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Ovarian dermoid presenting as unilateral obstructive uropathy

A 17-year-old female patient presented to the emergency department with history of intermittent right sided colicky abdominal pain and nausea since 3 weeks. Urine analysis revealed no evidence of infection. She was referred for imaging workup, which included an abdominal ultrasound examination that revealed right sided mild hydroureteronephrosis, but the distal ureter could not be visualised due to poor acoustic window. However, a vague right adenexal cystic lesion (figure 1) was noted and a CT scan was advised to characterise the lesion and to assess the cause for the obstructive uropathy.



Figure 1 
Ultrasound image showing …