Primary Solid Tumors Of The Mesentery

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Primary malignant rhabdoid tumor of greater omentum in 10

Contrary to metastatic tumors of the omentum, primary tumors of the omentum are very rare. A 10-year-old girl presented with low abdominal pain. Imaging studies showed a multiseptated hemorrhagic tumor. The mass from the omentum was removed completely and confirmed as a malignant rhabdoid tumor. Despite aggressive chemotherapy, she died after 9

Mesenteric Neoplasms: CT Appearances of Primary and Secondary

Primary Mesenteric Neoplasms Primary tumors arising from the mesentery are rare. In their review of a large series of patients with mesenteric abnormalities seen at CT, Whit-ley et al (3) found 101 cases of mesenteric neo-plasms, and all but one were metastatic lesions. Most primary lesions are mesenchymal in origin, and the majority are

Malignant paraganglioma of the mesentery: a case report and

Malignant paraganglioma of the mesentery: a case report and review of literature Michael Chetrit1, Pierre Dubé1, Virginie Royal2, Guy Leblanc1 and Lucas Sideris1* Abstract Paragangliomas represent only 10% of chromaffin tissue tumors and those arising from the mesentery seem to be a rare occurrence.

Primary Pulmonary vs Pancreatic Metastasis

common solid tumors, providing analysis of clinically relevant exons of oncogenes and all exons of tumor suppressor genes in the 26 clinically relevant genes covered by the panel. - H&E stained section reviewed to determine % of tumor in the sample. - Study completed w/ Illumina MiSeq next-generation sequencing instrument.


very rare and most solid tumors arising in the mesentery are usually metastatic tumors [1,2]. Distant metastasis ovary and other solid organs. So, it may be a primary mesenteric carcinoid tu-

Mesenteric follicular lymphoma

sandwich sign, bulky lymphadenopathy in the mesentery encasing vessels and the bowel, is known to be suggestive of malignant tumors,2 its diagnostic performance has been unknown. Because mesenteric lymphoma may be indolent, a focus on patient complaints, such as awareness of mass as this case, is essential for early diagnosis. Among solid

Mesenteric extraovarian Sertoli-Leydig cell tumor without

Keywords: Mesentery, Sertoli-Leydig cell tumor, Heterotopic tumor, DICER1 Background Sertoli-Leydig cell tumors (SLCTs) are rare ovarian tumors that belong to the group of sex-cord stromal tumors, comprising less than 0.5% of ovarian neoplasms, and mainly occur in young adult women in their 20s [1]. The occurrence of primary sex-cord stromal

Primary primitive neuroectodermal tumor arising in the

cases of PNET arising in the mesentery and ileocecum in 59- and 22-year-old males and a 36-year-old female. Computed tomography revealed a solid mass in the lower abdomen, with areas of cystic changes. Microscopically, the tumors were composed of small round cells arranged in sheets and rosettes with scant cytoplasm, hyperchromatic nuclei and a

Solid Tumors of the Peritoneum, Omentum, and Mesentery in

Solid Tumors of the Peritoneum, Omentum, and Mesentery in Children: Radiologic-Pathologic Correlation1 Intraperitoneal solid tumors are far less common in children than in adults, and the histologic spectrum of neoplasms of the perito-neum and its specialized folds in young patients differs from that in older patients.

A giant solitary fibrous tumor of the mesentery: Case report

tumors [2]. Follow-up of 12 months after surgery showed no evidence of recurrence or distant metastasis is this case. CONCLUSION We report a case of a rare mesenteric SFT, probably one of the largest reported in the literature. Despite resemblance with other solid tumors, CT scan and MRI are the best available exams to guide toward a differential

Tumors of the Mesentery and Omentum 4

es from the mesentery or omentum rather than a solid abdominal organ, the differential diagnosis includes primary mesenteric/omental cyst,mesenteric teratoma, cystic mesothelioma, cystic spindle cell tumor (cystic leiomyoma/leiomyosarcoma), pseudomyxoma perito-nei, pancreatic pseudocyst, mycobacterium avium-

Occult Testicular Teratoma Presenting With Solid Mesenteric

processes can be detected as solid masses in the mesentery and omentum. Among neoplastic masses, primary tumors arising in the mesentery are relatively rare. Conversely, the mesentery is a frequent avenue of spread for malignant neoplasms.1 Tumors spread to the mesentery by 4 major routes: (1) direct extension, commonly

Leiomyosarcoma of ileal mesentery in a middle age female: a

these five tumors were reported to be originated from mesentery [3]. Most of the primary mesenteric lesions are benign, and differential diagnosis of the malignant disease includes GIST, leiomyosarcoma, malignant myo-fibroblastic tumor, solitary fibrous tumor, liposarcoma, and lymphoma [3, 6, 7]. Imaging plays a crucial role in the pre-operative

