PubMed Health⌕ Search

Biomedical subjects

M J Fernandez

Publications and source records attributed to M J Fernandez.

9 recordsLinked to original sources
PubMed2001

Pacemaker endocarditis: report of 2 cases.

Two cases of endocarditis due to placement of a pacemaker are reported. In both cases administration of intravenous antibiotic and removal of the entire pacing system was successful.

Aged↗
PubMed1989

Macrophages and epithelial cells of the thymus gland. An ultrastructural study in the natterjack, Bufo calamita.

In the present study, the ultrastructure of the stromal components, basically epithelial elements and macrophages, of the thymus of adult natterjacks, Bufo calamita has been analyzed. A network of stellate epithelial-reticular cells joined together by desmosomes, constitutes the main component of the thymic parenchyma in both cortex and medulla. In the medulla pale, electron-lucent epithelial cells, sometimes showing surface interdigitations, are striking elements. Moreover, uni- and multicellular epithelial cysts appear in the thymic medulla as well as granulated cells of possible endocrine significance. Remarkably, isolated or grouped gland cells whose morphology and cytoplasmic content resemble that of the skin glands, were occasionally found. Finally, macrophages, multinucleated giant cells and dendritic-like cells, the latter intimately associated to lymphocytes, occur in the thymus of Bufo calamita. The most remarkable morphologic characteristics of all those non-lymphoid cell types, as well as their possible functional significance are comparatively discussed with available information on the amphibian and higher vertebrate thymic cytoarchitecture.

Animals↗
PubMed1987

Giant neurilemoma: unusual scrotal mass.

General physical examination of the male at whatever age is incomplete unless the scrotum and its contents are assessed. Since the scrotum consists of skin, fibrous connective tissue, smooth muscle, vessels, nerves, and a lining of simple squamous epithelium, a variety of tumors may arise in it. Scrotal tumors, however, are infrequent. Rare tumors are solitary neurilemomas. The English literature does not describe a giant neurilemoma of the scrotum.

Genital Neoplasms, Male↗
PubMed1984

Post-arterial reconstruction edema, are lymphatic channels to blame?

Edema which follows successful arterial reconstruction of a previously ischemic lower limb is a common observation. Most patients have no long term difficulty, but this side effect requires considerable attention to leg care and frequently delays resumption of normal activity. Earlier studies suggested various causes. This study looked into lymphatic causes. 125I RIHSA clearance was monitored in 4 patients who developed edema following femoropopliteal bypass, and 5 patients who did not develop edema following other vascular procedures. In the edematous limbs following successful femoropopliteal bypass grafting, the mean T 1/2 was 18.4 hours when compared to 52.7 hrs. in other procedures (p less than .025). This indicates increased lymphatic flow of the distal superficial lymphatics. It is concluded that post reconstruction edema is not due to lymphatic disruption but is instead of multifactorial origin.

Adult↗
PubMed1983

Gastrointestinal lipomas.

We reviewed 15 years of experience with gastrointestinal (GI) lipomas at our institution. A series of eight patients was included, six of whom had lipomas in the colon and two, in the stomach. All eight patients were symptomatic. The diagnosis was not made preoperatively in seven cases, which accounted for surgical intervention in these patients. Colonoscopy was helpful in the diagnosis and treatment of the eighth patient. Advances in the diagnosis and treatment of GI lipomas include the use of computed tomographic scanning and colonoscopy.

Adult↗
PubMed1983

Lymphatic flow in humans as indicated by the clearance of 125I-labeled albumin from the subcutaneous tissue of the leg.

Since the removal of albumin from the extracellular space and its return to the vascular compartment is the essential function of the lymphatic system, the rate at which it is removed from the interstitial tissue may be regarded as a means of estimating lymphatic efficiency. An objective measure of lymphatic function can be obtained by monitoring the rate of clearance following injection of 125I-labeled albumin (RIHSA) from the subcutaneous tissue of a limb. The clearance of 125I-RIHSA from lower limb was monitored in a group of patients with normal limbs, patients with unilateral edema due to deep vein thrombosis, and patients with bilateral edema due to hypoproteinemia. The mean T1/2 in normal legs was 32.7 hr, compared to 23.7 hr in edematous limbs due to deep vein thrombosis and 19.4 in edematous limbs due to hypoproteinemia. There is a clear-cut difference in clearance rate between edematous and nonedematous limbs. This suggests that lymphatic flow is increased in edema due to venous obstruction and hypoproteinemia.

Adult↗