Fewer than 20 cases of adventitial cystic disease of the vein have been reported in the worldwide literature. This small number of reported cases may be due not only to the disease's low incidence, but also to the difficulty in making the proper diagnosis. Many techniques have been used to investigate this disease, but venography has been the traditional diagnostic tool. In this report we present a case of adventitial cystic disease that was well demonstrated by CT venography.
Aged ; Cysts/pathology/*radiography ; Femoral Vein/pathology/*radiography ; Humans ; Male ; Peripheral Vascular Diseases/pathology/*radiography ; *Tomography, X-Ray Computed

We experienced a case of a tracheoesophageal cyst in the posterior mediastinum of a three-year-old girl, who complained of cough and fever. We confirmed this case by computerized tomography and pathologic examination after surgical resection. A brief review of the literature is presented.
Case Report ; Child, Preschool ; Cysts/*pathology/radiography/surgery ; Esophageal Cyst/*pathology/radiography/surgery ; Female ; Human ; Mediastinal Diseases/*pathology/radiography ; Trachea/*pathology/radiography/surgery

We experienced a case of a tracheoesophageal cyst in the posterior mediastinum of a three-year-old girl, who complained of cough and fever. We confirmed this case by computerized tomography and pathologic examination after surgical resection. A brief review of the literature is presented.
Case Report ; Child, Preschool ; Cysts/*pathology/radiography/surgery ; Esophageal Cyst/*pathology/radiography/surgery ; Female ; Human ; Mediastinal Diseases/*pathology/radiography ; Trachea/*pathology/radiography/surgery

CT and MRI are utilized to differentiate between different types of masses and to determine the extent of lesions involving the lacrimal gland and the fossa. Although many diseases that affect the lacrimal gland and fossa are specifically diagnosed by imaging, it is frequently very difficult to differentiate each specific disease on the basis of image characteristics alone due to intrinsic similarities. In lacrimal gland epithelial tumors, benign pleomorphic adenomas are seen most commonly with a well defined benign appearance, and a malignant adenoid cystic carcinoma is seen with a typical invasive malignant appearance. However, a malignant myoepithelial carcinoma is seen with a benign looking appearance. Lymphomatous lesions of the lacrimal gland include a broad spectrum ranging from reactive hyperplasia to malignant lymphoma. These lesions can be very difficult to differentiate both radiologically and pathologically. Generally, lymphomas tend to occur in older patients. The developmental cystic lesions found in the lacrimal fossa such as dermoid and epidermoid cysts can be diagnosed when the cyst involves the superior temporal quadrant of the orbit and manifests as a non-enhancing cystic mass and, in case of a lipoma, it is diagnosed as a total fatty mass. However, masses of granulocytic sarcoma and xanthogranuloma, as well as vascular masses, such as a hemangiopericytoma, are difficult to diagnose correctly on the basis of preoperative imaging findings alone. A careful clinical evaluation and moreover, a pathologic verification, are needed. In this pictorial review, the various imaging spectrums of pathologic masses involving the lacrimal gland and fossa are presented, along with appropriate anatomy and pathology reviews.
Carcinoma, Squamous Cell/radiography ; Conjunctival Neoplasms/radiography ; Cysts/radiography ; Eye Neoplasms/*radiography ; Hemangiopericytoma/radiography ; Humans ; Lacrimal Apparatus/*pathology ; Lacrimal Apparatus Diseases/radiography ; Lipoma/radiography ; Lymphoma/radiography ; Neoplasms, Glandular and Epithelial/radiography ; Neurofibroma/radiography ; Sarcoma, Myeloid/radiography

We report a case of huge pulmonary chondroid hamartoma with multilocular cysts in a 38-yr-old male patient. The lobectomy specimen of the left lower lobe showed a large multilocular cystic mass, 11.5 x 10 cm in size. The mass had thin-walled, variable-sized cysts and areas of solid cartilaginous small nodules in the interstitium, which occupied the superior segment and the upper portion of the basal segment. There was no connection with bronchus or vessel. Microscopically, the cysts and cleft-like spaces were lined by ciliated columnar epithelium and the solid components were composed of cartilage, myxohyalinized connective tissue, and adipose tissue. Also seen were foci of calcification within the sclerotic stroma.
Adult ; Cysts/*pathology ; Hamartoma/*pathology ; Humans ; Lung/radiography ; Lung Diseases/*pathology ; Male ; Tomography, X-Ray Computed

