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PARTIAL DUPLICATION OF VERMIFORM APPENDIX AS A CAUSE OF THE APPENDICEAL INFILTRATE

The appendix anomalies are extremely rare malformations. Preoperative diagnosis of appendiceal duplication is often difficult and usually discovered incidentally during surgery forappendicitis. A clinical case of the development of chronic residual appendicitis in a 32-year-old woman with the abnormality of the vermiform appendix identified duplicity, type A according to the Cave-Wallbridge classification is described. During the first hospitalization, the patient was treated conservatively with a diagnosis of «a dense appendiceal infiltrate»; later, a planned appendectomy was performed. A duplication of the vermiform appendix type A was revealed during the examination of the removed appendix. Histopathological examination detected the underdevelopment of the wall of the accessory vermiform appendix - a complete absence of the outer longitudinal layer of the muscular membrane. The abnormally thin wall of the accessory appendix, as well as the related with it hypoperistalsis provoked the onset of chronic inflammation in the wall, which easily spread to the periappendiceal adipose tissue with the formation of a dense appendiceal infiltrate, which required surgical intervention. Thus, a rare clinical case of duplication of the vermiform appendix type A with forming of appendiceal infiltrate, associated with abnomality of muscular tissue, shown by the surgical findings and corroborated by pathology samples of intestinal tissue has been presented.