Abstract (1 december 1935)
Enteric cysts, sometimes called enterogenous or developmental cysts, are structurally similar to the intestines. Their cavity, containing a mucoid substance, is usually lined by epithelial cells with an underlying layer of lymphoid tissue and smooth muscle. Increasing internal pressure and consequent impairment of blood supply may cause localized atrophy or other structural changes. According to Ewing,1 their origin is from some bud or pouch along the intestinal tract, and Evans2 believes them to be related to the more common diverticula of childhood. The usual location in the ileocecal area may be explained by the fact that there is a remnant ...
Once identified, enterogneous cysts should be resected because complications can be fatal.
Shah N, Lizardo-Escaño T, Shaaban H, Dhadham G, Karki A, Spira R. Enterogenous cyst of the small bowel causing intussusception in an adult: Case report and review of literature. J Nat Sc Biol Med [serial online] 2015 [cited 2018 Sep 14];6:208-10. Available from: http://www.jnsbm.org/text.asp?2015/6/1/208/149124
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3789938/
...
The role of radiological techniques is to demonstrate an abdominal mass and identify the organ, from which the mass originates. The second step in radiological diagnosis is determination of the nature, relationship to surrounding organs and size of the cyst. On imaging work-up, US plays a decisive role in the diagnosis. US differentiates the cystic nature of duplications from solid tumors and also demonstrates an intimate association between the duplication and the bowel wall. Reliable indicators of a duplication cyst include an inner echogenic rim of intestinal mucosa surrounded by a characteristic hypoechogenic rim of muscle in the wall, indicating various layers of the intestine, as well as inner debris or hemorrhage. Inner echogenic contents may develop due to mucous and proteinaceous secretions or to hemorrhage or infection within the cyst. In such cases, establishing ultrasound diagnosis may be difficult because heterogeneous contents or obliteration of the cystic wall mimic other abdominal conditions such as abscesses or tumors. Computed tomography (CT) and MRI can define its precise anatomic location. They can be helpful in difficult cases that require multiplanar approach. MRI can be useful for demonstration of the cystic nature of these masses, as these lesions continue to have characteristically high signal intensity when imaged with T2W sequences regardless of the nature of cystic contents [2–4,6–9].
Because of their common location at the mesenteric border, they may be easily mistaken for mesenteric or omental cysts, only to be identified by mucosal rather than endothelial lining [3–6].
When facing such a huge abdominal cystic mass, differential diagnoses including duplication cyst, omental cyst, mesenteric cyst, huge diverticulum, cystic tumor of the pancreas, hemorrhagic pseudocyst secondary to pancreatitis, choledochal cyst, postinflammatory abscess formation and cystic or necrotic tumors secondary to degeneration, should be considered (Table 1) [1,3,5–7,9,10].
In conclusion, enteric duplication cyst should be taken into account in a patient with an abdominal cystic mass. Abdominal US can be highly suggestive in the diagnosis of duplication cyst. MR imaging may be useful as a noninvasive technique for the diagnosis and accurate preoperative assessment of the cystic mass. Radiologist must consider patient age, clinical parameters and imaging findings when stating the likely etiology of the cystic mass.
Available from: https://www.researchgate.net/publication/313423322/download [accessed Sep 14 2018].
Introduction: Enterogenous cysts are a very rare congenital abnormality that
can be found anywhere within the gastrointestinal tract, most commonly in the
small intestine. The exact incidence is unknown, because present literature
review consists of solitary case reports or small case series. Enterogenous cyst
diagnostic characteristics include (1) a well-developed coat of smooth muscle,
(2) an epithelial lining of alimentary tract mucosa, and (3) intimate anatomic
association with some portion of gastrointestinal tract. They are usually
diagnosed in the first 2 years of life manifesting with abdominal pain or
palpable masses or incidentally as asymptomatic during adulthood. Case
presentation: A 23-year-old woman presented with slightly painful mass in right
inguinal region of 5 months duration. CT scan and ultrasound revealed cystic
formation in right retroperitoneal space. Based on radiological findings,
retroperitoneal cystic lymphangioma was diagnosed and the patient had undergone
surgery. During laparotomy, 7 x 7 x 5 cm cystic mass was identified on mesentery
and excised. Histological results showed thick cyst coat with smooth muscle
fibers. The final pathological diagnosis: enterogenous cyst with inflammation.
Conclusion: Complete excision of the enterogenous cyst is the optimal treatment.
The correct diagnosis usually emerges after the operation and histological
examination of the cyst.