PURPOSE: The purpose of this study is to analyze the CT features of the cystic masses in the neck and to review differential diagnosis. MATERIALS AND METHODS: We retrospectively reviewed and analyzed the CT findings of 22 histopathologically proved, cystic neck masses in regard to the location in fascial plane and relationship with adjacent organ. RESULTS: Of 22 cases, ten congenital cysts two ranulas, seven inflammatory lesions, and three solid tumors were includded. Ten congenital cystic masses were located in typical locations as branchial cleft cyst(5) in mandibular angle, thyroglossal duct cyst(3) in visceral space embeded within the strap muscles, cystic hygroma(1) and cavernous hemangioma(1) in posterior cervical space with insinuating appearance. Two cases of ranula included one simple ranula localized in sublingual space and a plunging ranula extending to adjacent submandibular space. Seven cases of inflammatory lesions were characterized by multispatial locations and good contrast-enhancement of walls and adjacent tissue. Solid masses of low density mimicking cyst were two pleomorphic adenomas of submandibular gland and one neurilemmoma. CONCLUSION: It is considered that thorough analysis of the CT findings with attention to typical location, CT appearance, and the relationship with the adjacent structures usually leads to the correct diagnosis.
Adenoma, Pleomorphic ; Branchial Region ; Diagnosis ; Diagnosis, Differential* ; Muscles ; Neck* ; Neurilemmoma ; Ranula ; Retrospective Studies ; Submandibular Gland

Cyclopia is rare congenital craniofacial anomaly, in which the eyes are fused together and located in a single orbit. It is consistently associated with severe holoprosencephaly, which is the failure of cleavage of the prosencephalon with a deficit in the midline facial development. chromosomal study revealed 47, X( ), +13 (Patau syndrome).
Holoprosencephaly ; Orbit ; Prosencephalon ; Trisomy*

Whiplash injury in low-speed traffic accidents are not objectively verified by medical equipment, thereby creating scope for misuse, which has resulted in huge social losses worldwide. The aim of this study was to examine the influence of low-speed vehicular rear-impact collisions on middle-aged men, and to analyze the head and neck injury criteria for the symptomatic human volunteers. Data was examined from the results of 50 dynamic sled tests, originally performed by Hong et al. (2012). In the previous tests, 50 men aged 30~50 years were exposed to an impulse equivalent to a bumper-to-bumper rear collision under medical supervision, and no resulting whiplash injury was identified. In this study, for 6 subjects who experienced dull aches over their bodies, head injury criteria (HIC15) and neck injury criteria (N(km)) were calculated according to the accelerations, forces, and moments at the occipital condyle measured by motion capture system. Although there were no changes in magnetic resonance imaging findings in all subjects at the pre-/post-test orthopedic examination, 6 subjects revealed mild aches around the shoulder, back, or lumbar area, and their symptoms disappeared within 2 days. The head and neck injury criteria, HIC15 (3.086 +/- 2.942) and N(km) (0.077 +/- 0.064) were obtained, and the maximum HIC15 and N(km) were found to be significantly lower than the critical injury assessment reference values (HIC15: 700, N(km): 0.3). Moreover, even though 2 subjects were exposed to the same level of change of velocity (7.9 km/h), each N(km) was significantly different (0.179, 0.057). One can therefore conclude that N(km) can vary according to voluntary movements in the human subject.
Acceleration ; Accidents, Traffic ; Aged ; Automobiles ; Craniocerebral Trauma ; Head ; Human Experimentation ; Humans ; Magnetic Resonance Imaging ; Male ; Neck ; Neck Injuries ; Organization and Administration ; Orthopedics ; Reference Values ; Shoulder ; Whiplash Injuries

