Bone metastasis of hepatocellular carcinoma appears to be peculiar when clinical manifestation of liver disease is not apparent, and initial diagnosis of metastatic hepatocellular carcinoma by fine needle aspiration cytology is rarely obtained. We experienced a case of 45-year-old man with metastatic hepatocellular carcinoma in the sacrum, which was diagnosed by fine needle aspiration cytology. The intrahepatic mass, measuring 1.2cm in diameter and kept unchanged in size for two years, was never proved to be hepatocellular carcinoma histopathologically. The aspirated neoplastic cells were mostly in sheets, showing abundant acidophilic cytoplasm and large, round, centrally located nuclei with single, prominent acidophilic mucleoli. In the cell block section, diagnosis of metastatic well-differentiated hepatocellular carcinoma was made without difficulty, and definite trabecular fashion with sinusoidal endothelial cell lining was found.
Biopsy, Fine-Needle ; Carcinoma, Hepatocellular ; Cytoplasm ; Diagnosis ; Endothelial Cells ; Humans ; Korea* ; Liver Diseases ; Middle Aged ; Neoplasm Metastasis ; Prevalence* ; Sacrum

No abstract available.
Tissue Expansion Devices*

No abstract available.
Replantation*

The origin of osteoclast-like giant cell tumor (OGCT) of the salivary gland has been debated because the prototypic cells of osteoclast-like cells and mononuclear stromal cells are largely unexplained in this gland. Bone marrow-derived CD14+ and CD45+ monocyte-derived multipotential cells (CD14+/CD45+ MOMC) may be one of the possible origins of OGCTs of salivary glands, which have never been explored in salivary OGCTs. We present a case of OGCT accompanied with carcinoma ex pleomorphic adenoma in the parotid gland of a 67-year-old Korean female. The tumor presented as a rapidly growing cervical mass comprising a central area of carcinoma ex pleomorphic adenoma and a peripheral circumferential area of OGCT. The immunohistochemical staining pattern was phenotypically consistent with bone marrow-derived CD14+/CD45+ MOMC. This case is the first report of a salivary OGCT in Korea.
Adenoma, Pleomorphic ; Aged ; Cytosine ; Female ; Giant Cell Tumors ; Giant Cells ; Humans ; Korea ; Mixed Tumor, Malignant ; Monocytes ; Osteoclasts ; Parotid Gland ; Salivary Glands ; Stromal Cells

The origin of osteoclast-like giant cell tumor (OGCT) of the salivary gland has been debated because the prototypic cells of osteoclast-like cells and mononuclear stromal cells are largely unexplained in this gland. Bone marrow-derived CD14+ and CD45+ monocyte-derived multipotential cells (CD14+/CD45+ MOMC) may be one of the possible origins of OGCTs of salivary glands, which have never been explored in salivary OGCTs. We present a case of OGCT accompanied with carcinoma ex pleomorphic adenoma in the parotid gland of a 67-year-old Korean female. The tumor presented as a rapidly growing cervical mass comprising a central area of carcinoma ex pleomorphic adenoma and a peripheral circumferential area of OGCT. The immunohistochemical staining pattern was phenotypically consistent with bone marrow-derived CD14+/CD45+ MOMC. This case is the first report of a salivary OGCT in Korea.
Adenoma, Pleomorphic ; Aged ; Cytosine ; Female ; Giant Cell Tumors ; Giant Cells ; Humans ; Korea ; Mixed Tumor, Malignant ; Monocytes ; Osteoclasts ; Parotid Gland ; Salivary Glands ; Stromal Cells

The biopsy and cyst aspiration of central nervous lesions by computerized tomography(CT) scan has become a popular method. Authors can simply make a needle placement in deep intracranial hematomas, brain abscesses and cystic tumors by using U-loop with CT guided external markers. Our method is believed to deserve reporting in that it is easy, safe and less expensive.
Biopsy ; Brain Abscess ; Hematoma ; Needles* ; Tomography, X-Ray Computed

PURPOSE: To determine the MR findings of cervical lymphadenopathy which distinguish tuberculouslymphadenitis(TL) from metastatic lymphadenopathy(ML). MATERIALS AND METHODS: We retrospectively analyzed the MRfindings of 14 patients with TL and 19 with ML. Thirty-nine lesions in 14 patients with TL and 80 lesions in 19with ML were classified into three categories: conglomerate lesion (TL, 7; ML, 8); discrete lesion withoutnecrosis (TL, 3; ML, 15); and discrete lesion with necrosis (TL, 29; ML, 57). Between TL and ML, we compared age,sex, bilaterality, multiplicity, associated pulmonary tuberculosis, infiltration of adjacent fat, muscle, skin andsubcutaneous tissue, margin, and signal intensities on T1- and T2-weighted images. In discrete lesion, we alsocompared the minimal to maximal dimension ratio, and in discrete necrotic lesion, the thickness and evenness ofrim enhancement, and the location and extent of necrosis. RESULTS: There were statistically significantdifferences between TL and ML in age(34.7+/-13.1 years; 56.1+/-14.3 years), male to female ratio(3:11; 13:6),bilaterality(1/14; 10/19), multiplicity(5/14; 14/19), and associated active pulmonary tuberculosis(7/14; 1/19). OnT2-weighted images, TL showed predominantly homogeneous (30/39) or high (20/39) signal intensity, similar to thatof cerebrospinal fluid, but the signal inteusity of ML was predominantly heterogeneous(58/80), or lower than orsimilar to that of fat(41/80). Between TL and ML, however, there were no statistically significant differences ininfiltration of adjacent tissue, margin, signal intensity and its heterogeneity on T1-weighted image, minimal tomaximal dimension ratio, thickness and evenness of rim enhancement, or the location and extent of necrosis. CONCLUSION: In cervical lymphadenopathy, the existence of TL rather than ML is suggested by single or unilaterallesion in a young woman, by associated active pulmonary tuberculosis, or by homogeneous high signal intensity onT2-weighted MR images.
Cerebrospinal Fluid ; Female ; Humans ; Lymphatic Diseases* ; Male ; Necrosis ; Neoplasm Metastasis* ; Population Characteristics ; Retrospective Studies ; Skin ; Tuberculosis* ; Tuberculosis, Pulmonary

