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At least 253 records · Page 14Linked to original sources

PubMed1990

Differential diagnosis between cyst and tumor. Dentigerous cyst and ameloblastoma containing teeth.

A study was conducted on 21 cases of ameloblastoma (a type of tumor containing an embedded tooth) and 87 cases of dentigerous cyst. The former cases were selected from among those which had been diagnosed histopathologically. Using radiographs of these lesions, the following parameters were measured: 1) the distance between the cement-enamel junction of the embedded tooth and its attachment to the cystic wall; 2) the area of the radiolucent image (similar to the area with a cystic appearance). From measurements of the former parameter, it appeared that the embedded tooth extends more toward the root apex in ameloblastoma than in dentigerous cyst, whereas the latter parameter indicated that the radiolucent area varies in size slightly in ameloblastoma, but tends to be smaller in dentigerous cyst. Moreover, with regard to clustering between ameloblastoma and dentigerous cyst, no definite tendency was detected on distance, whereas only ameloblastoma without dentigerous cyst was seen above 20 cm2 of area.

Adolescent↗

PubMed1996

Simple bone cysts treated by multiple drill-holes. 23 cysts followed 2-10 years.

We treated 23 simple bone cysts by the multiple drill-hole method and reviewed them a mean of 5 (2-10) years later. 11 cysts were located in the humerus, 9 in the femur, 2 in the tibia, and 1 in the pubis. The cysts recurred in 15 cases after the initial operation. 12 recurrent cysts were treated with reoperations. At the follow-up, good bone formation with no sign of recurrence was seen in 15 cases. A residual cyst was found in 8 cases, but further treatment was not considered necessary.

Adolescent↗

PubMed2000

Magnetic resonance appearance of multiple intracranial epidermoid cysts: intrathecal seeding of the cysts? Case report.

A 44-year-old man presented to the hospital with multiple intracranial epidermoid cysts. The clinical manifestations of his disease included chronic headaches and one seizurelike episode. Findings determined by magnetic resonance (MR) imaging, surgery, and histological analysis indicated intrathecal and intraventricular seeding of the cysts. Spontaneous (nontraumatic) seeding of multiple daughter cysts from intracranial epidermoid cysts is still very rare and their multiple appearances on MR imaging should be distinguished from the simple scattering of oily contents due to cyst rupture.

Adult↗

PubMedDate not supplied

Inferior head resection of the pancreas and cyst resection for choledochal cyst with chronic calcifying pancreatitis.

We report inferior head resection of the pancreas and cyst resection for congenital choledochal cyst with an anomalous arrangement of pancreaticobiliary duct and chronic calcifying pancreatitis. A 42-year-old man was admitted to the National Cancer Center Hospital East complaining of back pain. Contrast-enhanced computed tomography showed marked dilatation of the bile duct and multiple pancreatic stones in the main pancreatic duct. Endoscopic retrograde cholangiopancreatography demonstrated pancreatic stones in the dilated main pancreatic duct. The patient underwent cyst excision, inferior head resection of the pancreas, hepaticojejunostomy and lateral pancreaticojejunostomy. The postoperative course was uneventful. This procedure relieved the back pain. Choledochal cyst with anomalous arrangement of the pancreaticobiliary duct is frequently associated with acute pancreatitis. Inferior head resection of the pancreas removed the common channel which could be the cause of relapsing pancreatitis. Thus, inferior head resection can play a role in the management of choledochal cyst with chronic pancreatitis.

Adult↗

PubMed1990

Calcifying odontogenic cyst presenting as a lateral periodontal cyst--a case report.

We report a case of the calcifying odontogenic cyst occurring on the left anterior mandible of a 41-year-old male with clinical and radiographic features which made it initially to be a lateral periodontal cyst. This unusual presentation of a calcifying odontogenic cyst is discussed and its significance for the clinician is reviewed. A calcifying odontogenic cyst may present some problems for the differential diagnosis both clinically and histopathologically. The differential diagnosis of a lesion occurring in a lateral periodontal location should include the calcifying odontogenic cyst.

Adult↗

PubMed1989

[Two cases of adrenal cysts--the meaning of imaging in diagnosing adrenal cysts].

Two cases of adrenal cysts are reported. The first case is of a left adrenal cyst in a 19-year-old woman and was incidentally discovered by computed tomography (CT). Its margin was clear, its contents was homogeneous and its signal indicated water contents on magnetic resonance imaging (MRI). It was punctured and is now followed up by CT. The second case is of a left adrenal cyst in a 62-year-old woman, which also happened to be discovered by CT. Its contents was heterogeneous by MRI. It was removed and proved to be a lymphangiomatous cyst. The conclusion is that MRI will be useful in the differential diagnosis of adrenal cysts.

Adrenal Gland Diseases↗

PubMed1986

[A case of infected urachal cyst--a review of Japanese case reports of urachal cyst].