An unusual odontogenic cyst, which was originally believed to be a clinical dentigerous cyst associated with an impacted mandibular third molar, was found histologically to demonstrate the characteristics of a glandular odontogenic cyst with para- and orthokeratinization. These histologic diversities were interpreted as a reflection of the pluripotentiality of the epithelial remnants of the mandibular third molars or dentigerous cyst epithelium. It is possible that it has the capacity to induce the formation of cysts in both squamous and glandular epithelium.
Tomography, X-Ray Computed ; Odontogenic Cysts/*pathology/radiography/surgery ; Mandibular Diseases/*pathology/radiography/surgery ; Mandible/radiography ; Humans ; Female ; Epithelium/pathology ; Aged

Duplication is a rare congenital abnormality and may occur in any region of the gastrointestinal tract. A 19-year-old woman was admitted due to lower abdominal pain. Abdomino-pelvic CT scan showed a cystic mass interpreted as mesenteric cyst or duplication cyst. On the operation finding, it seemed to be arised from mesentery but attached to the ileum. Microscopically, the cystic wall was lined by non-keratinizing squamous, ciliated pseudostratified columnar epithelium, and ectopic gastric mucosa with two distinct muscular layers and a serosa. We report the first case of ileal duplication cyst lined by squamous and ciliated columnar epithelium in Korea.
Cilia/pathology ; Cysts/*congenital/pathology/radiography ; Epithelium/pathology ; Female ; Humans ; Ileal Diseases/*diagnosis/pathology/radiography ; Ileum/*abnormalities/pathology ; Tomography, X-Ray Computed ; Young Adult

OBJECTIVE: We wanted to clarify the relationship between the visibility of air cysts on CT images, the CT slice thickness and the size of the air cysts, with contact radiographs as the gold standard, for the accurate evaluation of honeycomb cysts. MATERIALS AND METHODS: An inflated and fixed autopsied lung having idiopathic interstitial pneumonia was evaluated. The corresponding air cysts were identified on the contact radiographs of a 0.5 mm-thick-section specimen and also on the CT images of three different kinds of section thickness: 0.5, 1.0 and 2.5 mm. The maximal diameters of the air cysts were measured under a stereomicroscope. RESULTS: A total of 341 air cysts were identified on the contact radiograph, and they were then evaluated. Sixty-six percent of air cysts 1 to 2 mm in diameter were detected by 0.5 mm slice thickness CT, while only 34% and 8% were detected by 1.0 and 2.5 mm slice thickness CT, respectively. Only 28% and 22% of air cysts less than 1 mm in diameter were detected by 0.5 and 1.0 mm slice thickness CT, respectively. CT with a 2.5 mm slice thickness could not demonstrate air cysts less than 1 mm in diameter. CONCLUSION: The CT detection rate of honeycombing is significantly influenced both by the slice thickness and the size of the air cysts.
Aged ; Aged, 80 and over ; Cadaver ; Cysts/*radiography ; Female ; Humans ; Lung Diseases/pathology/*radiography ; Tissue Fixation/methods ; *Tomography, X-Ray Computed

Adult ; Bone Cysts, Aneurysmal ; complications ; diagnostic imaging ; pathology ; Bone Neoplasms ; etiology ; pathology ; Cell Transformation, Neoplastic ; pathology ; Humans ; Male ; Radiography

Neurocutaneous melanosis (NCM) is a rare congenital disease that is characterized by the presence of large or multiple congenital melanocytic nevi and melanotic lesions of the central nervous system. We report here on the CT and MR imaging findings of an unusual case of NCM that was associated with intraventricular dermoid and Dandy-Walker malformation.
Tomography, X-Ray Computed ; Neurocutaneous Syndromes/*epidemiology/radiography ; Melanosis/*epidemiology/radiography ; Male ; Magnetic Resonance Imaging ; Humans ; Dermoid Cyst/*epidemiology/radiography ; Dandy-Walker Syndrome/*epidemiology ; Comorbidity ; Cerebral Ventricle Neoplasms/*epidemiology/radiography ; Arachnoid Cysts/epidemiology/pathology ; Adult