Pleomorphic leiomyosarcoma of colonic mesentery: an unusual

The mesentery presents a common site for the metastasis However, the primary tumour arising in mesentery is extremely rare, lymphomas being the most common followed by mesenchymal tumors.2 These malignancies include GIST, leiomyosarcomas, liposarcoma, fibrosarcoma, pleomorphic undifferentiated sarcomas and

Case Report Primary Mesenteric Smooth Muscle Tumor: An Entity

Primary solid tumors of the mesentery are usually of mes-enchymal nature [ , ]. Most commonly, they are smooth muscle tumors or GISTs [ ]. Fibromatosis (desmoid tumor), well-di erentiated liposarcoma, malignant brous histiocy-toma, and peripheral nerve sheath tumors also occur in the location[ , ].


the primary long incision the whole skin over thorax and abdomen is found to be edematous, a clear fluid oozing out from it. The abdominal cavity contains from two to three gallons of a yellowish, very turbid ascitic fluid. The right pleural cavity contains quite a large amount of 1 Harris and Herzog: Solid Tumors of the Mesentery, etc. Annals

Primary mesenteric carcinoid tumor: A rare entity

However, for tumors larger than 2 cm with regional mesentery metastasis and lymph node involvement, wide excision of the bowel and mesentery with lymph node dissection has been recommended because tumors larger than 2 cm are associated with 80-90% incidence of metastasis [7-9]. CONCLUSION. The primary mesenteric carcinoid tumor is a rare entity.

Malignant mixed mu¨llerian tumor of primary mesenteric origin

occurrence in the mesentery. When cases of peritoneal MMMT were reviewed, the disease was found to be associated with synchronous or metachronous gynecologic tumors of mu¨llerian duct origin (ie, ovarian tumors, primary serous carcinoma of the peritoneum, fallopian tube cancer, endometrial cancer, and adeno-

Mesenteric Fibromatosis of the Small Bowel Mesentery After

Most intraabdominal fibromatosis tumors arise in the mes-entery, particularly in the small bowel, and are the most common primary tumor of the mesentery.6 8The present report is a rare case of giant cell mesenteric fibromatosis tumor arising from the jejunojejunostomy anastomosis of the small bowel mesentery in a patient presenting with


Aug 25, 2017 PRIMARY PERITONEAL TUMORS Multicystic mesothelioma: Imaging features are non-specific Multicystic pelvic mass or masses with enhancing septa along peritoneal surfaces of uterus, bladder Ovary may be trapped Ddx: Lymphangiomas, mesenteric cysts, mucinous tumors, epidermoid and tail gut cysts- can rarely mimic ovarian neoplasms

Primary Mesenteric Neuroendocrine Tumor: A Case Report and

Nov 19, 2018 lymphangioma. Lymphoma (especially non-Hodgkin phenotype b) is the most common solid tumor mesenteric. Neuroendocrine tumors of the small intestine are rare, but the mesenteric lymph node metastases are present in 80-90% of cases. 8% of desmoid tumors are localized in the mesentery. Other mesentery tumors are rare.

C180-C189, C199, C209 Introduction

Multiple Primary Rules. Jump to Histology Coding Rules Tumors diagnosed 01/01/2018 and later: Use 2018 Solid Tumor Rules The original tumor diagnosed before 1/1/2018 and a subsequent tumor diagnosed 1/1/2018 or later. in the same primary site: Use the 2018 Solid Tumor Rules. Note 8: For those sites/histologies which have recognized

Solitary fibrous tumor of the The Author(s) 2020 mesentery: a

Solitary fibrous tumors (SFTs) are a group of rare spindle cell mesenchymal tumors mainly arising from the thoracic pleura. These are rare ubiquitous tumors that originate from the mesenchyme and are characterized by high fibrosity and hyper-vascularity.1 Although abdominal SFTs have been reported, involvement of the mesentery is rare.2 SFTs

Esetismertetés A bélfodor primer gastrointestinalis stromalis

Primary solid tumors of the mesentery are very rare. The authors found a bulky gastrointestinal stromal tumor (GIST) in the mesentery. The stomach and the intestines were tumor-free. Krutsay M, Chanis W. Primary gastrointestinal stromal tumor of the mesentery.Hungarian Oncology 50:345 348, 2006 Bevezetés


Desmoid tumors are the most common primary tumors of the mesentery and constitute about 3.5% of all fibrous tissue tumors3,4 The difference in sex distribution is statistically insignificant, but there is a slightly higher incidence of this tumor in women than in men.7 There are two forms: the sporadic or primary form and the secondary form. The

