SummaryThis case report illustrates the difficulties in making the clinical diagnosis of gallstone ileus. In addition to an unusual clinical picture, the changes normally expected on abdominal X-ray in gallstone ileus were subtle and missed in our patient. The diagnosis was made using abdominal computerised tomography (CT). We recommend the early use of abdominal CT scanning in the investigation of clinical bowel obstruction, especially in the elderly, where gallstone ileus is a more common condition.

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IntroductionPrimary pulmonary mucinous cystadenocarcinoma is a rare variety of lung cancer. It is characterized pathologically by copious mucin production predominantly in the extracellular space. This tumour has a remarkably favorable prognosis.Case presentationWe present imaging and histopathological findings of primary pulmonary mucinous cystadenocarcinoma presenting as a complex bronchocele in a 67-year-old Caucasian woman.ConclusionDiagnosis of pulmonary mucinous cystadenocarcinoma should be considered in patients presenting with bronchocele that has suspicious imaging features, because the results of fine needle aspiration cytology and bronchoscopy are frequently inconclusive in these tumours. Positive emission tomography has an important role in helping to identify these tumours.

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