Inflammatory pseudotumour of the colon.

Annals of the Royal College of Surgeons of England

PubMedID: 28462661

Spyrou I, Davakis S, Moris D, Lakiotaki E, Dimitrokallis N, Papalampros A, Schizas D, Pikoulis E, Felekouras E. Inflammatory pseudotumour of the colon. Ann R Coll Surg Engl. 2017;99(5):e151-e153.
A colorectal inflammatory myofibroblastic tumour (IMT) is a rare but benign entity masquerading as a malignant tumour.Although the lung is considered the most common site of occurrence, IMTs may arise in diverse extrapulmonary locations. We describe a case of a colonic IMT in a patient who presented in the emergency setting.

A 77-year-old man was admitted at our emergency department with acute abdominal pain.Physical examination revealed vague tenderness of the lower abdomen and non-palpable masses. Preoperative evaluation revealed a mass in the right lower quadrant of the abdomen, possibly originating from the terminal ileum, 1-2cm from the caecum. Owing to the clinical impression of a potentially malignant lesion, the patient underwent subtotal colectomy and omentectomy. The pathology report suggested the morphological and immunohistochemical features were more compatible with a colonic IMT.

A colorectal IMT is a rare clinical entity that can easily mimic a highly malignant tumour and cannot be distinguished clinically or radiologically.An accurate diagnosis is based on histological examination and surgical resection is therefore usually required.