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Biomedical subjects

J M Streitz

Publications and source records attributed to J M Streitz.

28 records · Page 2Linked to original sources

Complications of percutaneous dart therapy in management of pneumothorax.

Treatment of patients who have pneumothorax is increasingly being undertaken with a small-diameter dart catheter. Although the catheter usually is effective, complications can arise with its use. We describe a patient in whom empyema developed during treatment of spontaneous pneumothorax with the use of such a catheter. Limitations and guidelines for its use are discussed.

Adult↗

Iatrogenic paraesophageal hiatus hernia.

Between January 1970 and January 1990, 101 patients with paraesophageal hiatus hernias were operated on at the Lahey Clinic Medical Center. Thirteen patients had hernias that were identified as being iatrogenic in origin, a prevalence of 13%. Ten hernias were secondary to antireflux procedures, and esophagomyotomy, esophagogastrectomy, and placement of an Angelchik prosthesis accounted for one case each. Symptoms did not differ substantially from those of patients with primary hernias. Incarceration occurred in 2 patients, but neither sustained strangulation. The pathogenesis was most frequently disruption of a previous hiatal closure. Other etiological factors included disruption of the phreno-esophageal membrane by operative dissection, postoperative gastric dilatation, and failure to recognize esophageal shortening or an existing hiatal defect. Abdominal repair was usually possible, but 3 patients required thoracotomy for reduction. There has been one known recurrence during a median follow-up of 41 months.

Adult↗

Fatal hypoxemia following mitral valve replacement.

Patency of the foramen ovale is a common condition. In certain clinical settings it permits the development of right-to-left intracardiac shunting. A case is described of sudden, fatal hypoxemia due to shunting through a patent foramen ovale immediately following mitral valve replacement.

Aged↗

Polyuric urinary tract dilatation with renal damage.

Polyuria of diabetes insipidus and psychogenic polydipsia can produce massive dilatation of the urinary tract in the absence of any mechanical obstruction. Renal failure in these cases is rare. We report the second case of nephrogenic diabetes insipidus with nonobstructive hydronephrotic renal damage. Temporary suprapubic drainage restored renal function to normal and decreased the upper tract dilatation. Renal function has been preserved for more than 10 years. Surgical intervention beyond temporary vesical drainage is unnecessary.

Child↗

A 1,500-year-old bladder stone.

A calcium oxalate calculus was found in the anatomically normal bladder of a 1,500-year-old native American male mummy from the Northeastern Arizona Basketmaker cultural group. Results of analysis by chemical, optical, spectrographic and x-ray diffraction methods are listed and compared to several other reported prehistoric uroliths.

Adult↗

Serum alpha-fetoprotein and human chorionic gonadotropin in patients with seminoma.

We analyzed the case histories of 31 patients who initially had a diagnosis of seminoma and elevated serum levels of alpha-fetoprotein or human chorionic gonadotropin. We concluded that an elevated alpha-fetoprotein level is firm evidence of the presence of non-seminomatous germ cell tumor and that the patient should be treated accordingly. However, if the level of human chorionic gonadotropin alone is elevated the diagnosis may be either non-seminomatous tumor or seminoma. Patients with seminoma and an elevated level of human chorionic gonadotropin do respond well to radiation therapy if they have low stage disease but if metastatic seminoma is present an elevated human chorionic gonadotropin level appears to be a poor prognostic sign if conventional treatment is given. A plan of treatment is proposed for these patients.

Adult↗