Omphalith generally consists of keratinous materials and sebum. It gradually forms a stone-like hard, dark brown to a black mass in elderly persons with deep umbilical depression and not clean umbilicus. A 75 years old male noticed a brownish black nodule on the umbilical depression 2 weeks ago. He did not try to remove it. This nodule gradually became to project from umbilical depression accompanied with intermittent pain. Removed specimen was brownish black stonelike on projecting polypoid lesion, but in umbilical depression, yellowish brown and not so hard. Histopathological examination showed a small quantity of melanin granules, but no nuclear components of cells.
Aged ; Depression ; Humans ; Male ; Melanins ; Sebum ; Umbilicus

Taenia aolium is responsible for producing human intestinal infection with the tapeworm (taeniasis) and the lodging of the larval stage (Cysticercua cellulosae) in numerous organs. especially subcutaneous tissue with the prodution
Cestoda ; Cysticercosis* ; Epidemiologic Studies* ; Humans ; Subcutaneous Tissue ; Taenia

The authors introduced flip back spin echo (FBSE) technique for MR imaging of the temporomandibular joint (TMJ) instead of conventional spin echo (SE) technique, and evaluated whether FBSE technique in MRI of TMJ is adequate for the diagnosis of the disorders or not. FBSE T1 parasagittal images in closed mouth state and sequential opening and closing mouth states using patient's own finger(s) were obtained and then FBSE T1 paracoronal image in closed mouth state and STAGE(short tip angle gradient echo) parasagittal T2WI were followed. All 30 images of the symptomatic TMJs using FBSE technique were excellent in the visualization of articular and their displacement, and we could easily diagnose the internal derangement. FBSE technique was adequate for the diagnosis of internal derangement of the TMJ, and the modified cine display from images using FBSE technique was advantageous in the diagnosis of the disorders by visualization of the dynamic motion of the TMJ.
Diagnosis ; Magnetic Resonance Imaging* ; Mouth ; Temporomandibular Joint*

PURPOSE: The purpose of this study is to find some points that may help the differential diagnosis of ring lesions in magnetic resonance (MR) imaging of the liver through recognition of the characteristics of the morphology and the signal intensities of the ring lesions. MATERIALS AND METHODS: T1- and T2-weighted axial spin-echo images and gadolinium-enhanced Tl-weighted images were obtained with a 1.0 T superconducting MR imager. We reviewed the MR findings of 23 hepatic ring lesions which were confirmed as hepatocellular carcinomas (13), metastases (4), liver abscesses (4), hydatid cyst (1), and hematoma (1). RESULTS: There were 19 single rings and 4 double rings (all the cases were liver abscesses) on Tl-weighted images, and 8 single rings and 14 double rings on T2-weighted images. The signal intensity of the ring was low in hepatocellular carcinoma on Tl-weighted images and in hydatid cyst on T2-weighted images. It was high on Tl-weighted images in subacute hemaroma. Target lesion as an inner high-signal-intensity ring surrounded by a high-signal-intensity ring on T2-weighted images was seen in metatasis, liver abscess, and hepatocellular carcinoma. CONCLUSION: It is helpful to recognize the chracteristics of morphology and signal intensities of the ring lesions in the differential diagnosis of hepatic focal lesions.
Carcinoma, Hepatocellular ; Diagnosis, Differential ; Echinococcosis ; Hematoma ; Liver Abscess ; Liver* ; Magnetic Resonance Imaging* ; Neoplasm Metastasis

