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Uterine tumors resembling ovarian sex cord tumors are rare neoplasms with varied histological and immunophenotypic profile, uncertain histiogenesis and biological behavior. A critical evaluation of histological features is essential for diagnosis and management of these cases.
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Ameloblastoma is a benign tumour of odontogenic epithelial origin with several histological variants comprising of follicular, plexiform, acanthomatous, desmoplastic, granular cell and basal cell types. Basal cell ameloblastoma (BCA) is the rarest histologic subtype in which the tumour is composed of numerous odontogenic epithelial islands supported by fibrous connective tissue stroma. It exhibits variations in the clinical course and histological features compared with the classic type of ameloblastoma. Till date, only 11 cases of BCA have been reported in the literature. Considering the rarity of the lesion, we report here a unique case of BCA occurring in the 8th decade with review of the literature of this rare variant.
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ObjectiveTo understand the clinical and histopathologic diagnostic criteria for aneurysmal fibrous histiocytoma(AFH).MethodsThe clinical and histopathological features of 5 patients with AFH were retrospectively reviewed.ResultsThere were 3 males and 2 females in these patients.All the tumors clinically manifested as dark erythematous or brown nodules.Three cases had a recent history of rapid growth.The lesions were located on the limbs(n =3),or chest and lower mandible(n =2).Histopathological examination of skin biopsies showed typical features of dermatofibroma,accompanied by many irregular cleftlikeorcavernousblood-filledspaceswithnumeroushemosiderinpigmentsinallofthesecases.Immunohistochemically,the tumor cells were immunoreactive to vimentin and CD68 but negative for CD34 or CD31.Conclusions In view of a history of recent rapid growth,the presence of hemorrhagic pseudocysts and high vascularity,AFH should be differentiated from angiosarcoma and angiomatoid fibrous histiocytoma.
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In this article we first report the original plant morphology of padicularis decora, Its histological features of the root, diagnostic characters of the Crude drug and the identification tests of physical chemistry. It is clear that our vesearch also provides the basis for the appraisal of the new resources of medicinal herbs.