Diagnostic Ultrasound - Abdomen and Pelvis
Focal Extratesticular Mass Inguinal Hernia Inguinal Hernia (Left) Oblique ultrasound shows an inguinoscrotal hernia, containing small bowel loops ſt, and mesentery . Note the bowel wall (gut signature), which distinguishes this from a cord or epididymal mass. Note the fluid in the hernia sac st. (Right) Longitudinal ultrasound shows an ill-defined, lobulated, echogenic st structure herniating into the scrotum , features suggestive of an omentocele. Differential Diagnoses: Scrotum Fatty Deposition Fatty Deposition (Left) Longitudinal ultrasound shows an ill-defined hyperechoic structure ſt surrounding the epididymis st. This "pseudomass" is due to the deposition of fat. (Right) Transverse ultrasound shows an ill-defined, hyperechoic structure ſt in the region of the body and head of the epididymis. No obvious discrete mass is identifiable. This "pseudomass" is likely due to the deposition of fat. Parts of epididymis can be seen as small hypoechoic areas within the "pseudomass." Note the normal testis st. Encysted Hydrocele of Cord Encysted Hydrocele of Cord (Left) Longitudinal ultrasound shows an elongated anechoic fluid collection ſt within layers of the distal spermatic cord in the inguinoscrotal region. Note the splayed layers st of the proximal spermatic cord, features suggestive of an encysted hydrocele of the spermatic cord. (Right) Transverse ultrasound shows a chronic, fluid collection ſt with multiple fine septations in the inguinoscrotal region representing an encysted hydrocele of the spermatic cord. 1021
Focal Extratesticular Mass Differential Diagnoses: Scrotum (Left) Solid and cystic extratesticular mass in a patient with with VHL is compatible with a papillary cystadenoma. (Right) Power Doppler shows brisk flow within the solid components of a papillary cystadenoma. Papillary Cystadenoma Papillary Cystadenoma (Left) Power Doppler ultrasound shows relative hypovascularity within a hyperechoic, wellcircumscribed epididymal lipoma . (Right) Oblique ultrasound shows a poorly defined, hypoechoic abscess ſt within the layers of the scrotum, due to the spread of infection from the adjacent inflamed epididymis . Note the track st along which the infection has reached the scrotal wall. Lipoma Epididymal/Scrotal Wall Abscess (Left) A markedly enlarged epididymis ſt with central liquefactive necrosis indicating abscess formation in a patient with subacute epididymitis not responding to antibiotic therapy. (Right) Round hypoechoic collection st representing abscess within an enlarged and hyperemic epididymis in a patient with chronic urinary tract infections and bilateral epididymitis. Note the Doppler flow surrounding, but not within, the collection. Epididymal/Scrotal Wall Abscess Epididymal/Scrotal Wall Abscess 1022
- Page 992 and 993: Solid Renal Mass Renal Lymphoma Ren
- Page 994 and 995: Renal Pseudotumor Column of Bertin
- Page 996 and 997: Dilated Renal Pelvis • Intrarenal
- Page 998 and 999: Dilated Renal Pelvis Pyonephrosis P
- Page 1000 and 1001: PART III SECTION 7 Abdominal Wall/P
- Page 1002 and 1003: Diffuse Peritoneal Fluid Hemoperito
- Page 1004 and 1005: Solid Peritoneal Mass - Higher dens
- Page 1006 and 1007: Solid Peritoneal Mass Mimics Benign
- Page 1008 and 1009: Cystic Peritoneal Mass ○ Women of
- Page 1010 and 1011: Cystic Peritoneal Mass Pseudomyxoma
- Page 1012 and 1013: PART III SECTION 8 Prostate Enlarge
- Page 1014 and 1015: Enlarged Prostate Benign Prostatic
- Page 1016 and 1017: Focal Lesion in Prostate ○ Variab
- Page 1018 and 1019: Focal Lesion in Prostate Müllerian
