The mechanisms of morph determination in the amphipod Jassa: implications for the evolution of alternative male phenotypes.

The proximal basis for and the maintenance of alternative male reproductive strategies and tactics are generally not understood in most species, despite the occurrence of male polymorphism across many taxa. In the marine amphipod Jassa marmorata, males differ in morphology as well as behaviour. This dimorphism corresponds to two contrasting reproductive strategies: small sneaker males or 'minors', and large fighter males or 'majors'.

MnDPDP for MR imaging of the liver. Results of an independent image evaluation of the European phase III studies.

Purpose: To evaluate the diagnostic efficacy of mangafodipir trisodium (MnDPDP, Teslascan) as a new contrast agent for MR imaging of the liver based on an independent evaluation of the MR images from the European phase III studies.

Material And Methods: MR imaging of the liver was done at 0.5-2.

Radiological diagnosis and therapy of pulmonary arteriovenous fistulae in a patient with an atypical clinical history: a case report.

Pulmonary arteriovenous fistulae were first managed nonsurgically by Porstmann in 1977 with homemade metallic coils (1). During the intervening twenty years better catheterization techniques have been developed and our understanding of the clinical outcomings of these lesions has improved. This report discusses the natural history of pulmonary arteriovenous fistulae, including the neurological and other complications, the importance of family screening in the detection of asymptomatic family members, the diagnostic strategy and the description of improved techniques for embolotherapy with stainless steel coils.

Production in Natural and Restored Seagrasses: A Case Study of a Macrobenthic Polychaete.

Restoration of seagrass beds has been suggested as a method to correct declining vegetation cover in shallow waters. Secondary production of the polychaete Kinbergonuphis simoni was used to evaluate faunal equivalency of newly restored (2-yr-old) seagrass beds to beds that are mature (at least 17 yr old) in an embayment in Tampa Bay, Florida. Information on density of polychaetes, size structure, reproductive characteristics, and production (growth increment summation method) was collected from May 1989 to February 1991 from individuals within monthly sediment cores from both planted and natural seagrass beds.

Tension mediastinal emphysema: emergency percutaneous drainage with CT guidance.

Four patients aged 8 to 54 years, under mechanical ventilation, presented with sudden tension mediastinal emphysema and exhibited typical clinical symptoms of compromised venous return. Diagnosis of tension mediastinal emphysema was confirmed by CT. A percutaneous catheter with a diameter varying from F12 to F20 was inserted in the anterior mediastinal compartment with CT control and connected to a waterseal aspiration.

Administrative and organization impact of PACS and its effect on the quality of care.

PACS integrated to RIS and HIS will have a significant impact on the hospital operation. This paper describes the current radiological process and indicates at what points PACS may prove to be important, in order to guarantee its successful implementation with the objective to improve patient care by better management of personnel, equipment and information.

Percutaneous local arterial thrombolytic infusion. Therapeutic effects and complications.

All complications occurring in 55 local thrombolytic infusions performed for (sub)acute limb ischemia using streptokinase (SK) in 22 procedures and urokinase (UK) in 33 procedures were recorded. Success was achieved in 74.5% of the procedures.

Percutaneous vascular foreign body retrieval: experience of an 11-year period.

Over an 11-year period, percutaneous retrieval of intravascular foreign bodies was performed in 12 patients, using urological forceps and retrieval baskets. No clinically significant complication occurred, success rate was 100%. Review of 176 cases from the literature showed a success rate of 90%.

Small intestinal obstruction caused by extramedullary hemopoiesis and revealing myeloproliferative syndrome.

A 60-year-old woman was admitted with mild intestinal obstruction. Enteroclysis showed segmental narrowing with mucosal fold thickening of the proximal jejunum. Computed tomography in addition demonstrated enlarged mesenteric lymph nodes in the proximity of the diseased intestinal loop.

[Diagnosis and percutaneous treatment of pulmonary hydatid cyst. State of the problem apropos of a case].

A pulmonary hydatid cyst was diagnosed and cured by percutaneous CT guided aspiration. Pleural effusion related to incomplete aspiration of the loculated cyst was observed. No deleterious effect occurred, after a follow-up of 22 months.

Percutaneous treatment of pyogenic liver abscess: a critical analysis of results.

Nineteen patients who had pyogenic liver abscesses underwent percutaneous treatment assisted by computed tomography. Percutaneous drainage was performed with Fr 8-14 catheters in 12 patients and percutaneous aspiration in 7 patients. A solitary abscess was present in 15 patients and multiple abscesses were present in 4.

Local urokinase infusion for total occlusion of the lower abdominal aorta. Report of two cases and a review of the literature.

Two patients with acute occlusion of the lower abdominal aorta have been successfully treated with total of 7,425,000 and 8,850,000 units of urokinase infused locally over 93 and 86 hours, respectively, with restoration of flow. No complication occurred.

Percutaneous phenol block of the upper thoracic sympathetic chain with computed tomography guidance. A new technique.

Twenty-one percutaneous neurolyses of the upper thoracic sympathetic chain were performed in 12 patients with CT guidance by a single injection of 1 to 3 ml of phenol at the level of Th3. Results were assessed after a follow-up period varying from 4 to 33 months. Three patients with hyperhidrosis had immediate and complete disappearance of symptoms, but only one patient remained dry.