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Mesenteric cysts have been documented as a rare occurrence in children. They are mostly renowned to be benign intra-abdominal tumors with no known etiology. The symptoms are non-specific ranging from being asymptomatic to an acute abdomen. Most of the diagnoses are made below the age of 10 years with devoid of reports for the early neonatal occurrences. We report a case of an early neonatal mesenteric cyst in a 5-day-old female patient who presented with signs of intestinal obstruction markedly by abdominal distension, vomiting, and absolute constipation. Abdominal X-ray showed evidence of small bowel obstruction while abdominal ultrasound and computed tomography (CT) scan were used to reach the diagnosis of a mesenteric cyst, all laboratory baseline investigations were within a normal range. On laparotomy a 12 by 13 cm cyst that was firmly adhering to the proximal ileal wall was meticulously dissected, complete cystectomy was done with no segmental resection. Histopathologically there were no signs of malignancy and the patient successfully recovered with no signs of recurrences after being followed for a year and a half. Being a rare case in the early neonatal period with unspecific presentations; mesenteric cyst should be considered as one of the diagnoses best to be managed by surgical excision to prevent recurrences., Competing Interests: The authors declare no competing interests., (Copyright: Seth Jotham et al.)

Mesenteric lymphatic malformations are rare lesions and its diagnosis can cause dilemma in spite of imaging studies. A laparotomy revealed this diagnosis in a five-year-old child who presented with abdominal pain., Competing Interests: Declaration of Competing Interest None declared., (Copyright © 2022. Published by Elsevier Ltd.)

Background: The aim of this study is to retrospectively and multi-centerly examine the clinicopathological features of patients who were operated with the diagnosis of mesenteric cyst, which is a rare cause of intra-abdominal mass in the last 9 years, in the light of the literature., Methods: The patients were operated due to mesenteric cysts in the general surgery clinics of two Training and Research Hospital between 2010 and 2019; age, gender, preoperative clinical findings, computed tomography (CT) findings, localization of the mass, surgical procedure, morbidity, histopathological results, and follow-up period status were analyzed and reported electronically., Results: The patients generally applied with the complaints of abdominal pain, palpable abdominal mass, and abdominal distention. Fourteen (63.7%) of the cases were male and 8 (36.3%) were female. The mesenteric cysts were located in the small intestine in 18 cases and colon in 4 cases. In the histopathological examination of the surgical materials, simple cyst was detected in 17 cases, lymphangioma in 4 cases, colon adenocarcinoma, and simple cyst in 1 case. In the postoperative period, superficial surgical site infection developed in 3 patients and morbidity developed in 1 patient due to anastomotic leakage., Conclusion: Although mesenteric cysts are rarely seen, although most of them are not histopathologically malignant, they can reach large sizes and require extensive surgical operation, and related morbidities can be seen. Therefore, mesenteric cysts should be followed carefully in the postoperative period as well as during the diagnosis and surgical treatment process., (© 2020. Springer Science+Business Media, LLC, part of Springer Nature.)

Background: Amyand's hernia is a rare condition approximately 0.4-0.6% of all inguinal hernias. Although rare, the Amyand's hernia is worthy of discussion since the variable presentation that make clinical challenge to diagnose especially in infant. A mesenteric chylous cyst is rare disease and has not been reported in Amyand's hernia., Case Presentation: We report an unusual case of Type II Amyand's hernia with an enlarging chylous mesenteric cyst on the retrocaecal in the anulus into canalis inguinalis. A-2-months old infant presented with enlarging mass in the right scrotal. During laparotomy exploration, we found inguinal sac with intestinal and appendix content in the sac. In the edge site of the sac we found enlarging of mesenteric cyst on the retrocaecal in the anulus into canalis inguinalis. Based on the histopathology examination, the morphological feature is suitable for mesenteric chylous cyst appearance., Conclusion: Presentation of mesenteric chylous cyst is rare, and there was no report about it in Amyand's hernia. This unusual presentation should be considered by the surgeon, especially pediatric surgeon, in Amyand's hernia cases.

Competing Interests: The authors declare that they have no conflict of interest

Competing Interests: Disclosure The authors report no conflicts of interest in this work.

