Tumor and tumor-like lesion of the patella are extremely rare. The following have been reported: giant cell tumor; osteoblastoma; osteoid osteoma; chondroblastoma; solitary osteochon droma; chondroma; ganglion; simple bone cyst; aneurysmal bone cyst; hyperparathyrodism (brown tumor); malignant lymphoma; haemangioendothelioma; haemangima; primary osteosarcoma; plasmocytoma and metastases. Chodroblastoma in patella were very rare and first repoted by Jerone Cohren in 1963. On review of our literatures, we could not find reported case in Korea. The purpose of this paper is to present an unusual case of chondroblastoma of the patella.
Aneurysm ; Bone Cysts ; Chondroblastoma* ; Chondroma ; Ganglion Cysts ; Giant Cell Tumors ; Korea ; Lymphoma ; Neoplasm Metastasis ; Osteoblastoma ; Osteoma, Osteoid ; Osteosarcoma ; Patella* ; Plasmacytoma

OBJECTIVES: Primary cardiac tumors are rare, being found in approimately 1 in 10,000 to 33 in 1,000 routine autopsies in patients of all ages. The purpose of this study is to evaluate the status of primary cardiac tumor in Korea, Their clinical and pathological characteristics. We analysed our 13 cases of primary cardiac tumors confirmed by operative findings, and all cases which were published in several literatures. METHOD: Thirteen cases of primary cardiac tumors confirmed by pathologic findings from 1982 in keimyung university hospital, and 116 cases of published data from 1962 were reviewed their pathologic and clinical findings. RESULTS: One hundred and twenty nine cases were included in this study, The age was ranged from 15 dyas to 75 years old. 45 cases(35%) were male and 84(65%) were female. 119 cases(92.2%) were revealed benign tumor : 115 myxoma, 2 rhabdomyoma, 1 lipoma and 1 fibroma. 10 cases(7.8%) were malignant tumors : 4 angiosarcoma, 2 fibrous histiocytoma, 2 rhabdomyosarcoma, 2 fibrosarcoma. The most common site of benign tumor was left atrium, and of malignant tumor was right atrium. CONCLUSION: Most of primary cardiac tumors were benign. And left atrial myxoma was most common primary cardiac tumor. Angiosarcoma was most common malignant tumor, occured in right atrium most frequently.
Autopsy ; Female ; Fibroma ; Fibrosarcoma ; Heart Atria ; Heart Neoplasms ; Hemangiosarcoma ; Histiocytoma, Benign Fibrous ; Humans ; Korea ; Lipoma ; Male ; Methods ; Myxoma ; Rhabdomyoma ; Rhabdomyosarcoma

Benign fibrous histiocytoma (BFH) is a rare benign primary skeletal tumor that occurs commonly in the long bones, spine and pelvis. BFH constitutes a diagnostic challenge because it shares clinical background, radiological characteristics, and histological features with other fibrous lesions such as non-ossifying fibroma, giant cell tumor. We present a case of BFH with cystic change that occurred in the distal femur. We did not identify any case of BFH with cystic change involving the majority of the lesion that occurred in the metaepiphysis of the long bone.
Femur* ; Fibroma ; Giant Cell Tumors ; Hemorrhage ; Histiocytoma, Benign Fibrous* ; Pelvis ; Spine

No abstract available.
Osteoma, Osteoid*

A case of osteold osteoma was presented because of its rarity in number particularly in localization of tumor, that is, subperiosteal in position. Also we could treat the patient successfully by surgical intervention and the removed specimen preserved beautifully all the character and contour of the tumor grossly and microsoopically.
Humans ; Osteoma ; Osteoma, Osteoid

