Document Detail

Change of angiostructure and hemodynamics in lymph node metastases in rabbits.
MedLine Citation:
PMID:  11925547     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: Experimental models of lymph node metastasis were developed for Doppler sonography. METHODS: Cervical lymph node (LN) metastasis was induced by the implantation of a VX-2 tumor on the oral floor of 10 rabbits. Twenty metastatic LNs were observed weekly by power Doppler sonography, and the presence of an avascular area and the peripheral vessels were evaluated. The time-averaged maximum velocity (TAMx) at the hilum was also measured. RESULTS: The percentage of the metastatic LNs presenting with an avascular area increased over time. The peripheral vessels were detected in 14 of 20 LNs. The peak time of the TAMx significantly correlated to that of the initial detection of the avascular area. CONCLUSIONS: In the beginning, metastatic LNs were depicted as hypervascular structures while the TAMx at the hilum increased. Later, an avascular area was detected and the TAMx at the hilum decreased, which resulted in a blood supply to the node from the peripheral vessels.
Toru Chikui; Kenji Yuasa; Satoshi Maemura; Shigenobu Kanda
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics     Volume:  93     ISSN:  1079-2104     ISO Abbreviation:  Oral Surg Oral Med Oral Pathol Oral Radiol Endod     Publication Date:  2002 Mar 
Date Detail:
Created Date:  2002-04-01     Completed Date:  2002-07-17     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  9508562     Medline TA:  Oral Surg Oral Med Oral Pathol Oral Radiol Endod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  350-7     Citation Subset:  D; IM    
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
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MeSH Terms
Carcinoma, Squamous Cell / blood supply*,  secondary,  ultrasonography*
Lymph Nodes / blood supply*,  ultrasonography*
Lymphatic Metastasis / ultrasonography*
Mouth Neoplasms / pathology
Ultrasonography, Doppler / methods

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