The majority of the cysts developed in pancreas are inflammatory pseudocyst but neoplastic cysts are rarely encountered Especially, mucinous cystadenoma which was begun and originated from epithelial cell of pancreatic duct is difficult to differentiate from pseudocysts by preoperative clinical, laboratory and radiologic findings. Mucinous cystadenoma has a malignant potentiality, so complete excision of cystadenoma is the treatment of choice. Recently, we experienced one case of mucionus cystadenoma in 37 year-old female, we report it with a review of the literature.
Adult ; Cystadenoma ; Cystadenoma, Mucinous* ; Epithelial Cells ; Female ; Humans ; Mucins* ; Pancreas* ; Pancreatic Ducts

Proliferative periostitis is a rare form of osteomyelitis that is characterized by new bone formation with periosteal reaction common causes of proliferative periostitis are dental caries, periodontitis, cysts, and trauma. While proliferative periostitis typically presents as a localized lesion, in this study, we describe an extensive form of proliferative periostitis involving the whole mandibular ramus and condyle. Because the radiographic findings were similar to osteogenic sarcoma, an accurate differential diagnosis was important for proper treatment.
Dental Caries ; Diagnosis, Differential ; Mandibular Condyle ; Osteogenesis ; Osteomyelitis ; Osteosarcoma ; Periodontitis ; Periostitis*

PURPOSE: To assess the clinical characteristics of central serous chorioretinopathy in patients over 50 and be of help to diagnose it. METHODS: The medical records of 30 eyes of 24 patients diagnosed as central serous chorioretinopathy were reviewed retrospectively. We analyzed age, sex, visual acuity, and evaluated clinical features of fundus, characteristics of fluorescein angiography, indocyanine green angiography (ICGA), optical coherence tomography (OCT). RESULTS: The mean age was 55.4 years (50-69 years). 18 were male and 6 were female. Of the 30 eyes, 8 eyes were identified as classic central serous chorioretinopathy and 22 eyes were identified as chronic. On ICGA, 16 patients (76.2%) showed transient multifocal choroidal hyperpermeability bilaterally and 19 patients (90.5%) showed dilated choroidal vasculature bilaterally. Late hypofluorescence due to severe atrophy, hypertrophy, pigmentation, or small detachment of retinal pigment epithelium was noted in 22 eyes. On fellow eyes, retinal pigment epithelial degeneration was found in 15 eyes (79%). On OCT, serous retinal pigment epithelial detachment was noted in 10 eyes, serous retinal detachment in 25 eyes, and foveal thickening in 19 eyes. CONCLUSIONS: Central serous chorioretinopathy in patients over 50 was often associated with more degeneration of retinal pigment epithelium. ICGA and OCT are useful in diagnosing central serous chorioretinopathy in old ages.
Angiography ; Atrophy ; Central Serous Chorioretinopathy* ; Choroid ; Female ; Fluorescein Angiography ; Humans ; Hypertrophy ; Indocyanine Green ; Male ; Medical Records ; Pigmentation ; Retinal Detachment ; Retinal Pigment Epithelium ; Retinaldehyde ; Retrospective Studies ; Tomography, Optical Coherence ; Visual Acuity

Heterotopic salivary gland tissue (HSGT) consists of salivary tissue in places where it does not normally exist. Usually, HSGT presents as a draining sinus or nodule of the neck. The pathogenesis of HSGT of the neck remains uncertain. But HSGT in the neck is most widely thought to arise from defective closures and ectodermal hetroplasia of the precervical sinus of His. HSGT in the neck is rare and only a few cases have been reported in Korea. We recently experienced a case of HSGT in the neck presenting as a fistula of the anterior lower neck. We thought this as a 2nd brachial cleft anomaly; however, biopsy revealed HSGT. HSGT in the neck should be considered as one of the causes of a neck mass or fistula in children. Herein, we report this case of HSGT with a literature review.

