Question:medium
Identify the X-ray HSG (hysterosalpingogram) shown below.
Identify the X-ray HSG (hysterosalpingogram) shown below.
Show Hint
A single banana-shaped, laterally deviated cavity with only one tube filling.
Updated On: Jun 23, 2026
- Septate uterus
- Uterus didelphys
- Unicornuate uterus
- Bicornuate uterus
Show Solution
The Correct Option is C
Solution and Explanation
Step 1: Count the horns the contrast fills. In this HSG only one elongated cavity lights up and just one tube is seen, instead of the two-horned shapes the other options would give.
Step 2: Picture the embryology. The uterus forms from two Mullerian ducts fusing; if one duct fails to develop, only a single horn results. That single, curved, cigar- or banana-shaped cavity pulled to one side is the unicornuate uterus.
Step 3: Compare the shapes. Bicornuate and septate uteri both fill two divergent horns with two tubes, separated by a cleft or septum, and didelphys shows two entirely separate cavities with duplicated cervices.
Step 4: Since the film shows just one lateralised horn and one tube rather than any paired pattern, it can only be a unicornuate uterus.\[\boxed{\text{Unicornuate uterus}}\]
Step 2: Picture the embryology. The uterus forms from two Mullerian ducts fusing; if one duct fails to develop, only a single horn results. That single, curved, cigar- or banana-shaped cavity pulled to one side is the unicornuate uterus.
Step 3: Compare the shapes. Bicornuate and septate uteri both fill two divergent horns with two tubes, separated by a cleft or septum, and didelphys shows two entirely separate cavities with duplicated cervices.
Step 4: Since the film shows just one lateralised horn and one tube rather than any paired pattern, it can only be a unicornuate uterus.\[\boxed{\text{Unicornuate uterus}}\]
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