Metastatic clear cell sarcoma of the pancreas: From diagnosis to treatment

Abstract

This article presents a comprehensive case report on an uncommon instance of metastatic clear cell sarcoma (CCS) originating from the pancreas. The high mortality rate of pancreatic carcinoma underscores the importance of precise diagnosis and early detection. The authors report a novel case of CCS with pancreatic metastasis, detailing successful surgical intervention through distal pancreatectomy and splenectomy, resulting in favourable outcomes. This study highlights the standard role of surgery in treating advanced CCS and emphasizes preoperative imaging and thorough patient history assessment. This article also underscores the necessity for long-term surveillance due to the potential for recurrence or metastasis. Despite the favourable recovery postsurgery, the absence of subsequent follow-up evaluation prompts consideration of the need for extended monitoring. This article raises questions about the nature of the pancreatic lesion and suggests the possibility of a primary lesion. Further evidence is crucial to establish the correlation between the features related to the development of the patient's primary and metastatic tumours. In conclusion, this study offers valuable insights into metastatic CCS of the pancreas, highlighting the importance of regular postoperative follow-up for improved outcomes through early detection and intervention.

Key Words: Editorial; Clear cell sarcoma; Case report; Metastasis; Pancreatic cancers

Core Tip: This article presents a unique case of metastatic clear cell sarcoma (CCS) originating from the pancreas, emphasizing the rarity of secondary clear cell carcinomas in this organ. Successful surgical intervention, including distal pancreatectomy and splenectomy, resulted in favorable outcomes. The study underscores the standard role of surgery in treating advanced CCS, highlights the importance of preoperative imaging, and advocates for thorough long-term surveillance due to the potential for recurrence. The article raises questions about the nature of the pancreatic lesion, suggesting the need for additional evidence to establish its primary or metastatic origin.

INTRODUCTION

This case report includes a comprehensive account of the clinical manifestations and treatment of an uncommon case of metastatic clear cell sarcoma (CCS) originating from the pancreas[1]. Most pancreatic cancers are ductal adenocarcinomas, and secondary pancreatic clear cell carcinomas, characterized predominantly by transparent tumour cells, are exceedingly rare. Furthermore, pancreatic carcinoma poses a high mortality risk, as the malignancy typically remains asymptomatic until it reaches an advanced stage. Therefore, precise diagnosis and early detection are imperative[2]. The authors report, for the first time, a case of CCS with pancreatic metastasis that exhibited favourable treatment outcomes following surgical intervention. Consequently, this discovery and diagnosis of this case provide valuable insights into the characteristics and therapeutic approaches associated with this disease, serving as a reference point for future treatment decision making.

TREATMENT AND PROGNOSIS OF METASTATIC CLEAR SARCOMA OF THE PANCREAS

Throughout the treatment, the patient underwent surgical interventions, including distal pancreatectomy and splenectomy. With surgery, complete tumour resection with negative margins was successfully achieved, resulting in favourable postoperative recovery at six months. This highlights that surgery should remain the standard method for treating advanced CCS, emphasizing the crucial role of preoperative imaging evaluation and comprehensive patient history assessment.

It is worth noting that despite the patient's favourable recovery following the initial surgery, no subsequent follow-up evaluation was conducted, emphasizing the ongoing necessity for long-term surveillance after surgical intervention for CCS, given its high propensity for recurrence or metastasis. However, the article lacks information about the location and surgical method of the patient's initial surgery, and it is hoped that future case reports will provide more comprehensive details.

MULTIPLE PRIMARY MALIGNANCIES

Certain aspects of the article warrant profound contemplation. Insufficient evidence exists to definitively determine whether the pancreatic lesion is metastatic or primary. Previous reports have documented cases of primary CCS occurring in the pancreas[3,4]. The presence of other alterations in the biliopancreatic region often leads to misdiagnosis of this rare histologic type in patients with a history of tumours. A similar case was documented in a previous study. This previous study reported a specific case of a patient with extrahepatic cholangiocarcinoma associated with a nonfunctioning, well-differentiated neuroendocrine carcinoma of the head of the pancreas with low-grade malignancy[5]. Particularly in the case of an uncommon site of metastatic lesion, a second primary tumour should be considered in the differential diagnosis[6]. Multiple primary malignancies (MPMs) are becoming more common. MPMs occur when there is more than one synchronous or metachronous cancer in the same individual. The MPMs should always maintain a vigilant attitude in clinical diagnosis. Therefore, it might be plausible to attribute the patient's current onset to a novel primary lesion in this case. Additional evidence is needed to substantiate the correlation between the patient's present onset and their initial onset. Moreover, it is recommended that doctors focus on discussing and analysing early disease diagnosis and treatment experiences. The following questions should be considered: Why does CCS primarily target the pancreas? What are the imaging characteristics of clinical cases of pancreatic metastasis from CCS?

CONCLUSION

In conclusion, this case report provides crucial insights into metastatic CCS of the pancreas and underscores the significance of regular postoperative follow-up. Although CCS is highly aggressive, favourable treatment outcomes can still be achieved through prompt detection and intervention.