PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 2784301

Lymphatic anatomy: functional nodal basins.

M A Eberbach·R L Wahl
View original source ↗Export metadata ↓

Abstract

The understanding of human dermal lymphatic anatomy has rested for nearly 120 years on the original work of Sappey. Subsequently, others have added significantly to our knowledge with anatomic studies. Copious lymphoscintigraphical data have accumulated in recent years in the evaluation of cutaneous melanomas. These data suggest that the old anatomic picture of lymphatic anatomy is functionally inaccurate. Analysis of these cumulative data reveals an extensive network of feeding lymphatic connections to major nodal basins far more expansive than previously recognized. These nodal basins overlap to a significant extent, rendering drainage prediction based on location nearly impossible. Therapeutic implications are remarkable.

Explore related subjects

DrainageHumansLymphatic SystemMelanomaScintillation CountingSkin NeoplasmsTomography, Emission-ComputedJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

M A Eberbach, R L Wahl. 1989. Lymphatic anatomy: functional nodal basins.. https://doi.org/10.1097/00000637-198901000-00005

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

Traditional Foley drainage systems--do they drain the bladder?

PURPOSE: Foley catheters are assumed to drain the bladder to completion. Drainage characteristics of Foley catheter systems are poorly understood. To investigate unrecognized retained urine with Foley catheter drainage systems, bladder volumes of hospitalized patients were measured with bladder scan ultrasound volumetrics. Additionally, an in vitro bench top mock bladder and urinary catheter system was developed to understand the etiology of such residual volumes. A novel drainage tube design that optimizes indwelling catheter drainage was also designed. MATERIALS AND METHODS: Bedside bladder ultrasound volumetric studies were performed on patients hospitalized in ward and intensive care unit. If residual urine was identified the drainage tubing was manipulated to facilitate drainage. An ex vivo bladder-urinary catheter model was designed to measure flow rates and pressures within the drainage tubing of a traditional and a novel drainage tube system. RESULTS: A total of 75 patients in the intensive care unit underwent bladder ultrasound volumetrics. Mean residual volume was 96 ml (range 4 to 290). In 75 patients on the hospital ward mean residual volume was 136 ml (range 22 to 647). In the experimental model we found that for every 1 cm in curl height, obstruction pressure increased by 1 cm H2O within the artificial bladder. In contrast, the novel spiral-shaped drainage tube demonstrated rapid (0.5 cc per second), continuous and complete (100%) reservoir drainage in all trials. CONCLUSIONS: Traditional Foley catheter drainage systems evacuate the bladder suboptimally. Outflow obstruction is caused by air-locks that develop within curled redundant drainage tubing segments. The novel drainage tubing design eliminates gravity dependent curls and associated air-locks, optimizes flow, and minimizes residual bladder urine.

Drainage↗