A 24-year-old female with infected urachal cyst is reported. She was admitted to the hospital with complaints of a lower abdominal mass, abdominal pain and cystitis symptom. Brownish pus discharges from her umbilicus were recognized by manual compression of the lower abdominal mass. Cystoscopy revealed a small orifice at the dome of the bladder, and pus discharges from this orifice. A pooling of contrast medium (8 X 2.5 cm) under the umbilicus was detected by a fistelography from the umbilicus, and a low density mass was detected under the abdominal wall between the umbilicus and the dome of bladder on a CT scan. So she was diagnosed as an infected urachal cyst and operated on. The urachal cyst which was adhered to the peritoneum had penetrated both the umbilicus and bladder at the time of operation. Complete removal of the urachal cyst with partial cystectomy was done. We also reviewed the Japanese case reports of urachal cyst.

Adult↗

PubMed1993

[Three cases of cystic testicular disease: simple cyst of the testis, cyst of the tunica alubuginea and mature cystic teratoma].

We experienced three cases of cystic testicular disease including simple cyst of the testis, cyst of the tunica alubuginea and mature cystic teratoma. Cystic testicular diseases have been considered rare, but increasing usage of ultrasound in the diagnosis of scrotal diseases has made them more common. Ultrasonography seemed to be useful to distinguish nonneoplastic testicular cysts (simple cyst of the testis, cyst of the tunica alubuginea) from cystic lesions of solid testicular tumors.

Adult↗

PubMed2005

Giant renal hydatid cyst resembling a simple cyst: an intraoperative diagnosis.

An interesting case of a giant renal hydatid cyst is presented. The big cystic mass detected at ultrasonography (US) and computerized tomography (CT) in a ten-year-old girl looked like a simple cyst. No germinative membrane or any other radiological sign of a hydatid cyst was present. The operation was planned for a simple cyst; but was altered, after an intraoperative diagnostic needle sampling brought out the characteristic fluid of hydatid cyst. We came to the conclusion that hydatid cystic masses may not always present with their characteristic radiological findings; and that extreme caution should be practiced by the radiologist and the surgeon in order to prevent iatrogenic echinococcal dissemination.

Child↗

PubMed1990

Percutaneous cyst puncture in the treatment of cyst infection in autosomal dominant polycystic kidney disease.

Cyst infection in autosomal dominant polycystic kidney disease (ADPKD) poses a difficult diagnostic and therapeutic problem. We describe a serious indolent cyst infection due to Staphylococcus aureus, which was successfully diagnosed and treated with repeated percutaneous cyst drainage and intravenous (IV) antibiotic therapy. Cyst aspiration also permitted monitoring of cyst antibiotic levels and evidence of active infection.

Adult↗

PubMed2002

Protective effects of immunization with a recombinant cyst antigen in mouse models of infection with Toxoplasma gondii tissue cysts.

A portion of the major Toxoplasma gondii tissue cyst antigen (MAG1) was expressed in bacteria as a fusion to glutathione S-transferase (GST) and the purified fusion protein (rMAG1) was used to immunize mice in an attempt to induce protective immunity against challenge with live cysts from the T. gondii ME49 strain. Sixty percent of mice immunized with rMAG1 and challenged with 500 cysts of the T. gondii ME49 strain survived, while only 20% of mice immunized with GST alone survived, suggesting a protective effect specific to the MAG1 portion of the recombinant protein. In a model of chronic infection with ME49 cysts, rMAG1-immunized mice had significantly fewer cerebral cysts and reduced inflammation in the brain compared with mice immunized with GST alone.

Animals↗

PubMed2003

Oral immunization of BALB/c mice with Giardia duodenalis recombinant cyst wall protein inhibits shedding of cysts.

The process of encystation is a key step in the Giardia duodenalis life cycle that allows this intestinal protozoan to survive between hosts during person-to-person, animal-to-person, waterborne, or food-borne transmission. The release of cysts from infected persons and animals is the main contributing factor to contamination of the environment. Genes coding for cyst wall proteins (CWPs), which could be used for developing a transmission-blocking vaccine, have been cloned. Since the immunogenicity of recombinant Giardia CWP is unknown, we have investigated the immunogenicity of recombinant CWP2 (rCWP2) and its efficacy in interfering with the phenomenon of encystation taking place in the small bowels of BALB/c mice vaccinated with the recombinant protein. Here we report that the immunization of BALB/c mice with rCWP2 stimulated the immune system in a manner comparable to that for a live infection with Giardia muris cysts. Fecal and serum anti-rCWP2 immunoglobulin A (IgA) antibodies were detected in the immunized mice. In addition, anti-rCWP2 IgG1 and IgG2a antibodies were detected in the serum. mRNAs coding for Th1 and Th2 types of cytokines were detected in spleen and Peyer's patch cells from immunized mice. When the vaccinated mice were challenged with live cysts, the animals shed fewer cysts. We conclude that rCWP2 is a possible candidate antigen for the development of a transmission-blocking vaccine.

Administration, Oral↗

PubMed1988

Polarized epithelial cysts in vitro: a review of cell and explant culture systems that exhibit epithelial cyst formation.

