Differential diagnosis of lower abdominal pain

Diagnosis Sonographic signs
Common
Appendicitis

Diverticulitis
Less common
Hernia
Renal colic

Rare
Epiploic appendagitis

Urinary retention

Adnexitis
Torsion of an ovarian cyst

Tubal rupture

Testicular torsion


Abnormal target pattern, typical layered wall structure
Thickened, hypoechoic bowel wall; partial acoustic shadow
from trapped air
Hernia sac with wall-thickened bowel loops
Obstructed, anechoic pyelocalyceal system, twinkling artifact

Fat necrosis of an epiploic appendix
Strongly distended bladder; obstructed, anechoic renal pelvis
Mixed cystic and solid mass, wall thickening
Unilateral ovarian enlargement with a cystic mass

Enlarged uterus, parauterine free fluid
Enlarged, isoechoic testis, hydrocele
image
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Chest X Ray Imaging