Sonographic classification of testicular tumors by tissue harmonic imaging: experience of 58 cases.
OBJECTIVE
To evaluate the relationship between our proposed sonographic classification of testicular tumors by tissue harmonic imaging and histological type.


METHODS
We retrospectively analyzed 58 testicular tumors and tumor-like lesions [seminomatous germ cell tumor (SGCT): 28; non-seminomatous germ cell tumor (NSGCT): 16; lymphoid and hematopoietic tumor (LHT): 7; Leydig cell tumor: 1; epidermal cyst: 2; and tumor of paratesticular structure (TPS): 4]. We divided a sonographic image into six types for morphological criteria and three types for color Doppler criteria. We examined the relationship between the sonographic classification and histological type.


RESULTS
For morphological criteria, there were 21 cases of Type I (36%), 15 Type II (26%), 9 Type III (15%), five Type IV (9%), five Type V (9%), and three Type VI (5%). For color Doppler criteria, there were 47 cases classified as hypervascular (81%), eight as hypovascular (14%), and three as avascular (5%). Most of the SGCTs were divided into types I and II; the NSGCTs into types III, IV, and V; the LHTs into only type II; and the TPSs into type VI.


CONCLUSIONS
We established a sonographic classification of testicular tumors with various histological types. This sonographic classification is potentially useful for estimating the histological type of testicular tumors.
Division of Ultrasound and Department of Diagnostic Imaging, Tokyo Medical University Hospital, 6-7-1 Nishishinjuku, Shinjukuku, Tokyo, 160-0023, Japan. a-kawamo@tokyo-med.ac.jp.
Atsuo
http://orcid.org/0000-0003-3204-5433
A
Kawamoto
Department of Urology, Tokyo Medical University, Tokyo, Japan.
Tadashi
T
Hatano
Department of Radiology, Tokyo Medical University, Tokyo, Japan.
Kazuhiro
K
Saito
Department of Anatomic Pathology, Tokyo Medical University, Tokyo, Japan.
Rie
R
Inoue
Department of Anatomic Pathology, Tokyo Medical University, Tokyo, Japan.
Toshitaka
T
Nagao
Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.
Shigeru
S
Sanada
D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013736:Testicular Neoplasms / Q000145:classification* / Q000000981:diagnostic imaging* / Q000473:pathology; D018615:Ultrasonography, Doppler, Color; D055815:Young Adult
Testicular tumor; Testis; Tissue harmonic imaging; Ultrasonography