Positron emission tomography (PET) with 2-[F-18]-Fluoro-2-deoxy-D-glucose (FDG) was performed in ninteen patients who had benign musculoskeletal tumors in order to determine if there was a relationship between histologic grade of tumor and FDG uptake of tumor. These patients had been evaluated previously with computed tomography (CT) or magnetic resonance (MR) imaging or both. The diagnoses were confirmed with incisional or excisional biopsy or by radiographic follow-up. Generally high-grade tumors had significantly greater uptake of FDG than low-grade lesions . Benign lesions such as giant cell tumor, fibrous dysplasia, and osteofibrous dysplasia showed significant elevation of SUV (Standardized Uptake Value) above 4.0. On the contrary. The current studies suggest the utility of FDG-PET imaging as an adjunct to CT or MR imaging in the evaluation of benign tumors. And results of PET suggest benign tumors with high SUV are histologically active lesion and tend to be locally aggressive.
Biopsy ; Diagnosis ; Electrons* ; Follow-Up Studies ; Giant Cell Tumors ; Glucose* ; Humans ; Magnetic Resonance Imaging ; Positron-Emission Tomography

No abstract available.
Hemoptysis*

A case of infantile digital fibromatosis which developed on the right fifth toe of 2 year-old girl is reported. Microscopically, the eosinophilic cytoplasmic inclusions were frequently seen in the cytoplasm and outside of the fibroblasts.
Child, Preschool ; Cytoplasm ; Eosinophils ; Female ; Fibroblasts ; Fibroma ; Humans ; Inclusion Bodies ; Toes

Granuloma, annulare is a chronic dermatosis characterized by skin colored, firm intradermal papules or subutaneous nodules, which may be discrete or arranged in an annular configuration. Histologically the dermis shows well define8 areas of necrobiosis of collagen tissue surrounded. by palisading histiocytes and lymphocytes. There may be lobules of epithelioid cells ani multinucleated giant ce.1s surrounding the necrobiotic areas. Many factors have been implicated in the genesis of this reaction. Recent studies have indicated that delayed hypersensitivity reactions rnay be involved in the pathogenesis of granuloma annulare. We present a typical granulorna annulare on a 16 year-old boy who had flesh colored, hyperkeratotic small nodules arranged in ring fashion on the dorsum of hands and right ear auricle.
Adolescent ; Collagen ; Dermis ; Ear Auricle ; Epithelioid Cells ; Granuloma Annulare* ; Granuloma* ; Hand ; Histiocytes ; Humans ; Hypersensitivity, Delayed ; Lymphocytes ; Male ; Necrobiotic Disorders ; Skin ; Skin Diseases

Acute Febrile Neetrophilic Dermatosis(AFND, Sweet's syndrome) ia characterixed by painful erythematous plaquea aaaociatcd with arthralgia, fever and leukocytoeis, We preagented a case of acute febrice neutrophilie denmatoeis in acutemyelogenous leukemia which occurred in a 55-year-old man. After 10 days of treatment with prednisolone, the skin lesion disapceared, but he die of pneumonia in spite of anticancer therapy.
Arthralgia ; Fever ; Humans ; Leukemia ; Leukemia, Myeloid, Acute* ; Middle Aged ; Pneumonia ; Prednisolone ; Skin ; Sweet Syndrome*

No abstract available.
Animals ; Liver* ; Rats*

No abstract available.
Lipomatosis*

The involvement of mucosal mast cells (MMC) in the pathophysiology of irritable bowel syndrome (IBS) is still controversial. We aimed to re-evaluate the role of MMC in visceral hypersensitivity associated with IBS using a rat IBS model that develops the IBS symptom after a subsidence of acetic acid-induced colitis. No significant difference in the number of MMC was observed between normal rat colon and IBS rat colon. (61.7 +/-2.9/mm 2 in normal vs. 88.7 +/-13.3/mm 2 in IBS, p >0.29). However, the degranulation rate of MMC was significantly higher in IBS rat colon (49.5 +/-2.4% in normal vs. 68.8 +/-3.4% in IBS, p >0.05). Pretreatment of a mast cell stabilizer, doxantrazole (5 mg/kg, i.p.), reduced the degranulation rate of MMC and significantly attenuated visceral hypersensitivity to rectal distension in IBS rat, whereas it had no effect on the visceral sensory responses in normal rat. These results suggest that, although the number of MMC is not significantly changed in IBS rat colon, the higher degranulation rate of MMC is responsible for visceral hypersensitivity in this model IBS.
Acetic Acid/toxicity ; Animals ; Cell Count ; Colitis/chemically induced/*pathology ; Hypersensitivity/*pathology ; Image Processing, Computer-Assisted ; Intestinal Mucosa/*pathology ; Irritable Bowel Syndrome/*pathology ; Male ; Mast Cells/drug effects/*pathology ; Models, Theoretical ; Phosphodiesterase Inhibitors/pharmacology ; Rats ; Rats, Sprague-Dawley ; Thioxanthenes/pharmacology ; Viscera/immunology ; Xanthones/pharmacology

Malignant fibrous histiocytoma, which is interesting because of its pleomorphic nature, is a rare soft tissue sarcoma possibly arising from histiocyte. The tumors are usually situated in the skin or subcutaneous tissues, especially of the extremities, but they may also involve deeper structures, such as the retroperitoneum or genital organs. Herin we report a case of malignant fibrous histiocytoma in the retroperitoneal space and discuss the pathologic and clinical features.
Extremities ; Genitalia ; Histiocytes ; Histiocytoma, Benign Fibrous ; Histiocytoma, Malignant Fibrous* ; Retroperitoneal Space ; Sarcoma ; Skin ; Subcutaneous Tissue

No abstract available.
Carcinoma, Papillary*