Aim: To report uncommon two cases with trichobezoar obstructing the gastric outlet within six months interval at our 
hospital. 
Methods: Two girls, 9 and 6-years old, presented with epigastric pain, nausea and non bilious vomiting about 6 and 
4days before admission. There was a history of early satiety. By examining the abdomen a hard upper abdominal mass 
was palpated in each. Both mothers noticed irregularity in lengths of their daughter's hair but they don't know if they 
swallow their own hair during the previous 2-years. Ultrasound, gastroscopy, barium meal x-ray and CT scan proved the 
presence of a large foreign body in the stomach of each girl. Surgical laparotomy revealed large hairballs obstructing 
pyloric canal and extends through the duodenum into the proximal part of jejunum. 
Results: Through gastrostomy the hairballs extracted and the stomach closed in 2-layer sutures. Postoperative course 
was uneventful and no recurrence noted during the next 16 and 10 months of follow-up. 
Conclusion: This report demonstrates 2-uncommon (not rare) foreign bodies which impacted and obstructing the outlet of the stomach incidentally discovered within a short period interval without recurrence after surgery. We believe that the surgical trauma would be enough to cut the habit of hair biting and prevent recurrence of trichobezoars.