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Biomedical subjects

R B McElvein

Publications and source records attributed to R B McElvein.

At least 19 recordsLinked to original sources

Esophageal hiatus hernia after fundoplication.

The cases of three patients who underwent fundoplication to correct gastroesophageal reflux and who subsequently had herniation above the diaphragm of abdominal contents through the esophageal hiatus are described. In two patients, the fundoplication was performed through a transabdominal approach, and in one patient through a transthoracic approach. The main symptoms were vague but persistent (48 hours) abdominal pain in three, associated with nausea and vomiting in one. The diagnosis was confirmed with an upper GI series in all three; the proximal stomach was displaced in all, the transverse colon in one. Elective reoperation to reduce the displaced abdominal contents and to narrow the esophageal hiatus was done in the three cases. All recovered uneventfully and were relieved of their preoperative symptoms. Eight years later, one patient developed a gastric carcinoma requiring esophagogastrectomy; another patient remained asymptomatic 1 year after operation; the third was lost to follow-up 1 month after his operation. The presence of herniation of abdominal contents through the esophageal hiatus is a rare complication that should be suspected in patients who previously underwent fundoplication, either through the abdominal or thoracic approaches, and who complain of mild but persistent abdominal pain. Narrowing of the esophageal hiatus by approximating with sutures the diaphragmatic crura at the time when the fundoplication is done would appear to be an important technical point to avoid this complication. When it occurs, elective repair is advisable.

Adult↗

Intrapulmonary teratoma: a case report and review of the literature.

Intrapulmonary teratomas are rare; only 30 cases have been reported in the world literature. These tumors are thought to originate from the third pharyngeal pouch. They occur equally in men and women and usually are diagnosed in the second to fourth decade of life. They are more often benign than malignant, although malignant lesions may have a favorable postoperative prognosis and benign lesions may exhibit high morbidity and mortality because of their size and location. These tumors present radiographically as lobulated masses that may contain calcification or peripheral collections of air. They most often occur in the upper lobes. The computed tomographic findings of intrapulmonary teratoma are less well known but have been described in two cases. An additional case is presented with a review of the literature and a tabular summary of the characteristics of this unusual entity.

Adult↗

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↗

Procedures in the evaluation of chest disease.

The evaluation of chest disease may require one or more procedures. Bronchoscopy, both rigid and flexible, mediastinoscopy, mediastinotomy, chest tube drainage, lung biopsy, thoracoscopy, and pleural biopsy are described, with indications, contraindications, and results detailed.

Bronchoscopy↗

Computed tomography evaluation of pathologic processes in the potential spaces of the mediastinum.

The potential spaces of the mediastinum can be involved in a variety of disease processes and become evident by computed tomography study. The potential spaces may be distended with air, blood, inflammatory exudate, excessive fat, or tumor which separates and displaces the normal mediastinal structures. Seven cases with various pathologic processes are selected to demonstrate the computed tomography characteristics of such lesions. We emphasize the importance of computed tomography in evaluating and understanding various disease processes involving the potential spaces in an often widened mediastinum.

Adult↗

Solitary neurofibroma of the vagus nerve in the aortopulmonary window masquerading as a developmental cyst.

A rare case of solitary neurofibroma of the vagus nerve in the aortopulmonary window masquerading as a developmental cyst is reported. Its computed tomographic characteristics and magnetic resonance imaging are described and correlated with pathologic findings. Although the features of such imaging modalities are quite characteristic for a neurofibroma, its differentiation from "atypical" developmental cysts may be difficult.

Adult↗

Transthoracic exposure for anterior spinal surgery.

The anterior approach to the vertebral column is used to treat fractures, spinal deformities, and destructive lesions secondary to tumor or infection. The thoracic surgeon, working with orthopedic surgeons and neurosurgeons, is uniquely qualified to provide surgical exposure expediently and assist in postoperative care. Forty-five patients with spinal deformities secondary to trauma (18 patients), congenital anomalies (16 patients), neoplastic disease (7 patients), and inflammation (4 patients) were treated by a transthoracic (37 patients) or thoracoabdominal (10 patients) anterior approach to the vertebral column. Two patients had subsequent operations. Free and vascularized rib grafts were used for stabilization and fusion with good results and few complications (8 patients). These results indicate that interspecialty cooperation results in expedient surgical exposure and good postoperative care.

Adolescent↗

Percutaneous fine needle aspiration in the diagnosis and management of mediastinal cysts in adults.

Management of asymptomatic mediastinal cysts in adults is controversial. In the past, these cysts were excised primarily to establish a diagnosis. Presently, computerized tomography (CT) of the chest can diagnose the majority of mediastinal cysts, based on their smooth contour and low density; however, CT diagnosis of a mediastinal cyst based on density can be erroneous. In six patients, we established the diagnosis of mediastinal cyst by percutaneous needle biopsy (PNB) without complication. In four of the patients, PNB was done as an outpatient procedure. Follow-up in five patients ranged from three months to three years, with no increase in the size of the cyst; in the sixth patient, surgical excision showed a hygroma. Thus, diagnosis of a mediastinal cyst can be safely confirmed by PNB. We suggest that these asymptomatic patients can be followed up without the need for surgical excision.

Adult↗

Concatenations.

Concatenations, linkings of events and ideas, are demonstrated to show the progress of thoracic surgery. The development of our knowledge of pulmonary anatomy, pleural drainage, and thoracic anesthesia, independently and collectively, has proven invaluable in the current successful surgical treatment of many pulmonary diseases.

Anesthesia↗

Nonbronchial systemic collateral arteries: significance in percutaneous embolotherapy for hemoptysis.

Twenty patients with massive or recurrent hemoptysis underwent percutaneous transcatheter embolotherapy between 1979 and 1986 for the following diseases: cavitary aspergillosis (n = 4); cystic fibrosis (n = 4); tuberculosis (n = 3); bronchogenic carcinoma (n = 3); bronchiectasis (n = 3); small cell lung carcinoma 6 years after irradiation (n = 1); congenital heart disease, after Glenn and Blalock anastomoses (n = 1); and unknown interstitial disease (n = 1). Bronchial arteries were embolized in all but one patient. In nine patients (45%) nonbronchial systemic collateral arteries contributed significantly to areas of pathologic pulmonary tissue and frequently were the major arterial supply. These nonbronchial systemic collaterals included branches of the subclavian and axillary arteries (n = 7), intercostal arteries (n = 5), and phrenic arteries (n = 3) and accounted for 59.5% of the total number of arteries embolized. Recognition and occlusion of nonbronchial systemic collaterals providing blood to hypervascular pulmonary lesions is essential for successful percutaneous embolotherapy of hemoptysis.

Adolescent↗