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Biomedical subjects

M S Shin

Publications and source records attributed to M S Shin.

At least 19 recordsLinked to original sources
PubMed1992

Pulmonary barotrauma in mechanical ventilation. Patterns and risk factors.

The incidence of mediastinal emphysema (ME) and pneumothorax (PTX) was analyzed to determine the roentgenographic patterns and risk factors for the development of barotrauma in a population of mechanically ventilated patients. The roentgenograms of 139 intubated patients admitted to our medical intensive care unit over a ten-month period were evaluated for the presence of ME and PTX. Barotrauma was diagnosed in 34 of these patients, and ME was the initial manifestation in 24 patients. Of these patients with initial ME, ten subsequently developed PTX, a positive predictive value of 42 percent. The adult respiratory distress syndrome (ARDS) patient population was at highest risk for barotrauma, with an intermediate risk seen in those admitted with COPD or pneumonia. Values of peak inspiratory pressure, positive end-expiratory pressure level, respiratory rate, tidal volume, and minute ventilation were significantly elevated in patients who developed barotrauma as compared with patients who did not develop barotrauma. However, these elevations in part reflect the high incidence of barotrauma in the ARDS population, a patient group in which all of the above parameters were elevated.

Barotrauma↗
PubMed1992

Diverse roentgenographic manifestations of the rare pulmonary involvement in myeloma.

Roentgenographic manifestations of two cases of pulmonary involvement with myeloma were presented. One showed a nodular mass lesion extending from an extramedullary mediastinal plasmacytoma into the lung parenchyma while the other showed diffuse reticulonodular infiltrate by myeloma cells in association with alveolar septal amyloidosis. These two cases demonstrate the extreme variability of pulmonary involvement by myeloma, which can mimic a solitary tumor or an inflammatory infiltrate.

Aged↗
PubMed1992

Radiographic evidence of calcification in pulmonary hamartomas.

Eight cases of solitary intrapulmonary hamartomas are presented to show the unusually high frequency of calcification (75%, six of eight cases) in this series. Possible contributory factors were high percentage of chondromatous variant (seven of eight cases), large size of the tumors, and use of computed tomography.

Aged↗
PubMed1991

Apical Pneumocystis carinii pneumonia in AIDS patients not receiving inhaled pentamidine prophylaxis.

Isolated apical Pneumocystis carinii pneumonia might develop in AIDS patients receiving aerosolized pentamidine prophylaxis. Demonstrated here are two cases of apical P carinii pneumonia occurring in patients not receiving inhaled pentamidine prophylaxis. Such isolated apical localization of P carinii should be differentiated from tuberculosis and fungal infection.

Acquired Immunodeficiency Syndrome↗
PubMed1991

Unusual initial calcification of primary and metastatic seminomas. Detection by computed tomography.

Rare large ab initio calcifications of a primary mediastinal seminoma in a 16-year-old boy and of para-aortic nodal metastatic ovarian seminoma in a 14-year-old girl are demonstrated with CT but not with conventional radiography. They are most likely dystrophic calcifications because of the absence of other germ cell tumor components and infective granulomatous disease. Routine use of CT might detect more such calcifications in untreated seminoma.

Adolescent↗
PubMed1990

Intrapulmonary bronchogenic cyst: spontaneous dissolution?

A well-demarcated, non-calcific, solitary pulmonary nodule was initially discovered 3 v2 years ago on a chest radiograph in a 43-year-old woman with recurrent acute bronchitis. The nodNle had been stationary with minimal change in size until the last radiographic examination which showed total disappearance of the nodule. A thin-walled, air-filled cyst was, however, demonstrated by computed tomography at the same location. The nodule was believed to be an intrapulmonary bronchogenic cyst which developed communication with airway with discharge of its watery content, leading to its pseudo resolution.

Adult↗
PubMed1979

Nonobstructive coarctation.

Roentgenographic studies, including plain chest roentgenography, thoracic aortography, and coronary angiography, were performed in seven adult patients with nonobstructive coarctation, a congenital deformity of the upper thoracic aorta. The chest roentgenographic findings were compared with those of ten patients with obstructive coarctation studied during the same period. A great similarity was found in the morphology and associated lesions of these two conditions, which supports the idea that nonobstructive and obstructive coarctation are stages of the same disease. Patients with nonobstructive coarctation had a more prominent aortic arch, and the indentation in the thoracic aorta was higher than in patients with obstructive coarctation. In addition, patients with nonobstructive coarctation had no rib notching on plain chest roentgenograms. Angiographic evaluation in patients with nonobstructive disease demonstrated the anatomic lesion, the absence of collateral circulation, and the commonly associated anomalies of the aortic valve.

Adult↗
PubMed1979

Osteosclerosis (punctate form) in multiple myeloma.

Generalized punctate and nodular osteosclerosis associated with multiple myeloma is reported with review of the literature and differential diagnoses. This patient differs from some others reported earlier in the absence of any recognized osteolytic lesions either during life or at autopsy.

Diagnosis, Differential↗
PubMed1979

Primary hemangiopericytoma of lung: radiography and pathology.

Two cases of primary hemangiopericytoma of the lung are reported. The massive tumors had radiographic features of round or oval contour, homogeneous opacity, well circumscribed smooth outline without calcification, and no compression of the surrounding lung tissue. They were rather homogeneous histologically, well encapsulated, and centrally located, but extended peripherally by replacement, instead of compression, of the pulmonary parenchyma. Review of the literature about 34 other cases suggests these are the usual characteristics of primary hemangiopericytomas of the lungs.

Cough↗
PubMed1978

Pitfalls in ultrasonic detection of pleural fluid.

This is a report of proven massive infiltration of Hodgkin's disease of the lung with correlative sonographic, roentgenographic, and pathologic findings. Special emphasis is placed on the difficulties in distinguishing pleural fluid from massive tumor infiltration of the lung by Hodgkin's disease.

Adult↗
PubMed1978

Computed tomographic diagnosis of pseudoascites (floating viscera syndrome).

Two cases of excessive fat deposition in the abdomen, confused clinically as massive ascites, are reported. Computed tomography (CT) has proven useful in making a definitive diagnosis of fat deposition in the abdominal and retroperitoneal space and has made further clinical studies unnecessary. No prior cases of pseudoascites (floating viscera syndrome) have been reported in the radiologic literature despite the specificity of CT diagnosis.

Abdomen↗
PubMed1978

Pulmonary consolidation associated with infusion of a glucose-insulin-potassium solution in acute myocardial infarction.

From 1972 to 1975, we have observed seven patients with localized pulmonary consolidation distal to the tip of a Swan-Ganz catheter. These seven instances occurred in a population of over 300 patients receiving a hypertonic solution of glucose, insulin, and potassium for acute myocardial infarction. In four patients the glucose-insulin-potassium solution was instilled directly into the right pulmonary artery from the tip of the Swan-Ganz catheter. In the subsequent three patients the solution was administered via the right atrial port and thus perfused the entire pulmonary vascular bed. The roentgenographic appearance of this localized pulmonary consolidation is indistinguishable from infarction caused by pulmonary thromboembolus or wedging of the catheter.

Adult↗