Epithelioid hemangioendothelioma of the greater omentum: report of a case

Case report: Laparoscopic treatment of gastro-omental hemangioma with hemorrhage: two cases reports and review of literature

Background

Spontaneous hemorrhage of gastro-omental hemangioma is a rare disease. The treatment strategy for this disease changes as it develops. In the acute stage, surgery is the first priority, among which laparoscopic treatment should be the most frequently considered option in large general hospitals. Due to the rarity of this disease, such cases have rarely been reported.

Case description

We present the first report of two eldely cases with gastro-omental hemangioma with hemorrhage by laparoscopic treatment. Both cases were initially admitted with upper abdominal pain, and abdominal computed tomography (CT) scan revealed masses alongside the greater curvature of the stomach. Laparoscopic surgery was conducted immediately in both patients. The two cases recovered well after surgery, and no obvious abnormalities were observed in the follow-up period.

Conclusion

Gastro-omental hemangioma rupture remains an uncommon cause of intraperitoneal hemorrhage. Timely diagnosis and surgery are paramount for treatment. Medical institutions with the correct technology and equipment should perform laparoscopic treatment to minimize surgical trauma and promote rapid recovery of patients with abdominal apoplexy.

Primary peritoneal hemangioendothelioma simulating an ovarian cyst: A case report and review of literature

BACKGROUND

Epithelioid hemangioendothelioma (EHE) is an extremely rare tumor with a prevalence of one in a million and a very heterogenous spectrum of disease that varies from an indolent to a metastasizing aggressive disease, with the liver, lung and bone being the primarily involved organs. Peritoneal forms of EHE are even rare, and only 12 cases have been reported to date in the literature.

CASE SUMMARY

A 66-year-old female came to our attention complaining low abdominal and perineal pain. Magnetic resonance imaging examination showed a 52 mm × 58 mm × 32 mm cystic mass with some smooth septa, simulating an ovarian cyst. Explorative laparoscopy demonstrated the presence of a peritoneal mass of augmented consistency connected with a sigmoid epiploic appendix in the right side of the Pouch of Douglas, that was surgically removed. Histological exa-mination revealed a primitive peritoneafl hemangioendothelioma. The patient easily recovered from surgery with no residual pain or discomfort. She is regularly attending a 3-years follow-up that is negative for local recurrence of disease or distant metastases.

CONCLUSION

Peritoneal form of EHE often simulates masses of other nature, as in our case. Given its unspecific clinical and radiological presentation, patients are often forced to a large series of tests and examinations before reaching a definitive diagnosis, that can only histologically made. The possibility of EHE should always be considered in case of unexplained chronic abdominal pain associated to a non-specific mass.

Capillary hemangioma arising from the lesser omentum in an adult: A case report

RATIONALE

Although capillary hemangiomas, common lesions involving the proliferation of small capillary vessels and a single layer of endothelial cells, can arise in any organ, they are rarely reported in the greater or lesser omentum. Here in, we report a case of capillary hemangioma arising from the lesser omentum in an adult with interesting diagnostic imaging findings, including changes in tumor size over time on computed tomography (CT), that was resected using laparoscopic surgery. To our knowledge, this is the first English report to describe a capillary hemangioma arising from the lesser omentum.

PATIENT CONCERNS

A 63-year-old Japanese man received hemodialysis for chronic renal failure due to diabetic nephropathy, and a small, gradually enlarging tissue mass was found near the lesser curvature of the stomach on plain CT performed annually, without any associated complaints. Diagnostic imaging revealed an 18 × 15-mm tumor with a homogenous, highly enhanced effect in the early phase that was attenuated but prolonged in the delayed phase. Magnetic resonance imaging showed a mass with low signal intensity on T1-weighted imaging and relatively high signal intensity on T2-weighted imaging.

DIAGNOSIS

The patient was diagnosed with capillary hemangioma arising from the lesser omentum according to the pathological and immunohistological findings.

INTERVENTIONS

The patient underwent laparoscopy for excision of the tumor from the lesser omentum.

OUTCOMES

At the 1 year follow-up, the patient had no recurrence of the tumor.

LESSONS

We describe the first case worldwide of capillary hemangioma that was a true vascular tumor arising from the lesser omentum. Although capillary hemangioma arising from the lesser omentum is extremely rare, it should be considered in the differential diagnosis of patients presenting with a highly enhanced lesser omental tumor, and laparoscopy can be safely applied for the excision of this tumor.

Epithelioid hemangioendothelioma of the thyroid: a case report

Background

Epithelioid hemangioendothelioma (EHE) of the thyroid is an extremely rare disease; only three cases have been reported in the English literature to date. Here, we describe a case involving a patient with thyroid EHE successfully treated with curative surgery.

Case presentation

A 74-year-old woman presented with a right thyroid mass. The nodule was approximately 2 cm in size and was diagnosed as an indeterminate lesion by fine needle aspiration cytology. She was treated with thyroid lobectomy. The histopathological and immunohistochemical findings indicated an EHE of the thyroid. At the latest follow-up, 3 years postoperatively, the patient showed no signs of recurrence.

Conclusion

There is currently no standard therapy for EHE; however, our case suggests that curative resection represents an effective treatment.

Primary mesenteric angiosarcoma in a child with associated lymphangiectasia: a case report

Angiosarcomas are rare tumors in children, usually occurring in soft tissue and liver. By contrast, angiosarcoma in adults usually occurs in the extremities in conjunction with lymphedema. Mesenteric angiosarcoma has only rarely been reported. When angiosarcomas arise in this location, they usually represent a 2nd malignancy following Hodgkin's lymphoma. We report a child who presented to the emergency room with an acute abdomen and underwent emergency surgery for a mesenteric angiosarcoma with associated lymphangiectasia of the bowel and mesentery. A brief review of the literature and the nomenclature of these unusual tumors are discussed.

Primary peritoneal epithelioid hemangioendothelioma

Epithelioid hemangioendothelioma is an uncommon malignant vascular tumor of intermediate grade that occurs in a variety of organs and soft tissues. Diagnosis of epithelioid hemangioendothelioma is often complicated by the rarity of the tumor, and because the tumor shares many morphologic features with other peritoneal neoplasms. This report presents 3 cases of epithelioid hemangioendotheliomas arising as primary tumors of the peritoneum and reviews 7 previously reported cases to establish the demographic, clinical, morphologic, immunohistochemical, and ultrastructural features of this neoplasm. These cases demonstrate that the light microscopic features are very similar to epithelioid hemangioendothelioma arising at more conventional sites, such as the liver, that immunohistochemical analysis provides a reliable approach for confirming or establishing the diagnosis, and that at least one endothelial marker (either CD31, CD34, or factor VIII) should be positive for a definitive diagnosis. This series identifies the characteristics of peritoneal epithelioid hemangioendothelioma that can be reliably used for diagnosis.