Problem statement: Elastography is developed as a quantitative approach to imaging linear elastic properties of tissues to detect suspicious tumors. We propose an automatic feature extraction method in ultrasound elastography and echography for characterization of breast lesions. Approach: The proposed algorithm was tested on 40 pairs of biopsy proven ultrasound elastography and echography imag...

OBJECTIVE To determine the effects of respiration on the size of lung cysts by comparing inspiratory and expiratory high-resolution CT (HRCT) scans. MATERIALS AND METHODS The authors evaluated the size of cystic lesions, as seen on paired inspiratory and expiratory HRCT scans, in 54 patients with Langerhans cell histiocytosis (n = 3), pulmonary lymphangiomyomatosis (n = 4), confluent centrilo...

Owing to multiplanar imaging capabilities and excellent tissue characterization, MRI can facilitate definitive diagnosis of benign conditions of the female pelvis. The purpose of this chapter is to review the spectrum of common benign conditions of the female pelvis and to illustrate the MRI features of these conditions, with an emphasis on the key imaging characteristics to suggest accurate di...

Cystic lesions of the pancreas are increasingly being recognized due to the widespread use of cross-sectional imaging. The initial evaluation of a pancreatic cyst should be directed toward exclusion of a pseudocyst. Patients with pseudocysts generally have a history of acute or chronic pancreatitis, whereas those with cystic tumors most often lack such a history. Several types of cystic lesions...

Cystic and cavitary lung lesions constitute a spectrum of pulmonary diseases diagnosed in both children and adults. Cysts and cavities are commonly encountered abnormalies on chest radiography and chest computed tomography. High-resolution computed tomography (HRCT) of the chest frequently helps define morphologic features that may serve as important clues regarding the nature of cystic and cav...

We report 12 cases of renal cystic lesions that could not be diagnosed preoperatively. Sonography, computed tomography (CT), magnetic resonance (MR) imaging, and angiography were performed in all cases. Angiography was not helpful in evaluating cystic lesions, because all cystic lesions were hypovascular or avascular within the cystic mass. CT was useful in depicting the fine structural abnorma...

• Objective: To review the diagnosis and management of pancreatic cystic lesions. • Methods: Narrative review of the literature. • Results: Pancreatic cystic lesions are clinically relevant as some are precursor lesions to pancreatic adenocarcinoma. Mucinous cystic neoplasms and intraductal papillary mucinous neoplasms are 2 commonly encountered pre-cancerous pancreatic cysts. Many cysts are id...

CONTEXT Cystic nephroma is a rare cystic tumor, which only recently has been recognized as an exclusively adult lesion. Mixed epithelial and stromal tumor of the kidney is also a rare, recently recognized, biphasic tumor composed of tubular and cystic elements embedded in grossly recognizable spindle cell stroma. The histogenesis of both lesions is unclear. OBJECTIVES To compare clinical phen...

(BGHs) are uncommon duodenal lesions, and account for approximately 5% of all duodenal masses (1). BGHs contain cysts on rare occasions, and only a very small number of cases of cystic BGH with accompanying computed tomography (CT) or magnetic resonance imaging (MRI) documentation have been reported (2-4). Imaging diagnosis of BGHs is usually a challenge, due to their nonspecific appearance. Th...

AIM To determine the presence of various periapical pathologies and their association with the presence and extent of internal apical inflammatory root resorption in human teeth. METHODOLOGY A total of 75 root apices from extracted teeth with periapical lesions were examined. Semi-serial sections of soft tissue lesions were stained with HE. The lesions were classified as non-cystic or cystic,...