The purpose of this paper is to review in vitro cell and explant culture systems that exhibit epithelial cyst formation and that are used as models of polarized epithelial function. We examine a number of culture systems derived from a variety of cell and organ types, briefly describe the methodology and conditions used to establish these cultures and discuss aspects of the experimental application of each system. We conclude that the characteristics of epithelial cyst-forming cultures are dependent upon the origin and identity of the cell population, as well as the multiple factors that define the culture environment. Culture systems in which epithelial cyst development occurs provide tools to study fundamental problems in epithelial biology, such as the establishment and maintenance of cell polarity, cell recognition and cell sorting, also cell-specific functions involving solute and water transport and the production and modification of secreted products. In addition, epithelial cyst culture systems offer useful models to better understand cellular behavior in various pathologic conditions of cyst formation in man.

Animals↗

PubMed1995

[An electron microscopic study of the natural death of cyst cells in Sarcosporidia. I. Ultrastructural changes in the cytoplasm of the cyst cells of Sarcocystis muris and S. bovifelis].

A complicated development of Sarcocystis muris and S.bovifelis, within tissue cysts (sarcocysts), was examined in terms of a phenomenon of programmed cell death well-known in Metazoa. It looks likely that this phenomenon of versatile significance in living organisms has not yet been followed in parasitic protozoa. This is the first attempt to find out a general picture of morphological changes, occurring in the course of natural death in parasitic protozoa. With electron microscope, a study was made of sarcocysts of S. bovifelis isolated from oesophagus muscles of a naturally infected cow. In 6-month old sarcocysts of S. muris, three morphofunctional cell types are commonly distinguished: little differentiated metrocytes, intermediate cells, and highly differentiated < >, homologous to gamonts of other Sporozoa. Among numerous cyst cells, looking overtly normal, some < > cells tend to be encountered, which increase in number in 10 month old cysts, i.e. as sarcocysts are getting older. At least three stages of morphological degradation are to be distinguished in the cyst cells, with special attention being paid to changes in their cytoplasm. The first stage degradation involves ultrastructural changes in cell organelles, primarily in rough endoplasmic reticulum, whose membranes form vacuoles, with various kinds of membranous and non-membranous materials inside. At the second stage, apical organelles of cyst cells are involved: rhoptries are seen to lose their contrast, suggesting that their proteinaceous content may be discharged into the cell cytoplasm; eventually, membranes of rhoptries disappear. Micronemes seem to break into composing channels of endoplasmic reticulum. Ultimately, in the cells committed to death, the main body of cell organelles looks indecipherable, and the whole cells become filled with numerous vacuoles of different sizes and configuration. At the third statge of morphologoical degradation, cell trans

Animals↗

PubMed1987

Aneurysmal bone cyst associated with a dentigerous cyst: report of case.

An aneurysmal bone cyst associated with a dentigerous cyst filled the entire maxillary right sinus and corresponding eroding portions. The report discusses the unusual presence of a dentigerous cyst, documentation of an aneurysmal bone cyst associated with a primary lesion, and offers suggestions as to the common pathogenesis of the two lesions.

Adult↗

PubMed1989

A lateral periodontal cyst in association with a follicular cyst.

A case is described in which two separate developmental odontogenic cysts were associated with an unerupted lower third molar tooth. Radiological and histological examination showed that these were a lateral periodontal cyst and a follicular (dentigerous) cyst. This unusual occurrence provides substantial evidence that the periodontal cyst may have an origin from the cell rests of Malassez.

Adult↗

PubMed2000

Combined cutaneous hamartoma encompassing benign melanocytic naevus, vellus hair cyst and epidermoid cyst.

We describe a combined cutaneous hamartoma in a 57-year-old man, which comprised a vellus hair cyst, an epidermoid cyst and an intradermal melanocytic naevus in a single facial tumour. The vellus hair cyst was filled with keratinous material with unusual slit-like lacunae. While numerous cases of epidermoid cyst have been reported in association with an intradermal melanocytic naevus, our case is a rare example of a lesion combining several hamartomatous elements.

Cysts↗

PubMed2003

Simultaneous occurrence of sublingual dermoid cyst and oral alimentary tract cyst in an infant: a case report and review of the literature.

The simultaneous occurrence of sublingual dermoid cyst and oral alimentary tract cyst is very rare. A literature search revealed only two previous cases and one other, where a dermoid cyst was associated with a gastrointestinal microcyst in its cyst wall. We report a case of a six-week-old Caucasian boy, who presented with swelling of the tongue and floor of mouth, which interfered with his normal feeding and swallowing. The swelling was rapidly increasing in size and had become an airway threat. Magnetic resonance imaging (MRI) scans revealed the presence of a lobulated lesion arising in the region of the floor of the mouth on the left and a further lobule which actually invaded the soft tissues of the inferior aspect of the tongue. These two cystic lesions were excised surgically via an intraoral approach and the infant made a complete recovery postoperatively, with resumption of normal feeding and swallowing. The differential diagnoses and approach to sublingual swellings are discussed and the importance of prompt treatment is emphasized.

Cysts↗