Rationale: Mesenteric cysts are benign gastrointestinal cystic lesions, with an incidence of <1/100 000. They usually develop in the small bowel mesentery, mesocolon (24%), retroperitoneum (14.5%), and very rarely originate from the sigmoid mesentery. Endometriomas represent a localized type of endometriosis and are usually within the ovary. Our case is unique because there are no reports in the literature of endometrial mesenteric cysts., Patient Concerns: We present a case of a 29-year-old woman who underwent a routine gynecologic control., Diagnosis: Clinical examination and imaging identified 2 endometriomas on the left and posterior to the uterus., Interventions: The patient underwent exploratory laparoscopy. Unexpectedly, a 10 cm mesenteric cyst was identified; this was associated with adhesions in the left adnexal area and a left ovarian endometrioma. The classic surgical approach which was necessary identified the mesenteric cyst with cranial mesosigmoid and ileal adhesions, as well as distal adhesions which included the uterus, ileum, left ovarian endometrioma, left hydrosalpinx, left ureter, and rectum. The cyst was removed completely and a left adnexectomy was performed because of the presence of the endometrioma and adhesions., Outcomes: The patient's outcome was favorable, with discharge at 72 hours after surgery. The histopathological report revealed that both the mesenteric and ovarian cysts were endometriomas., Lessons: Our case is unusual in that a mesenteric cyst was identified in a patient with no clinical symptoms. Furthermore, the histopathological examination revealed the endometriotic origin of the mesenteric cyst which has not previously been reported in the literature.

Gorlin-Goltz syndrome (GGS) is an infrequent autosomal do-minant multisystemic disease with complete penetrance and variable expressivity. It is estimated to have an incidence of 1:50,000 - 1:150,000 cases with a M/F = 1:1. This report describes a case of recurrent abdominal pain due to a large mesenteric cyst in a 38-year-old female patient affected by a rare disease: Gorlin-Goltz syndrome.

Background: A mesenteric chylous cyst is defined as a cyst occurring in the mesentery of the gastrointestinal tract anywhere from the duodenum to the rectum and is diagnosed most often during the fifth decade of life., Case Presentation: In our case report, we describe a case of 38-year-old Greek woman who presented at our Emergency Department complaining of abdominal pain without any other symptoms. Her medical and family histories were clear and she had never had any abdominal interventions. During an imaging examination with ultrasound of her abdomen, an anechoic lesion in her upper left abdomen was revealed. In a further investigation with computed tomography, a well-defined hypodense cystic 7.08 × 6.05 cm mass with mild enhancement was noted. The mass was excised by open laparotomy within healthy borders and the specimen was sent for pathological examination. The histopathological findings were found to be most consistent with a simple lymphatic (chylous) cyst of the mesentery. A review of the literature considering this rare entity was also performed to evaluate our treatment strategy and the result was analyzed., Conclusions: Chylous cysts represent a diagnostic challenge and they should be considered when a physician encounters an intraabdominal mass. Physical examination and imaging do not always provide a diagnosis and surgical management should be advised due to the potential complications that may develop.

Mesenteric cysts are documented as a rare entity in pediatric population. They are considered as benign intra-abdominal tumors with an unknown etiology. Symptoms are not specific and knowledge of such condition is essential in order to establish a proper management. We report three pediatrics cases of mesenteric cysts managed between 2000 and 2009 in the pediatric surgery Department of Monastir College Hospital. We described the clinical, radiological and operative findings. Two males and a female were managed (age range: 10 days-5years, mean age: 6,3years). Two patients were presented with an intestinal obstruction. A preoperative diagnosis was made basing on imaging. Thus, abdominal ultrasonography was performed in all of our reported cases and showed a cystic mass in all cases. The cystic nature of the mass, its margins and its extension were better described on tomographic images. The mesenteric cyst was completely and successfully removed in all cases. The histopathological report confirmed the diagnosis and showed a multiloculated cyst with columnar mesothelial lining, without any defined muscular layer or cellular atypia and without any evidence of malignancy. The children were evaluated post-operatively with a mean follow-up of 2 years and a half. No recurrence was noted in our patients during the follow-up period. It is known that clinical features are not specific of such anomaly but once the diagnosis is made, the complete surgical removal of the cyst remains the treatment of choice with excellent outcomes., Competing Interests: The authors declare no competing interest.

