Cystic lesions of the retroperitoneum can be classified as either neoplastic or nonneoplastic.
Neoplastic lesions include cystic lymphangioma, mucinous cystadenoma, cystic teratoma …

Although uncommon, primary appendiceal neoplasms often result in clinical symptoms that
may lead to abdominal imaging. Acute appendicitis from luminal obstruction is the most …

Background. Radiologic tests to determine the size and location of cancer on peritoneal
surfaces are needed for patient management and for clinical research activity. Methods …

Neoplasms occur in 0–5 percent of appendices. Ultrasonography or computed tomography
is beneficial, but preoperative detection is rare. At operation, the diagnosis is considered in …

Mucinous neoplasms of the appendix are a heterogeneous group of neoplasms ranging
from simple mucoceles to complex pseudomyxoma peritonei. Considerable controversy …

Mucocele of the appendix, a cystic mass resulting from a dilated appendiceal lumen caused
by abnormal accumulation of mucus, is a rare entity that often is not considered when …

Objective. To evaluate the association of the onion skin sign as a sonographic marker for
appendiceal mucocele. Methods. The sonographic onion skin sign was considered specific …

Background: Mucocele of the appendix is a rare disease entity, but preoperative diagnosis is
very important. With the advent of ultrasonography (US) and computed tomography (CT), it …

Pseudomyxoma peritonei is an unusual malignancy arising from the goblet cells of the large
bowel or appendix. Its characteristic clinical features are low histologic grade of malignancy …

OBJECTIVE. The purpose of this study was to identify the CT features of mucocele of the
appendix coexisting with acute appendicitis and to determine whether this entity can be …