Retroperitoneal Liposarcoma: The Giant Type

A Case of a Giant Liposarcoma at Binh Dan Hospital

Retroperitoneal liposarcomas (RLSs) are uncommon mesenchymal tumors that might present a diagnostic challenge due to their rarity and anatomical location. Despite grossly complete resections, they are commonly linked to a high recurrence rate, necessitating long-term or indefinite follow-up. This report discusses a 59-year-old male patient referred to the Gastrointestinal Department due to chronic abdominal distention, right-sided back pain, and a sizable abdominal mass. The diagnosis was an RLS, and the patient underwent en bloc resection of the mass.

Recurrent retroperitoneal liposarcoma with multiple surgeries: a case report

Retroperitoneal liposarcoma (RPLPS) is a rare malignant tumor that is typically treated with surgical resection. However, RPLPS often has a high rate of local recurrence, making it crucial to explore new treatment options. In this report, we present the case of a middle-aged woman who experienced seven recurrences and underwent seven surgeries following the initial resection. Currently, the patient's condition remains stable after the eighth surgery. Although there have been numerous reports of RPLPS cases both domestically and internationally, instances of repeated recurrence like this are exceptionally rare. Therefore, we have gathered the patient's case data and conducted a retrospective analysis, incorporating relevant literature, to enhance the understanding of this disease among clinical practitioners.

A giant liposarcoma originating from peripancreatic fat tissue with identification using 3D-CT angiography: a case report

BACKGROUND

Liposarcoma originating from peripancreatic fat tissue is extremely rare. This case report presents a surgical case of a giant liposarcoma originating from peripancreatic fat tissue with origin identification using 3-Dimensional Computed Tomography Angiography (3D-CTA).

CASE PRESENTATION

A 59-year-old female was referred to our hospital with a giant abdominal tumor. Computed tomography revealed a 34 cm tumor composed of fatty tissue, exerting pressure on the posterior aspect of the pancreas. Suspecting liposarcoma, we planned for surgery. At first, the tumor appeared to be intra-abdominal tumor, based on the identification of the tumor's feeding artery as a branch of the dorsal pancreatic artery using 3D-CTA, we concluded that the liposarcoma originated from the peripancreatic fat tissue and situated in the retroperitoneum. During surgery, we observed a well-capsulated, elastic, yellowish mass without infiltration into surrounding tissues. We carefully dissected the tumor from the greater omentum and transverse mesocolon while preserving the tumor capsule. We ligated the feeding artery at the border with the pancreatic parenchyma and successfully completed the excision of the tumor. The resected specimen weighted 2620 g and was pathologically diagnosed as a well-differentiated liposarcoma. There was no injury to the tumor's capsule, and the surgical margins were negative.

CONCLUSIONS

In this report, we present an extremely rare case of a liposarcoma originating in the peripancreatic fat tissue. The use of 3D-CTA was instrumental in identifying the primary site of this giant tumor, enabling us to guide the surgery and achieve complete resection successfully.

Giant myxoid retroperitoneal liposarcoma in a 41-year-old patient: A case report

INTRODUCTION

Retroperitoneal Liposarcomas (RL) are a rare form of malignant tumors, they encompass just 5 % ot these and mainly present in female adults between 50 and 60 years of age. They can be divided into 4 morphological subtypes: 1) well-differentiated, 2) undifferentiated, 3) myxoid, and 4) pleomorphic.

CASE PRESENTATION

41-year-old male who present to the outpatient consult of oncological surgery after being diagnosed via imaging with a giant retroperitoneal liposarcoma. The patient reported unsuccessful weight loss attempts and subsequently noticed an increase in abdominal size as well as the development of ulcers in the lower limbs. He underwent radical resection, which included a right nephrectomy, as the primary treatment.

DISCUSSION

Giant retroperitoneal liposarcomas are defined as those 30 cm in diameter or more or 20 kg or more in weight are considered "giants" and are extremely rare. The only treatment involves resection of the tumoration and those adjacent involved organs, and sometimes, uninvolved ones. Due to the high risk of recurrence, adjuvant therapy may be provided as well as imaging follow up.

CONCLUSION

RL are a complicated entity to manage. They tend to present high rates of recurrence due to the difficulty of performing a full resection without positive margins. These patients should be thoroughly studied before surgery and appropriate follow-up should be provided.