Retroperitoneal Gastrointestinal Type Schwannoma Presenting as a Renal Mass

Giant renal schwannoma with obvious hemorrhage and cystic degeneration: a case report and literature review

BACKGROUND

Renal schwannomas are very rare and are usually benign. Its clinical symptoms and imaging features are nonspecific, and the diagnosis is usually confirmed by pathology after surgical resection.

CASE PRESENTATION

A 46-year-old Chinese female was admitted to the hospital with right flank pain that had persisted for the six months prior to admission. This pain had worsened for 10 days before admission, and dyspnea occurred when she was supine and agitated. A right abdominal mass could be palpated on physical examination. Computed tomography and magnetic resonance imaging examinations revealed a large, nonenhanced, cystic and solid mass in the right kidney. The patient received radical nephrectomy for the right kidney. The diagnosis of schwannoma was confirmed by pathological examination.

CONCLUSIONS

We report a case of a large renal schwannoma with obvious hemorrhage and cystic degeneration, which can be used as a reference for further study.

A case of retroperitoneal tumor – clinical and therapeutic considerations

Introduction: The aim of this paper is to present a case of rare retroperitoneal tumor.

Material and Methods. A 72 year old man presented with six month history of abdominal girth, lumbar pain and occasional episodes of constipation was admitted in our clinic. A computed tomographic abdominal scan revealed a retroperitoneal solid mass.

Surgical exploration performed later displayed solid and well delimited mass throughout retroperitoneal space followed by excision of lesion and multiple drainages. Microscopic pathological examination was benign nerve sheath tumor.

Conclusion. These tumors are characteristically firm, smooth, and asymptomatic. They range in size from 1-2 mm to over 20 cm. Awareness of this indolent and rare condition is an important prerequisite for early diagnosis and appropriate treatment. Surgical excision can usually be accomplished by enucleating of the tumor without damage to the adjacent nerve.