Background: Mesenteric lymphatic malformations (MLs) are a heterogeneous group of benign diseases of the lymphatic system that present with cystic dilated lymphatics of the mesentery. MLs are rare and represent less than 5% of all lymphatic malformations. The aims of this study were to analyze the characteristics of MLs in children and to suggest a modified classification., Patients and Methods: We investigated 25 patients who underwent ML surgery. The clinical data and pathological findings were reviewed retrospectively. We divided the patients into 4 groups according to the operative findings. Group 1 included patients with MLs involving the intestinal walls. Group 2 included patients with pedicle-type MLs with no relationship to the mesenteric vessels. Group 3 patients presented with MLs located in the mesenteric boundaries near the mesenteric vessels. Group 4 patients had multicentric and diffusely infiltrated MLs., Result: The male-to-female ratio was 11:14, and the median age at diagnosis was 5years of age. The most common symptom was abdominal pain. The jejunal mesentery was the most frequently involved site in this study. Five patients showed the macrocystic type and 20 patients showed the mixed cystic type. With the exception of one patient with a large mixed cystic-type ML who underwent incomplete mass excision, 24 patients underwent complete mass excision. The group 1 patients (n=14) underwent mass excision performed with segmental resection of the bowel. The group 2 patients (n=3) only underwent mass excision surgery. The patients in group 3 (n=7) underwent mass excision with segmental resection of the intestine because ML excision altered the blood supply of the adjacent intestines. The group 4 patients (n=1) presented with MLs involving the entire mesentery and underwent incomplete excision., Conclusion: The relationships between MLs and the neighboring organs determine the surgical strategy, and the size and location of MLs affect the operative methods. The modified classification based on these findings can facilitate effective treatment planning., (Copyright © 2015 Elsevier Inc. All rights reserved.)

A rare case of a benign mesothelial cyst arising from the mesentery of the descending colon is presented. A 73 year old female presented with an asymptomatic mesenteric cyst on CT scan. Colonoscopy revealed extrinsic compression of the descending colon. Surgical resection of the cyst necessitated partial colon resection due to the adherent nature of the cyst to the colon and its mesentery. The details of the case are presented as well as a brief review of the relevant literature.

A 72-year-old man presented to the hospital with a cyst in the abdominal cavity as the main finding obtained by abdominal CT. The cyst measured 13.5×9 cm and was located near the proximal wall of the body of the stomach. Endoscopic ultrasonography revealed that, the size of the cyst was 8.6×8.8 cm and that most of it was anechoic. However, partially heterogeneous and hypoechoic solid portions and a septum were detected. This cystic lesion was separated from the stomach wall and pancreas. Surgical resection was performed. The final histopathological test results showed that the cystic mass originated from the mesentery of the transverse colon, and the cyst was diagnosed as mesenteric pseudocyst because the cystic wall was composed of granulation tissue without lining epithelial cells., (2014 BMJ Publishing Group Ltd.)

Mesenteric cysts are heterogeneous groups of lesions. Most of them are developmental cysts of lymphatic and enteric origin or cystic neoplasm such as mesothelioma or cystic teratoma. Urogenital cysts are a subcategory of developmental cysts of the mesentery. They are thought to arise from vestigial remnants of urogenital apparatus. These cysts may show evidence of mesonephric or metanephric differentiation. An 11 -year -old boy was presented with undescended testis. During preoperative work- up, an incidental cystic lesion was discovered which was attached to the ileum. Aspiration cytology of the cyst content revealed cuboidal to columnar cells; some of them were ciliated. Histologic examination showed a cyst with fibromuscular wall, lined by Mullerian type ciliated epithelium; so the diagnosis of urogenital mesenteric cyst of Mullerian type was made. Urogenital cysts are rare lesions, but they should be considered in differential diagnosis of any cystic lesion of the mesentery. Cytology could be a useful method for evaluation and revealing the nature of these cysts.

A rare case of symptomatic mesenteric cysts in a patient with Gorlin-Goltz syndrome, associated with various neoplasms, is presented. The patient, known with Gorlin-Goltz syndrome, consulted with increasingly severe abdominal pain and large abdominal cysts. At surgery, the cysts were excised and the postoperative course was uneventful. In conclusion, this case reminds clinicians to always maintain a wide differential diagnosis when dealing with patients known with Gorlin-Goltz syndrome.

