Pathologic correlation of resistive and pulsatility indices in canine abdominal lymph nodes.
We assessed the ability of the resistive index (RI) and pulsatility index (PI) to allow differentiation between normal, reactive, and neoplastic lymph nodes. Forty-seven medial iliac and 54 mesenteric lymph nodes from 83 dogs were evaluated sonographically. A cytologic sample was obtained in each dog that allowed categorization into one of the categories defined above. We found a significant difference in the RI and PI in nonneoplastic vs. neoplastic medial iliac and mesenteric lymph nodes. Values higher than 0.67 for the RI and 1.02 for the PI in medial iliac lymph nodes and higher than 0.76 for the RI and 1.23 for the PI in mesenteric lymph nodes had a high sensitivity and specificity for differentiating benign from neoplastic lymph nodes.
Veterinary Hospital V3, Joc de la Bola 22, CP 25003 Lleida, Spain.
Saúl
S
Prieto
Pablo
P
Gomez-Ochoa
Ignacio
I
De Blas
Manuel
M
Gascón
Carmen
C
Aceña
Andrea
A
Corda
Iván
I
Sosa
Tommaso
T
Gregori
Guillermo
G
Couto
D000005:Abdomen; D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D004285:Dogs; D005260:Female; D008198:Lymph Nodes / Q000000981:diagnostic imaging* / Q000502:physiology / Q000503:physiopathology; D008207:Lymphatic Metastasis / Q000000981:diagnostic imaging; D008297:Male; D018617:Ultrasonography, Doppler, Pulsed / Q000662:veterinary*