Year 2021 Vol. 29 No 3




Smolensk State Medical University 1,
Smolensk Regional Institute of Pathology 2,
Emergency Clinical Hospital 3, Smolensk,
The Russian Federation

The appendix anomalies are extremely rare malformations. Preoperative diagnosis of appendiceal duplication is often difficult and usually discovered incidentally during surgery for appendicitis. 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.

Keywords: congenital malformation, duplication of the vermiform appendix, appendiceal infiltrate, chronic appendicitis, intestinal visceral myopathy
p. 376-381 of the original issue
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Address for correspondence:
214019, Russian Federation,
Smolensk, Krupskaia Str., 28,
Emergency Clinical Hospital, Surgery Unit;
tel. +7(4812)242000, additional number 280,
tel. +375 29 651-35-69,
Sergeev Alexey V.
Information about the authors:
Ukrainets Roman V., Pathologist, the Department of Clinical Pathology No2, Smolensk Regional Institute of Pathology, Assistant of the Department of Pathological Anatomy, Smolensk State Medical University, Smolensk, Russian Federation.
Korneva Yulia S., PhD, Associate Professor of the Department of Pathological Anatomy, Smolensk State Medical University, Pathologist, the Department of Clinical Pathology No2, Smolensk Regional Institute of Pathology Smolensk, Russian Federation.
Sergeev Alexey V., PhD, Associate Professor of the Department of Hospital Surgery, Smolensk State Medical University, Head of the Surgical Unit of the Emergency Clinical Hospital, Smolensk, Russian Federation.
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