Primary small intestine mesenteric low-grade fibromyxoid

The mass was predominately solid (90%) and focally cys-tic (10%) with a 2.0×1.2×1.0cm calcified area (Fig. 2). Microscopic examination confirmed multinodular and infiltrative pattern (Fig. 3A, B). The majority of the tumor was consisted of regular, bland-appearing spindle cells in a fibrous and myxoid stroma (Fig. 3C, D). Thin


PRIMARY LEIOMYOSARCOMA OF THE OMENTUM 103 Fig. 3. Tumor consists of grayish-white, solid tumor and necrosis and hemorrhage are prominent, compared with case 1. Fig. 4. Tumor tissue is rich in cellular components, and spindle and round shaped

Primary Gastrointestinal Stromal Tumors in the Omentum and

On contrast-enhanced CT, primary gastrointestinal stromal tumors in the omentum and mesentery are usually well-defined, huge masses that contain large areas of low-attenuation necrosis and hemorrhage and that lack central gas. astrointestinal stromal tumors ac-count for most primary mesenchy-mal tumors of the gastrointestinal tract [1].


On the CT imaging, LMSs are reported as tumors showing heterogenous attenuation due to the enhancement of solid portions of the tumor along with non-enhancing areas of hemorrhage, degeneration and necrosis [10]. In a literature review done by Affas et al. [11] reports the median age at presentation is 55 years with a female pre-dominance (68%).

Primary Neuroendocrine Tumor (Carcinoid) of the Mesocolon 1

neuroendocrine tumors, carcinoid tumor, mesolon, mesentery, colon IMAJ 2001;3:288±289 revealed a solid tumor, 6x8 cm, between only two case reports of primary neu-roendocrine tumors of


body. Primary neuroendocrine tumor of the mesentery is very rare. More than 90% of gastrointestinal neuroendocrine tumors are located in the appendix, small intestine and rectum. We present a case of very rare primary neuroendocrine tumor of mesentery in a 54 years old female and discuss imaging feature and the histopathological data.

Myoepithelial carcinoma of the paracecal mesentery

the mesentery and abdominal wall (Figure 1), which were confirmed by biopsy on laparoscop-ic evaluation to be recurrent myoepithelial tumor. He was subsequently treated with 6 cycles of single agent doxorubicin with stable disease by response evaluation criteria in solid tumors for a total of 8 months. On treatment his symptoms improved.

A mesenteric solid tumor with unusual features in a young

As primary mesenteric tumors are rare, particularly in young patients, it is considered important that this type of unusual tumor be included in the differential diagnosis for mesenteric tumors. Introduction Primary tumors arising in the mesentery have been reported as rare tumors; however, small primary tumors are being identified

The Magnetic Resonance (MR) Imaging Features of Myxoid

that is located in the tumor. We report a case of primary myxoid liposarcoma of the mesentery which was difficult to differentiate from other solid mesenteric tumors with a myxoid component such as low grade fibromyxoid sarcoma, myxoid leiomyosarcoma or myxoma. Use of chemical shift magnetic resonance (MR) imaging

Primary solid tumors of the mesentery

PRIMARY SOLID TUMORS OF THE MESENTERY KAJTY YANNOPOULOS, M.D., AND ARTHUR PURDY STOUT, M.D. I Pi A RECENT PAPER ONE OF US (A.P.S.) WITH HIS co-workerssD investigated the nature and behavior of the primary solid tumors of the great oincntum. It was a great surprise to find that the kinds of tumors that developed there

European Journal of Radiology Open -

plastic lesions. Solid appearing neoplastic lesions usually include pan-creatic adenocarcinoma as the most common, followed by less common solid pancreatic neuroendocrine tumors, solid pseudopapillary tumors, pancreatoblastoma, and pancreatic metastasis. Primary pancreatic lymphoma (PPL) is an extremely rare solid neoplasm. It constitutes of

Liver metastasis secondary to primary mesenteric carcinoid

nal wall, extending to the mesentery in 40-80% of cases. Thus, solid neoplasms arising in the mesentery are usually metastatic lesions, while primary neoplastic involvement is extremely infrequent. Delayed diagnosis occurs frequently, typically 5-7 years from initial onset of symptoms, with 60-80% of patients diagnosed at an advanced stage (2).

Desmoid tumors of mesentery: Mesenteric fibromatosis

abdominal desmoid tumors. Key words: Desmoid tumors, mesentery, local infiltration, intestinal obstruction Anahttar kelimeler: Desmoid tümör, mezenter, lokal infiltras-yon, intestinal obstruksiyon Fibromatosis is the most common primary tumor of mesentery and accounts for approximately 8 % of all fibromatosis. Most cases are sporadic, but

Primary malignant hemangioendothelioma of the greater omentum

older literature on primary tumors of the great omentum, concluded that histologic de- scriptions of reported cases were too incom- plete for an intelligent classification of these tiimors. In Stout s own laboratory they were able to find 24 cases of primary solid tumors of the great omentum. Ten of these tumors