Fibrous histiocytomas are characterized by a variable combination of cells with fibroblastic and histiocytic features. They exhibit a distinctive but inconstant cellular arrangement referred to as a storiform or cartwheel pattern. Considerable corfusion has enveloped these tumors as a result of their various terminology-fibrous histiocytoma, dermatofibroma, sclerosing hemangioma, fibroxanthoma, subepidermal nodular fibrosis, xanthogranuloma, giant cell tumor of tendon sheath. A histologically benign but locally infiltrating, 15 * 20cm sized, fibrous histiocytoma was found in the posterior aspect of left thigh of a 17-year-old man. The tumor was incompletely excised due to adhesion of the tumor mass to sciatic nerve and then radiation therpy was combined, Histogenesis and prognostic aspects of the tumor are discussed.
Adolescent ; Fibroblasts ; Fibrosis ; Giant Cell Tumors ; Histiocytoma ; Histiocytoma, Benign Fibrous* ; Humans ; Sciatic Nerve ; Tendons ; Thigh

Sclerotic fibroma is often regarded as a unique proliferating lesion, but some authors regard it as an end stage of other neoplasms, especially dermatofibroma. We report two cases of dermatofibroma with sclerotic fibroma-like change. The skin biopsy specimens from different patients showed a common finding of dermatofibroma, while some portions of the tumor were replaced by thick, hyalinized, eosinophilic collagen bundles and empty clefts with low cellularity, which was histologically similar to sclerotic fibroma. According to these findings, dermatofibroma with sclerotic fibroma-like change can be evidence of the possible pathogenesis of sclerotic fibroma.
Biopsy ; Collagen ; Eosinophils ; Fibroma ; Histiocytoma, Benign Fibrous* ; Humans ; Hyalin ; Skin

PURPOSE: We wanted to retrospectively determine the accuracy of an ultrasonographic diagnosis of superficial soft tissue masses in the extremities by using the histologic results as the reference standard. MATERIALS AND METHODS: From January 2005 to June 2010, 154 patients with soft tissue masses in the extremities and who underwent ultrasonographic evaluation followed by biopsy or resection were retrospectively evaluated. The ultrasonographic and histologic diagnoses of the soft tissue masses were lipoma, ganglion cyst, hemangioma, neurogenic tumor, giant cell tumor of the tendon sheath, epidermoid cyst, fibroma, glomus tumor, Baker's cyst and neurofibromatosis. RESULTS: Out of 154 patients, 114 (74%) patients showed concordance between the histologic diagnosis and the ultrasonographic diagnosis, and the remaining 40 (26%) patients did not. The diagnostic accuracy of each soft tissue mass was 95% for lipoma, 83% for ganglion cyst, 75% for hemangioma, 72% for neurogenic tumor, 50% for giant cell tumor of the tendon sheath, 43% for epidermoid cyst, 33% for fibroma and 100% each for glomus tumor, fibromatosis and Baker's cyst. Aside from these tumors, there were also sarcoma, malignant melanoma, elastofibroma, Kimura disease and pilomatricoma. Among the cases that showed discordance between the histologic diagnosis and the ultrasonographic diagnosis, three of them were notable; pilomatricoma being misdiagnosed as dermatofibroma protuberans, angiolipoma being misdiagnosed as vascular leiomyoma and malignant fibrous histiocytoma being misdiagnosed as a malignant soft tissue mass. CONCLUSION: The accuracy of an ultrasonographic diagnosis for soft tissue masses in the extremities varies greatly according to each type of mass. Lipoma, ganglion cyst, hemangioma, glomus tumor, neurogenic tumor and Baker's cyst showed a relatively high rate of concordance between the ultrasonographic diagnosis and the histologic diagnosis, but epidermoid cyst and fibroma showed a relatively lower rate of concordance.
Angiolipoma ; Angiolymphoid Hyperplasia with Eosinophilia ; Angiomyoma ; Biopsy ; Epidermal Cyst ; Extremities ; Fibroma ; Ganglion Cysts ; Giant Cell Tumors ; Glomus Tumor ; Hemangioma ; Histiocytoma, Benign Fibrous ; Histiocytoma, Malignant Fibrous ; Humans ; Lipoma ; Melanoma ; Pilomatrixoma ; Popliteal Cyst ; Retrospective Studies ; Sarcoma ; Soft Tissue Neoplasms ; Tendons

No abstract available.
Histiocytoma, Benign Fibrous*

No abstract available.
Histiocytoma, Benign Fibrous ; Lymphocytes