History and Clinical Findings: A 17-year-old male sought medical attention for right lower abdominal pain. At clinical examination an abdominal mass in the right lower abdominal quadrant was accompanied by pain and tenderness in this very region. The febrile patient (temperature axillary: 37.5 °C, rectal: 38.6 °C) was in reduced general health., Investigations: Except for an elevated C-reactive protein (CRP: 14.3 mg/dl, normal: < 0.5) laboratory tests were inconspicuous. Abdominal ultrasound showed a hypoechogenic/anechogenic septated mass measuring 7.2 × 10.4 × 15 cm as well as small amounts of fluid. Abdominal computed tomography confirmed these findings. Radiographically there was evidence for appendicitis., Treatment and Course: Empiric antibiotic therapy was immediately commenced. Within 48 hours laparotomy was performed showing an abdominal mass which seemed to infiltrate the transverse colon, the ileocolic artery and the mesenteric root. No signs of appendicitis were found. A radical resection of the abdominal mass was performed meeting current standards of oncologic surgery. The postoperative course was favourable. Histopathological investigation showed a mesenteric cyst incorporating a hematoma and tissue with signs of chronic inflammation and granulation., Conclusion: Mesenteric cysts are rare pathologies occurring most frequently during childhood. They may become clinically overt in case of infection, haemorrhage or secondary intestinal obstruction. In the presented case presented hematoma formation and chronic inflammation had presumably induced peritonitis and clinical signs of appendicitis. Abdominal ultrasound and computed tomography facilitated diagnostic work-up. The patient thereby benefited from a scheduled laparotomy allowing a complete recovery., (© Georg Thieme Verlag KG Stuttgart · New York.)

This rare cystic lesion has an approximate incidence of 1 in 200,000. This patient complained of abdominal distension and was diagnosed with a giant mesenteric cyst measuring 26 cm in height using CT imaging. She underwent a successful ultrasound-guided drainage, which is not previously reported in the literature. This represents utilisation of an established procedure in a novel situation.

Meckel's diverticulum is the most common congenital abnormality of alimentary tract. The antimesenteric location is one of the cardinal attribiutes of this pathology. We report case which tries to verify this dogma. The literature regarding uncommon location of Meckel's diverticulum was also reviewed.

Mesenteric cysts, seen in all age groups, represent a rare cause of benign abdominal masses in children. We reviewed 21 patients with mesenteric/omental cysts. Gross and radiologic images, along with histologic sections, were reviewed to categorize the structures and determine the relationship to the mesentery and intestines. The cysts were composed of multi-loculated dilated channels at the serosal surface consistent with lymphangioma. Most treatment was simple excision, infrequently with intestinal resection. Nineteen patients did well after surgery. One patient developed short-gut syndrome after massive bowel resection, and one patient died immediately after birth due to massive fetal hydrops and heart failure.

Mesenteric desmoid tumour (MDT) is an uncommon neoplasm that typically presents as a solid soft-tissue mass on cross-sectional imaging. MDT manifesting as a fat-containing cystic mass on CT has not been described in the literature. We report such an unusual case with clinicopathological correlation.

Mesenteric cyst lymphangiomas (MCLs) are rare benign tumours of unknown aetiology seen mostly in children. Clinical presentation can be diverse ranging from incidental abdominal cysts to an acute abdomen. A 24-year-old previously fit and healthy young man presented with a 2-week history of cramping, central abdominal pain and vomiting requiring acute hospital admission. He was a diagnostic conundrum despite extensive preoperative investigations. Recurring symptoms required urgent surgical exploration, resection and histological confirmation with a successful outcome. We review the literature and present here this rare case in an adult of MCL that has the potential to grow, invade and develop major life-threatening complications.

Mesenteric cysts are rare intraabdominal tumors, which cause plain symptoms. Despite the modern imaging techniques, the correct preoperative diagnosis is difficult. The optimal treatment is surgical excision of the cysts with open surgery, laparoscopy, or even retroperitoneoscopy. Surgical excision needs to be considered in case of complaints, growing cyst, or suspicion of malignancy. Indications for urgent surgery treatment are: bleeding, volvulus, torquation or ileus. Most frequently, mesenterial cysts are diagnosed during the operation of an unknown palpable abdominal cystic resistance. We present a case of a 32-year-old female patient with a jejunal mesenteric cyst, treated by laparoscopic resection. Postoperative period was uneventful, and after an early discharge the patient's recovery was free of symptoms. Histopathological examination revealed a benign cyst. We conclude that laparoscopic resection of abdominal cysts with unknown origin is a safe operation and can be recommended.

Background: Mucinous cystic neoplasms arise in the ovary and various extra-ovarian sites. While their pathogenesis remains conjectural, their similarities suggest a common pathway of development. There have been rare reports involving the mesentery as a primary tumour site., Case Presentation: A cystic mass of uncertain origin was demonstrated radiologically in a 22 year old female with chronic abdominal pain. At laparotomy, the mass was fixed within the colonic mesentery. Histology demonstrated a benign mucinous cystadenoma., Methods and Results: We review the literature on mucinous cystic neoplasms of the mesentery and report on the pathogenesis, biologic behavior, diagnosis and treatment of similar extra-ovarian tumors. We propose an updated classification of mesenteric cysts and cystic tumors., Conclusion: Mucinous cystic neoplasms of the mesentery present almost exclusively in women and must be considered in the differential diagnosis of mesenteric tumors. Only full histological examination of a mucinous cystic neoplasm can exclude a borderline or malignant component. An updated classification of mesenteric cysts and cystic tumors is proposed.

