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Competing Interests: Competing interests: None declared.

A 35-year-old woman presented to the surgical clinic complaining of right hypochondrial pain for 4 days. Abdominal examination revealed tenderness on deep palpation in the right hypochonrdium, with no palpable organs or masses. The patient had repeated attacks of the same pain that mandated repeated admissions to the emergency hospital and treated conservatively. The white blood cell count was 13 000 cells/μL. Ultrasound examination of the abdomen showed thick-walled gall bladder, thick bile, with no visible stones and acalculous cholecystitis was the diagnosis. Decision done for laparoscopic cholecystectomy. After removal of the gall bladder and opening the bladder, a thick milky contents was found to fill the gall bladder with no stones. The diagnosis of limy bile syndrome then done. Histopathological examination of the gall bladder showed features of chronic cholecystitis with no malignancy. The patient discharged on the third postoperative day with no complications., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.)

Juvenile dermatomyositis (JDM) is a rare autoimmune disease, characterised by a systemic capillary vasculopathy that typically affects skin and muscle. Gastrointestinal involvement is relatively rare. We report the case of an 11-year-old girl admitted for investigation of skin rash, progressive symmetric proximal muscle weakness, dysphagia and weight loss. The diagnosis of JDM was confirmed and during hospitalisation the patient developed abrupt and intense right hypocondrium pain associated with nausea and vomiting. Abdominal ultrasound revealed a thick gallbladder wall (8 mm) with pericholecystic fluid and no evidence of gallstones. An acute acalculous cholecystitis was assumed and the patient was started on intravenous fluids, prednisolone and analgaesic therapy. Clinical resolution was verified after 48 h. We hypothesised that the vasculitic process of JDM could have been the basis for this complication as described in other autoimmune diseases., (2014 BMJ Publishing Group Ltd.)