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help with CT results? WTH is 23 Hounsfield units
EXAM: 001653909 ABDOMEN PELVIS W/O CONTRAST
Reason For Procedure: L FLANK PAIN

CT SCAN OF THE ABDOMEN AND PELVIS:

TECHNIQUE: 3 mm thin axial images of the abdomen and pelvis were obtained
without intravenous or oral contrast material.

COMPARISON: March 12, 2010.

FINDINGS: A group of nonobstructing calcifications are again seen in the left
renal pelvis measuring approximately 1.4 cm and appears bigger when compared to
the prior study. A 1.7 cm soft tissue density is seen again in the right kidney
laterally (it measures 23 Hounsfield units). There are extrarenal pelves
bilaterally.

The visualized lung bases are clear. In the absence of intravenous and oral
contrast material, the sensitivity of CT decreases significantly for detection
of other intra-abdominal pathologies. Within this limitation, no gross
abnormality of the liver, spleen, pancreas, adrenal glands, and gallbladder is
seen. Bowel loops appear unremarkable without evidence of obstruction. The
patient reported history of hysterectomy. However, two soft tissue densities
are seen next to each and just posterior to the urinary bladder and appears
slightly less prominent since the prior study. True nature of this is not clear
at these may represent ovaries. No free air or free fluid is seen.

IMPRESSION: 1. GROUP OF NONOBSTRUCTING STONES IN THE LEFT RENAL PELVES WITH
SOME INTERVAL ENLARGEMENT IN SIZE SINCE THE 3/12/2010 STUDY.
EXTRARENAL PELVES BILATERALLY.

2. A 1.7 CM SOFT TISSUE DENSITY IN THE RIGHT KIDNEY THAT DOES NOT
SHOW TYPICAL APPEARANCE OF A CYST. THIS CAN BE FURTHER
EVALUATED WITH ULTRASOUND OR MRI IF CLINICALLY INDICATED.
DIFFERENTIAL DIAGNOSIS INCLUDES HYPERDENSE CYST VERSUS TUMOR.

3. NONSPECIFIC FULLNESS OF BOTH ADNEXAL REGIONS. THIS CAN BE


EXAM: 001653909 ABDOMEN PELVIS W/O CONTRAST
Reason For Procedure: L FLANK PAIN


FURTHER EVALUATED WITH MRI OF THE PELVIS IF CLINICALLY
INDICATED

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What exactly does this mean translated? What the hell are hounsfield units anyway?
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