PURPOSE: To determine how clinical and angiographic factors relate to the amount of subarachnoid blooddetected by computerized tomography in patients with a ruptured aneurysm. MATERIALS AND METHODS: Between January1996 and December 1997, 22 patients with a posterior communicating artery aneurysm were retrospectively evaluated. RESULTS: Oval(three of four cases), funnel(both cases), and daughter-sac (four of five cases) types of aneurysmalsac were found among the 13 patients with a large amount of subarachnoid blood ; eight of these had a past historyof hypertension or diabetes. Seven of eleven cases of cylindrical-type aneurysmal sac were found among the 9patients with a small amount of sularachnoid blood ; eight of these had no past history of hypertension ordiabetes. The average S/N ratio (ratio of maximum sac length to neck diameter) of patients with a small amount ofblood was higher than that of patients with a large amount of blood(2.72 vs 2.07). CONCLUSION: Although manyfactors influence the amount of subarachnoid blood in an aneurysmal rupture, we found that a large amount of bloodwas frequently present in the oval, funnel and daughter sac types of aneurysm, when S/N ratio was low, and when anunderlying disease such as hypertension or diabetes was present. Conversely, a small amount of blood was presentin the cylindrical type, when S/N ratio was high, and where there was no of underlying disease.
Aneurysm ; Aneurysm, Ruptured ; Humans ; Hypertension ; Intracranial Aneurysm* ; Neck ; Nuclear Family ; Retrospective Studies ; Rupture

BACKGROUND: Although dental implantation has become widespread and acceptable treatment for dental prosthodontics, maxillary posterior jaw region is often complicated by the pneumatization of the maxillary sinus and physiological resorption of the alveolar bone. When this occurs, the residual bone between the floor of the sinus and the crestal ridge is inadequate for the placement of implants. The sinus elevation procedure provides a way to increase the amount of available bone and to allow the placement of longer implants. MATERIALS & METHODS: We studied 11 patients requiring the implant placements and the maxillary sinus elevation simultaneously from 1996 to 2003 in our clinic. Nine patients were males and two patients were females, aged from 39 to 72(mean=51.6). Four patients had medical compromised states; angina pectoris, diabetes, hypertension, hepatitis. Patients didn't show any pathologic findings clinically or radiographically. We studied the success and survival rate of implants, factors increasing the osseointegrating capacity of implants. RESULTS: The success rate of osseointegration of implants was 93%. At least 6 months after loading on implants, the survival rate of implants was 78.5%. Autogenous bone graft and adequate residual bone height(>6mm) increased survival rate of implants. CONCLUSION: Successful implant placement with maxillary sinus elevation mainly depends on sufficient residual bone height, healthy maxillary sinus, autogenous bone graft.
Angina Pectoris ; Dental Implantation ; Dental Implants ; Female ; Hepatitis ; Humans ; Hypertension ; Jaw ; Male ; Maxillary Sinus* ; Osseointegration ; Prosthodontics ; Survival Rate ; Transplants

BACKGROUND: Although dental implantation has become widespread and acceptable treatment for dental prosthodontics, maxillary posterior jaw region is often complicated by the pneumatization of the maxillary sinus and physiological resorption of the alveolar bone. When this occurs, the residual bone between the floor of the sinus and the crestal ridge is inadequate for the placement of implants. The sinus elevation procedure provides a way to increase the amount of available bone and to allow the placement of longer implants. MATERIALS & METHODS: We studied 11 patients requiring the implant placements and the maxillary sinus elevation simultaneously from 1996 to 2003 in our clinic. Nine patients were males and two patients were females, aged from 39 to 72(mean=51.6). Four patients had medical compromised states; angina pectoris, diabetes, hypertension, hepatitis. Patients didn't show any pathologic findings clinically or radiographically. We studied the success and survival rate of implants, factors increasing the osseointegrating capacity of implants. RESULTS: The success rate of osseointegration of implants was 93%. At least 6 months after loading on implants, the survival rate of implants was 78.5%. Autogenous bone graft and adequate residual bone height(>6mm) increased survival rate of implants. CONCLUSION: Successful implant placement with maxillary sinus elevation mainly depends on sufficient residual bone height, healthy maxillary sinus, autogenous bone graft.
Angina Pectoris ; Dental Implantation ; Dental Implants ; Female ; Hepatitis ; Humans ; Hypertension ; Jaw ; Male ; Maxillary Sinus* ; Osseointegration ; Prosthodontics ; Survival Rate ; Transplants