Regulatory characteristics and promoter analysis of csiE, a stationary phase-inducible gene under the control of sigma S and the cAMP-CRP complex in Escherichia coli

The diagnosis of primary retroperitoneal masses is approached best by CT scan-guided transretroperitoneal core biopsy or by open biopsy. Excisional or wedge biopsy is the preferred method for undiagnosed lymphadenopathy. Resection without biopsy is indicated for large or enlarging nonfunctional primary adrenal masses.