No abstract available.
Chromosome Aberrations*

PURPOSE: To evaluate the significance of high signal intensity of the septum pellucidum in hydrocephalus on proton density-weighted brain MR images. MATERIALS AND METHODS: Authors reviewed the MR images of 418 cases of patients with normal(175 cases), hydrocephalic(35 cases), atrophic(58 cases), and other groups(150 cases) retrospectively. We analyzed the signal intensity of the septum pellucidum in the normal group and the incidences of high signal intensities of periventricular area of frontal horn of lateral ventricle(area 1), periventricular area except area 1(area 2), callososeptal area(area 3), and septum pellucidum(area 4) in the normal and abnormal groups. RESULTS: In the normal group, the septurn pellucidum was isointense to the head of caudate nucleus on proton density-weighted image. High signal intensity of the septurn pellucidurn was seen in 31 cases (22 cases of hydrocephalus, 5 cases of brain atrophy, and 4 cases of others), and showed high specificity(91.4%) for hydrocephalus in spite of low sensitivity(62.9%), as compared with periventricular hyperintensities of other areas. CONCLUSION: High signal intensity of the septum pellucidum on proton density-weighted image may be caused by transependymal CSF migration in the patients with hydrocephalus, and considered as an additional finding of hydrocephalus in the cases of ventriculomegaly.
Animals ; Atrophy ; Brain ; Caudate Nucleus ; Head ; Horns ; Humans ; Hydrocephalus* ; Incidence ; Protons ; Retrospective Studies ; Septum Pellucidum*

We have treated the open tibia shaft fractures, especially Gustilo type II, with unreamed interlocking intramedullary nail. In cases combined with soft tissue damage around fracture site, maintaining rigid internal fixation and preserving endoosteal blood supply is important in union of fracture and soft tissue healing. We have analyzed 18 cases of Gustilo type II open tibial shaft fractures managed with intramedullary nailing without reaming since 1991, the follow-up period was average 22 months. Most of the fractures were the result of moderate to high-energy trauma. In all 18 cases, nails were inserted via closed method. Static interlocking nailing was used in all cases. In 16 cases, union of the fracture was achieved from 16 to 25 weeks(average 23 weeks). In the other 2 cases, union was achieved in 7 months. There was no serious postoperative complication except one skin infection with skin defect managed by skin flap and one failure of the interlocking screw. These results are comparable with those obtained from other forms of fixation, including immobilization with a cast, reamed intramedullary nailing, and external fixation.
Follow-Up Studies ; Fracture Fixation, Intramedullary ; Immobilization ; Methods ; Postoperative Complications ; Skin ; Tibia

No abstract available.
Head* ; Neck*

Benign neonatal eruptive hemangiomatosis is extremely rare congenital multiple hemangiomatic disease without systemic visceral involvement. The akin lesions are usually detected at birth and virtually disappear by the age of 12 months. A female infant of 27 days had three or four flat reddish purple maculopapules on the face from the time of birth. They spreaded into the entire body surface and increased in size forming plaque upto little finger tip size for 3 days. There was no evidence of asociated symptomatic visceral involvement. Histologically they were compatible with capillary angiomatous nevi. They began to resolve into residual hyperpigmented macules necrotizing centrally at 2 months of age and almo. completely resolved at 6 months of age without any treatment.
Capillaries ; Female ; Fingers ; Humans ; Infant ; Nevus ; Parturition

Paederus dermstitis (or dermatitis linearis), caused by the insect genus Paederus, is characterized by linear erythernatous, vesicopustular lesions. In 1968, we proved that causative agent is Paederus fuscipes. During the 20-year period since then (from June 1968 to September 1988), we have experienced 156 cases of the diseaes in our clinic, and the clinical features were studied with the following results. (1) They were found only during summer months from June to September. Most prevalent in June(47%), followed by August, July and September, in decreasing order. (2) People in their twenties were affected most often(10%), with females outnumbering males, by approximately 2.8 to 1. (3) The lesions were found exclusively over exposed areas, such as face, neck, and extremities (4) Experiments on a volunteer revealed that the same skin lesions as in the patients can be produced by rubbing the anal portion of the insect. (5) Spongiosis and subcorneal pustule of epidermis were the main histopathological findings. (6) The insects appear ant-like and measures 6.5 to 7mm in length. It has a black, round head with pslpuli black, rectangular, short elytra, yellowish brown pronotum and abdomen composed of 6 segments, of which two caudal ones(hypopygium) were dark brown. The meso and metathorax, and the lower ends of the femurs in meso and metapedes appear dark brown. (7) Wide use of potent pesticides, herbicides, or insecticides as well as the urbanization may have reduced the out breaks of the disease in recent years.
Abdomen ; Dermatitis* ; Epidermis ; Extremities ; Female ; Femur ; Head ; Herbicides ; Humans ; Insecticides ; Insects ; Male ; Neck ; Pesticides ; Skin ; Urbanization ; Volunteers