CT of renal metastatic disease. A pictorial essay

Renal metastasis from cervical carcinoma presenting as a renal cyst: A case report

In the present study, the case of a 51-year-old female with a metastatic tumor in the left kidney originating from cervical carcinoma, is reported. The patient had undergone chemoradiotherapy for stage IIB squamous-cell carcinoma of the uterine cervix 3 years earlier. Computed tomography (CT) identified low-density left renal nodules, which were diagnosed post-operatively as renal cysts during the follow-up conducted 2 years later. The next year, the patient was admitted to the Hunan Provincial Tumor Hospital (The Affiliated Tumor Hospital of Xiangya Medical College, Central South University, Changsha, Hunan, China) with a fever of unknown origin, left-sided flank pain and hematuria. CT examination detected irregular low-density nodules in the left kidney and heterogeneous enhancement on enhanced CT. Subsequently, the patient was subjected to a nephrectomy. Post-surgical analysis of subsequent biopsies indicated kidney tumor metastasis originating from cervical carcinoma. Renal metastases are rare in patients with cervical carcinoma. The present study reported a case of renal metastasis originating from cervical carcinoma and also reviewed previous case reports on patients presenting with this unusual type of cancer.

Renal pseudotumors due to fat necrosis in acute pancreatitis

Retroperitoneal fat necrosis is a well-known complication of acute pancreatitis. We describe an unusual case of fat necrosis presenting as multiple, bilateral renal pseudotumors in a patient with acute pancreatitis. The imaging findings on CT and MR are discussed.

Renal metastasis from squamous cell carcinoma of the lung

Symptomatic renal metastases from primary malignancy elsewhere in the body is an uncommon feature in disseminated cancer. Postmortem diagnosis is more frequent. A case is reported here of a patient with renal metastasis from lung carcinoma who presented with haematuria.

Computed tomography of renal metastases

Since the advent of CT, secondary neoplastic lesions of the kidneys have been detected with increasing frequency. After reviewing a large series of cases of renal metastases, we have been able to classify the CT findings into seven major categories that are discussed and illustrated in this article. The differential diagnoses between metastatic disease of the kidneys and other lesions such as renal infarctions, renal lymphoma, and primary malignancies are also considered.