A 47-year-old woman with Turner's syndrome was admitted to the emergency room with anemic syndrome and melena. She has a history of hypothyroidism, premature ovarian insufficiency and chronic iron deficiency. She reported previous overt gastrointestinal (GI) bleeding attributed to duodenal vascular lesions. Endoscopic treatment and blood transfusion were performed. She received estroprogestative therapy, thyroid hormone substitution and oral iron replacement therapy on the long run. Hemoglobin rate was 6.1 g/dL. Upper GI endoscopy was normal, colonoscopy showed blood clots in the ileum and in the right colon. Small bowel capsule endoscopy identified active jejunal bleeding. Both capsule endoscopy and deep enteroscopy identified multiple, tiny, looped telangiectasias in the duodenum and jejunum (Fig 1 and Fig 2) which were ablated using argon plasma coagulation. GI bleeding and iron deficiency recurred several times during the three years follow-up. Long-acting release octreotide treatment was initiated and progressively increased due to recurrent GI bleeding. Parenteral iron supplementation were performed. Further endoscopic investigations identified once again non hemorrhagic typical looped small bowel telangiectasias. Eradication treatment consisted in argon plasma coagulation. Case reports have described hemorrhagic GI vascular abnormalities responsible for longstanding iron deficiency anemia and overt GI bleeding in women with Turner's syndrome.(1) These vascular lesions were predominantly (72%) located in the small bowel where they can be diagnosed with capsule or enteroscopy. Authors usually use the terms telangiectasia, prominent submucosal vascular network, and/or phlebectasia to describe these lesions. Reports describing abnormalities observed during laparoscopic evaluation mentioned segmentally distended veins on the serosal surface of the small and large bowel (1,2,3). Exceptional reports of perendoscopic biopsies mentioned superficial telangiectasia of the mucosa, and an enterectomy pathological analysis showed medium-sized ectasic, congestive vessels in the mucosa and serosa.(3) The small bowel microvasculature lesions reported in association with Turner's syndrome thus differ from angiodysplasias. Angiodysplasias are typically described as flat lesions, consisting of tortuous and clustered capillary dilatations, within the mucosal layer (4) either seen in a sporadic manner or as observed in Osler-Weber-Rendu syndrome (4,6). Still, because loop telangiectasias in Turner's syndrome are tiny, superficial vascular lesions, we attempted a similar treatment to that of angiodysplasia (5), with first-line (argon plasma coagulation) and second-line (long-acting release octreotide), resulting in significant biological improvement in our patient. At 6 months of follow-up after octreotide optimization, no recurrence occurred, hemoglobin rate was 14.1 g/dL with ferritinemia at 16 ng/mL.
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