- Page 1020 and 1021: PART III SECTION 9 Bowel Bowel Wall
- Page 1022 and 1023: Bowel Wall Thickening - Distal ileu
- Page 1024 and 1025: Bowel Wall Thickening Crohn Disease
- Page 1026 and 1027: Bowel Wall Thickening Clostridium D
- Page 1028 and 1029: PART III SECTION 10 Scrotum 1008
- Page 1030 and 1031: Diffuse Testicular Enlargement Test
- Page 1032 and 1033: Decreased Testicular Size Testicula
- Page 1034 and 1035: Testicular Calcifications Sertoli C
- Page 1036 and 1037: Focal Testicular Mass - Most common
- Page 1038 and 1039: Focal Testicular Mass Testicular Ly
- Page 1040 and 1041: Focal Extratesticular Mass - 3-50 m
- Page 1044 and 1045: Focal Extratesticular Mass Liposarc
- Page 1046 and 1047: Extratesticular Cystic Mass Varicoc
- Page 1048 and 1049: PART III SECTION 11 Female Pelvis
- Page 1050 and 1051: Cystic Adnexal Mass □ Hemorrhagic
- Page 1052 and 1053: Cystic Adnexal Mass Dermoid (Mature
- Page 1054 and 1055: Solid Adnexal Mass - May masquerade
- Page 1056 and 1057: Solid Adnexal Mass Fibrothecoma Hem
- Page 1058 and 1059: Extraovarian Adnexal Mass Helpful C
- Page 1060 and 1061: Extraovarian Adnexal Mass Paraovari
- Page 1062 and 1063: Extraovarian Adnexal Mass Lymph Nod
- Page 1064 and 1065: Enlarged Ovary - Often bilateral (5
- Page 1066 and 1067: Enlarged Ovary Theca Lutein Cysts T
- Page 1068 and 1069: Enlarged Uterus Leiomyoma Adenomyos
- Page 1070 and 1071: Abnormal Endometrium ○ Multiple e
- Page 1072 and 1073: Abnormal Endometrium Pregnancy and
- Page 1074 and 1075: Abnormal Endometrium Tamoxifen-Indu
- Page 1076 and 1077: INDEX A Abdominal aorta, 34, 40, 42
- Page 1078 and 1079: INDEX - myelolipoma vs., 590 - stag
- Page 1080 and 1081: INDEX Biliary cyst. See Choledochal
- Page 1082 and 1083: INDEX Caroli disease, 204-207 - bil
- Page 1084 and 1085: INDEX - solid renal mass vs., 968 -
- Page 1086 and 1087: INDEX diagnostic checklist, 839 dif
- Page 1088 and 1089: INDEX Efferent ductules, 130 Ejacul
- Page 1090 and 1091: INDEX Focal myometrial contraction
Focal Extratesticular Mass<br />
Differential Diagnoses: Scrotum<br />
(Left) Solid <strong>and</strong> cystic<br />
extratesticular mass in a<br />
patient with with VHL is<br />
compatible with a papillary<br />
cystadenoma. (Right) Power<br />
Doppler shows brisk flow<br />
within the solid components<br />
of a papillary cystadenoma.<br />
Papillary Cystadenoma<br />
Papillary Cystadenoma<br />
(Left) Power Doppler<br />
ultrasound shows relative<br />
hypovascularity within a<br />
hyperechoic, wellcircumscribed<br />
epididymal<br />
lipoma . (Right) Oblique<br />
ultrasound shows a poorly<br />
defined, hypoechoic abscess<br />
ſt within the layers of the<br />
scrotum, due to the spread of<br />
infection from the adjacent<br />
inflamed epididymis . Note<br />
the track st along which the<br />
infection has reached the<br />
scrotal wall.<br />
Lipoma<br />
Epididymal/Scrotal Wall Abscess<br />
(Left) A markedly enlarged<br />
epididymis ſt with central<br />
liquefactive necrosis <br />
indicating abscess formation<br />
in a patient with subacute<br />
epididymitis not responding to<br />
antibiotic therapy. (Right)<br />
Round hypoechoic collection<br />
st representing abscess<br />
within an enlarged <strong>and</strong><br />
hyperemic epididymis in a<br />
patient with chronic urinary<br />
tract infections <strong>and</strong> bilateral<br />
epididymitis. Note the Doppler<br />
flow surrounding, but not<br />
within, the collection.<br />
Epididymal/Scrotal Wall Abscess<br />
Epididymal/Scrotal Wall Abscess<br />
1022
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