In spite of today's striking development of radiologic studies, the differential diagnosis of acute scrotal diseases is difficult. We studied 14 cases of appendix testis torsion that had visited our hospital from May 1991 to October 1994 in order to be diagnosed accurately and made appropriate treatment. The torsion of appendix testis occurred during prepubertal ages, and ages of our 14 cases were from 3 to 13, and average age was 9.6 years old. In all of our cases the chief complaint was scrotal pain. The localized pain and palpable tender mass of testicular upper pole were present in only 8 of 14 cases and 5 cases had blue dot sign. These were very helpful in diagnosis of torsion of appendix testis. Doppler ultrasonography was done in 9 cases and radionuclide scrotal imaging was done in 3 cases, but none of these studies were diagnosed as torsion of appendix testis definitely. But in 8 cases that had positive blue dot sign and/or localizing tender mass in upper pole of testis, we could diagnose torsion of appendix testis certainly. We operated 11 of l4 cases( scrotal exploration and excision of torsed appendix testis) and treated conservatively 3 of 14. Most 11 operated cases were revealed that scrotal pains were relieved within 24 hours of postoperative period and secondary complications did not occurred in 3 cases treated conservatively. In summary, the early surgical exploration is necessary to improve maximal testicular salvage when testis torsion cannot be ruled out completely in acute scrotal diseases. But if testis torsion can be ruled out completely, conservative treatment may be considered in torsion of appendix testis.
Appendix* ; Diagnosis ; Diagnosis, Differential ; Postoperative Period ; Strikes, Employee ; Testis* ; Ultrasonography, Doppler

Intestinal duplication cysts are characterized by the attachment to some part of the gastrointestinal tract with which a blood supply is shared, and have an epithelial lining resembling some part of the alimentary tract. A 15-month-old female was admitted to our hospital with cyclic irritability, vomiting, and blood-tinged stool. The results of an ultrasound showed an ileocolic intussusception and a 1.3 cm cystic mass had double-wall sign and a Y-configuration with an adjacent ileal loop. She had a past history of two ileocolic intussusceptions. The cystic mass was considered to be a pathologic lead point, so resection and end-to-end anastomosis was performed. The gross and histologic evaluation of the specimen demonstrated a 2.4x2.4 cm cystic mass containing yellow mucoid fluid and the cyst wall was lined with intestinal and gastric mucosa and enclosed by a layer of muscle, which was shared with the adjacent ileum.
Child ; Female ; Gastric Mucosa ; Gastrointestinal Tract ; Humans ; Ileum ; Infant ; Intussusception ; Muscles ; Vomiting

A 19-yr-old woman with a previous history of a mass of the right ciliary body presented with a decreased visual acuity of right eye. Clinicoradiologic examinations suggested a recurrent mass of the ciliary body. Enucleation of the right eye was performed under the impression of malignant tumor. On microscopic examination, the tumor was a mesectodermal leiomyoma of the ciliary body. On immunohistochemistry, the tumor cells were reactive to smooth muscle actin and vimentin, but not reactive to cytokeratin, S-100 protein, neurofilament, desmin, epithelial membrane antigen, HMB-45, glial fibrillary acidic protein, and synaptophysin. Electron microscopy revealed numerous thin longitudinally placed myofilaments and focal densities in the cytoplasms. In the review of the literature, only 27 cases of mesectodermal leiomyoma of the ciliary body were reported, however, there was no report of recurrent cases. Mesectodermal leiomyoma should be differentiated from other orbital spindle-cell tumors such as amelanotic melanomas and glial tumors. Immunohistochemical and electron microscopic studies may be useful for the correct diagnosis by showing smooth muscle differentiation in the tumor cells.
Actins/biosynthesis ; Adult ; Cell Differentiation ; Ciliary Body/*pathology ; Cytoplasm/metabolism ; Female ; Human ; Immunohistochemistry ; Leiomyoma/*diagnosis/*pathology ; Microscopy, Electron ; Myocytes, Smooth Muscle/metabolism ; Recurrence ; Uveal Neoplasms/*diagnosis/pathology ; Vimentin/biosynthesis