Objectives Early, accurate diagnosis is crucial for the prognosis of patients with soft tissue
sarcomas. To this end, standardization of imaging algorithms, technical requirements, and …

The complex anatomy of the retroperitoneum is reflected in the spectrum of neoplastic and
nonneoplastic conditions that can occur in the retroperitoneum and appear as soft-tissue …

Primary neoplasms that originate in the soft tissue of the retroperitoneum are rare, but they
are often malignant and can grow to a substantial size at clinical presentation. Although …

Primary retroperitoneal masses are a rare but important group of neoplasms. Cross-
sectional imaging has revolutionised the investigation of patients with retroperitoneal …

Hamartomas are tumours composed of mesenchymal tissues such as cartilage, fat,
connective tissue and smooth muscle and can be found in virtually any organ system. These …

The retrorectal–presacral space is located posterior to the mesorectum and anterior to the
sacrum, and can harbor a heterogeneous group of uncommon masses. Retrorectal …

Most pelvic tumors originate from the organs. Less commonly, tumors can arise from the
various anatomic pelvic compartments and are comprised of mesenchymal tissue: muscles …

Abstract Background Tailgut cysts (TGCs) are benign congenital abnormalities that usually
present with non‐specific symptoms, constituting a diagnostic dilemma for physicians. The …

Retroperitoneal tumors can pose a diagnostic and therapeutic challenge to gynecologists
because of their rarity, late presentation, and complex anatomical location in the …

Although most rectal masses are histologically characterized as adenocarcinomas, the
rectum and perirectal region can be affected by a wide variety of tumors and tumor-like …