Primary Retroperitoneal Tumors

Diagnosis of Retroperitoneal Tumors

“…In general, the cysts are composed of a fibrous tissue wall lined with a flattened epithelium, and are frequently diagnosed preoperatively as being of ovarian origin. They may be single or multiple, and they are subject to infection, which may call attention to the presence of the mass (3). Palumbo et al (5) found teratomas twice as frequently on the left as on the right side.…”

“…Donnelly (1) believes that fibromas and leiomyomas, like lipomas, tend to recur because the surgeon overlooked a small tumor which later grew and was considered a recurrence, or else the pathologist did not find the malignant element which existed in the original specimen. Newman and Pinck (3) report that fibromas may occur singly, in clusters, or as a series of unconnected growths. These tumors also frequently recur in sarcomatous form.…”

“…Of the expressly malignant neoplasms, the lymphosarcoma and fibrosarcoma are the most common (3). They grow rapidly and progressively and are productive of pain, because the growth fuses with adjacent structures, resulting in tension on the nerves of the tissue invaded.…”

“…The retroperitoneal space lies between the peritoneum and the posterior parietal wall of the abdominal cavity (3). It is divided into lumbar and iliac fossae and extends upward to the twelfth rib, and downward to the base of the sacrum and the iliac crest.…”

Primary Epithelial Neuroendocrine Tumors of the Retroperitoneum

“…Thirteen series have reported a total of 699 cases of primary retroperitoneal tumors from 1946 to 2010. [15][16][17][18][19][20][21][22][23][24][25][26] The majority of these tumors originated from mesothelial and connective tissues of the retroperitoneal space. Approximately 82% of these tumors were malignant.…”