Alpha-fetoprotein secreting (AFP) Sertoli-Leydig cell tumors of ovary (SLCT) are now identified as a distinct entity among the uncommon group of sex cord tumors of ovary. We report an unusual case of recurrent AFP secreting ovarian tumors and as ileocecal mesenteric cyst in a 25-year-old patient resulting in difficulty in initial diagnosis of AFP producing SLCT. Although six recurrent cases were described out of the 25 reported cases of AFP secreting SLCTs, this patient with an unusual presentation of recurrence is the second case in the literature to the best of our knowledge.

Mesenteric cystic lymphangioma is an uncommon benign abdominal mass. Two cases of mesenteric cystic lymphangioma are presented, both in combination with malrotation and intermittent volvulus. Both mesenteric cystic lymphangiomas were located near the duodenojejunal junction, the usual area of torsion in case of a volvulus. These findings suggest that mesenteric cystic lymphangioma could have evolved as a consequence of chronic intermittent volvulus. We hypothesize that in patients with malrotation and volvulus, mesenteric cystic lymphangioma may be regarded as an acquired anomaly.

Mesenteric cysts are rare intraabdominal benign cystic lesions. These lesions are most commonly located in the ileal mesentery, without any sex predilection. Mesenteric cysts may be totally asymptomatic and discovered incidentally during routine radiologic examinations. Chronic abdominal pain or acute abdomen may be accompanying to these lesions. Ultrasonography, computed tomography and magnetic resonance imaging are valuable in the diagnosis. Rarely, these lesions may be presented with rupture after trauma. We present a patient with a ruptured ileal mesenteric cyst due to a blunt abdominal trauma and diagnosed by emergency laparotomy.

A case of mesenteric fibrosis secondary to post-traumatic mesenteric hematoma, resulting in duodenal stenosis eight years after the traumatic event is presented. A 50 year-old man was hospitalized with nausea and vomiting. An intraabdominal cystic mass was seen in abdominal ultrasonography and CT. Duodenum was found to be obstructed due to extrinsic compression in upper endoscopy. At laparotomy there was an intramesenteric traumatic cyst and fibrosis around the duodenum resulting in duodenal obstruction. After the cyst was unroofed a Roux-en-Y duodenojejunostomy was performed. Both early and late (after 4 months) follow-up results were excellent.

Two rare cases of completely isolated duplication cysts are reported. A large but asymptomatic tubular cyst hanging from a narrow pedicle arising from the base of the terminal ileal mesentery was removed in a 6-day-old boy along with correction of associated malrotation. Multiple isolated duplication cysts located in the thorax and abdomen were excised in a 10-week-old infant. Both children remained asymptomatic after surgery.

Personal experience based on a clinical case of a young woman with acute abdominal pain referable to acute appendicitis is presented. The surgical procedure was performed through a Mc Burney incision and revealed the rupture of mesenteric cysts; removal of the cysts was carried out without intestinal resection. Post-operative course was uneventful and 2 years follow-up showed no recurrence. Mesenteric cysts are an uncommon pathology, mainly in adult ages. After an analysis of the incidence and etiology, the pathological features and types of clinical presentation are discussed. Diagnosis in asymptomatic cases is usually made in search of other diseases. Complications are rare: rupture, infection and intestinal obstruction. In such cases, the clinical presentation is usually attributable to the main causes of acute abdomen, unless ultrasonography or CT scan are performed. When mesenteric cyst is diagnosed, a laparoscopic approach should be performed, even if in emergency traditional surgery is justified. Total excision of the cyst is necessary to avoid recurrence and obtain a correct pathologic evaluation.

Mesenteric cystic tumors are very rare. They may simulate the ovarian cysts. We report a case of a 38 year-old woman with large cystic tumor suggesting ovarian cyst. The patient was operated on and we found that genital organs were normal. Besides there was a large cyst of small intestine mesentery with 10 liters of clear fluid. The cyst was removed. Histological material showed mucinous cystadenoma.

Mesenteric cysts are rarely thought of, may be difficult to diagnose, and are usually asymptomatic except when complicated. Intestinal obstruction is a rarely reported complication of these cysts. A case of mesenteric cyst that was causing obstruction of the large bowel is presented, along with a review of the literature.