Eosinophilic solid and cystic renal cell carcinoma with TSC2 mutation: a case report and literature review

Composite eosinophilic solid and cystic renal cell carcinoma and clear cell renal cell carcinoma: a rare case report and literature review

BACKGROUND

Eosinophilic solid and cystic renal cell carcinoma (ESC-RCC) is a novel subtype of renal cell carcinoma characterized by its relatively low incidence and indolent behavior. We report a rare case of ESC-RCC concurrent with clear cell renal cell carcinoma (ccRCC) in a single kidney.

CASE PRESENTATION

A 48-year-old male, was found to have a mixed echogenic mass in the left kidney during a physical examination. He has no history of hematuria and flank pain. An abdominal CT scan revealed a 3.0 * 1.9 * 2.5 cm3 mass with unclearly bordered at the lower pole of the left kidney. Abdominal MRI showed two nodules of different sizes in the left kidney, suggesting the possibility of a tumor. The patient underwent a subtotal nephrectomy, and the postoperative pathological results indicated ESC-RCC combined with ccRCC. The patient recovered well without tumor recurrence during the 12-month follow-up.

CONCLUSION

We reported a case of renal composite tumors, comprising the rare ESC-RCC and the more common ccRCC. Imaging combined with postoperative pathological examination is crucial for the definitive diagnosis of these rare tumors.

Eosinophilic Solid and Cystic Renal Cell Carcinoma-A Systematic Review and Meta-Analysis

Eosinophilic solid and cystic renal cell carcinoma (ESC-RCC) is a novel and uncommon type of renal cell carcinoma, which has been recently recognized and introduced as a distinct entity in the WHO 2022 kidney tumor classification. Previously known as "unclassified RCC", followed by "tuberous sclerosis complex (TSC)-associated RCC", ESC-RCC is now a distinct category of kidney tumor, with its own name, with specific clinical manifestations, and a unique morphological, immunohistochemical and molecular profile. Due to its recent introduction and the limited available data, the diagnosis of ESC-RCC is still a complex challenge, and it is probably frequently misdiagnosed. The secret of diagnosing this tumor lies in the pathologists' knowledge, and keeping it up to date through research, thereby limiting the use of outdated nomenclature. The aim of our case-based review is to provide a better understanding of this pathology and to enrich the literature with a new case report, which has some particularities compared to the existing cases.

A rare case of eosinophilic solid and cystic renal cell carcinoma in a 48-year-old woman: Case report and literature review

INTRODUCTION AND SIGNIFICANCE

This is (ESC RCC) a rare renal tumor that was thought to occur exclusively in female patients and almost exclusively in TSC patients. The tumor does not have distinctive clinical symptoms or radiological manifestations that are important for distinguishing it from other tumors or renal formations, but it has unique features and distinct histological characteristics that allow us to distinguish it from other tumors. Despite its slow growth, it sometimes metastasizes to other parts of the body. Surgical interventions are treated by examining tissue samples that show the characteristic features of the tumor.

CASE PRESENTATION

We present the case of a patient who complained of mild flank pain without other associated symptoms. She was successfully treated in our hospital and followed up for 8 months without any problems.

CLINICAL DISCUSSION

This tumor generally has slow growth and good prognosis and is often detected at an early stage. However, when confronted with this tumor, good surgical excision with a full body scan is necessary to rule out the presence of metastases, monitor the patient well, and act decisively despite the good warning of this tumor, as we have not yet achieved complete visualization of this formation. Neoplastic.

CONCLUSION

By studying the successive reports of this unique tumor, this manuscript will help document our case and review the literature on this tumor to try to understand this tumor formation in the hope of achieving the best medical care for these patients.