Pyelogram

Pyelogram (or pyelography or urography) is a form of imaging of the renal pelvis and ureter.[1]

Pyelogram
ICD-9	87.73, 87.74, 87.75
MeSH	D014567
OPS-301 code	3-13d

Types include:

• Intravenous pyelogram – In which a contrast solution is introduced through a vein into the circulatory system. This is a form of anterograde pyelogram.
• Retrograde pyelogram – Any pyelogram in which contrast medium is introduced from the lower urinary tract and flows toward the kidney (i.e. in a "retrograde" direction, against the normal flow of urine).
• Anterograde pyelogram (also antegrade pyelogram) – Any pyelogram where a contrast medium passes from the kidneys toward the bladder, mimicking the normal flow of urine.
• Gas pyelogram – A pyelogram that uses a gaseous rather than liquid contrast medium.[2]

References

1. "pyelography" at Dorland's Medical Dictionary
2. Urology Secrets, 2nd Ed.,; Resnick, MD, Novick, MD; Hanley & Belfus, Inc., 1999, esp Chapt. 13, Evaluation of Hydronephrosis in Children by Kay, MD.