopathological grading of gliomas correlate well with clinicalcourse and prognosis. Therefore, it is tempting to set certain criteria that could predict the histopathologiccharacteristics of the gliomas before the surgical intervention. With a total of 56 cases of gliomas which wereverified histopathologically in Seoul National University Hospital between July 1978 and May 1983, a statisticalanalysis of the computed tomographic findings was done with the particular emphasis on the correlation withhistopatholoigcal features. The results are as follows; 1. The calcification is observed in 27 cases (48.2%) intotal: in 20 cases (62.5%) among low grade group, in 6 cases (46.1%) among high grade group and in 1 case (9.1%)among glioblastoma multiformed group respectively. 2. The mass effect, especially surrounding low densitycorrelates well with the grade of malignancy. 3. The contrast enhancement is observed in 43 cases (76.8%). Thepattern of enhancement provides clues for the assessment of cell type and grade with fair degree of reliability.Among low grade group, 10 cases (31.3%) show no enhancement and 10 cases show solid enhancement. Among high gradegroup, 6 cases (46.8%) show solid enhancement and nodular or ring enhancement are not observed. Among glioblastomamlultiform group, 8 cases (72.7%) show characteristic thick irregular ring enhancement. 4. Plain CT densities arenot useful in differentiating each group in statistically significant level. 5. Neither the margin of the mass northe degree of contrast enhancement contributes for the differentiation of each group. 6. Summarizing the abovementioned findings it is concluded that CT is very helpful in differentiating the gliomas with regard tohistopathological cell type and the grade of malignancy as well.
Glioblastoma ; Glioma ; Prognosis ; Seoul

A pathological study was done to elucidate sequential changes of the lungs in various time intervals following experimental paragonimiasis in 15 dogs and 15 cats. The dogs and cats were fed with 30-50 metacercariae of Paragonimus westermani, and were sacrificed at 15, 20, 30, 45, 60, 90 and 120 days after infection respecively. Autopsies were performed immediately after death. Gross and microscopic examination of the lungs showed following findings: There were no qualitative difference in pathological findings between dogs and cats. Pathological findings were first noticed at 20 days of infection in thoracic cavity, which consisted of fibrinous plueritis along with superficial hemorrhage. Although no worm was found in the lung parenchyma at this period, juveniles were seen in pleural cavity together with turbid effusion. Paragonimus juveniles were first recognized inside the lung parenchyma by 30 days of infection. This was the period when the lungs showed multiple areas of hemorrhage and probably active penetration by smaller worms. Hemorrhagic bronchopneumonia was quite pronounced from this stage through 45 days of infection. Paragonimus worm cyst was essentially composed of fibrous scar and heavy inflammatory cellular infiltrate. The lining epithelial cells were first became noticed by 2 months of infection. And these epithelial cells were thought to be probably transformed alveolar lining cells rather than bronchiolar epithelial cells. As the infection progress, the cyst wall became more stabilized and often showed squamous metaplasia. Fibrinous pleuritis with pleural effusion was very prominent finding in early periods of infection. Bronchiolitis and focal vascular sclerosis were often seen in experimental paragonimiasis.
parasitology-helminth-trematoda ; Paragonimus westermani ; paragonimiasis ; pneumonia ; cyst ; hemorrhage ; pleuritis ; effusion ; bronchiolitis ; sclerosis

No abstract available.
MELAS Syndrome*

PURPOSE: To analyze the clinical aspects of consecutive esotropia after intermittent exotropia reoperation and study the prognosis and associated risk factors. METHODS: The present study included 34 patients with intermittent exotropia who underwent reoperation; incidence rate, risk factors, treatment methods and prognosis of the postoperative consecutive esotropia were analyzed. RESULTS: Of the 34 patients, 12 developed consecutive esotropia that persisted longer than a month after the reoperation; a higher incidence rate was observed in patients with esodeviation greater than 16 prism diopter (PD) on postoperative day 1 and in patients who received unilateral lateral muscle recession and medial muscle resection during the operation (p < 0.05). Conversely, factors such as age, deviation angle, refractive power, anisometropia, lateral incomitance and oblique muscle dysfunction prior to the reoperation did not affect the incidence of consecutive esotropia. The patients who developed consecutive esotropia received conservative treatments such as alternative occlusion therapy and fresnel prism wearing; 10 of 12 patients showed significant clinical improvements. CONCLUSIONS: Consecutive esotropia frequently occurs after intermittent exotropia reoperation if the patient had esodeviation greater than 16 PD on postoperative day 1 or received unilateral lateral muscle recession and medial muscle resection. The conservative treatments of the consecutive esotropia showed good clinical response and improved prognosis.
Anisometropia ; Esotropia* ; Exotropia* ; Humans ; Incidence ; Prognosis ; Reoperation ; Risk Factors

No abstract available.
Lung* ; Tracheoesophageal Fistula*

No abstract available.
Sarcoma, Synovial*

No abstract available.
Leiomyoma* ; Vagina*

No abstract available.
Carcinoma, Transitional Cell* ; Diagnosis* ; Urinary Bladder*