Objective:

To analyze the ultrasound images characteristics of the abdominal localized Castlemans disease and im-prove the recognition and preoperative diagnosis accuracy of this disease.

Methods:

From Jul. 2011 to Nov. 2019

the ultrasonic images of 25 patients with abdominal localized Castlemans disease confirmed by pathological diagnosis

including 3 cases with contrast-enhanced ultrasound (CEUS) were retrospectively evaluated. Tumor characteristics on both gray-scal

e ultrasound and CEUS were further summarized.

Results:

There are 25 patients in this group

including 17 cases of clear blood vessel type

7 cases of plasma cell type and 1 case of mixed type. There were 19 cases with low echo

23 cases with clear boundary

17 cases with regular shape

and 20 cases with heterogeneous echo on gray-scale ultrasound. There were 11 cases with point and thin line hyperechoic

13 cases with calcification which including 6 of them were thick line calcification

and 4 cases with both point

thin line hyperechoic and calcification. On color doppler flow imaging (CDFI)

rich blood flow was detected in 16 lesions

among which 5 lesions with lymph node portal-like blood supply. On CEUS

all 3 cases showed a fast wash-in pattern in arterial phase. Tumor enhancement degree at peak time was varied. Two lesions in the delay period showed hypoechoic

while the other one showed slightly hyperechoic with a small unenhanced area in the center.

Conclusion:

The gray-scale ultrasound features of abdominal localized Castleman disease are of heterogeneous hypoecho and abundant blood supply. Point or thin linear hyperechoic septa

calcification especially thick linear calci-fication and lymph node portal-like blood supply are relatively specific ultrasonic features of this disease.