abstract patella is a relative uncommon site for chondroblastoma. most of cases of chondroblastoma in patella reported in literature are treated with patellectomy. we treated a large chondroblastic lesion in patella of an 18- year-old male with curettage, burring & bone graft and the result was satisfactory after 3 years post operation.

background: pancreatic neuroendocrine neoplasms (pnens) are increasing in the world. the annual incidence of pnets is nearly 0.25 per 100 000 population. 1-2% of pancreatic neoplasms are pnens. materials and methods: this article reviewed the available original and review literatures which had been published in persian and english in websites of google scholar, iran doc and pub med with keyword...

Tumour involving the sinonasal tract account for only 1% of all malignancies. The large majority tumours affecting are mainly primary neoplasm or from direct extension adjacent region; metastatic tumour extremely rare. Most metastases originate carcinoma inferior to clavicle, including renal, breast, lung, and prostate. incidence sphenoid sinus even We describe a rare case FTC tract, mimicking ...

An 18-month-old Standardbred filly had a large intraocular tumor involving the optic nerve. The tumor was a malignant medulloepithelioma, a rare intraocular neoplasm derived from the primitive medullary epithelium. By light microscopy the tumor had cords and lobules of primitive neuroepithelial cells that formed clefts and true rosettes. Electron microscopy of the rosettes showed a girdle of zo...

Capillary thyroid carcinoma (PTC) is the most common neoplasm of thyroid. It usually grows slowly and is clinically indolent; although rare, its aggressive forms with local invasion or distant metastases can occur. Metastatic thyroid carcinoma rarely involves the orbit. We reported an uncommon case of orbital metastasis of PTC. A 66-years-old woman presented proptosis of the right eye. The biop...

UNLABELLED Kaposi sarcoma is a low-grade vascular neoplasm associated with Human Herpesvirus-8 (HHV8) infection. Although India has a large HIV infected population, Kaposi's sarcoma is rare and only 12 cases of AIDS related Kaposi's sarcoma from India have been reported in the published literature to our knowledge. The 50% of total cases in India has been reported from Mumbai. The incidence of ...

while ovarian masses are common findings in gynecology, unusually huge masses are quite rare. however, such cases can still be found today. mismanagement of common complaints in patients can be a leading cause of facing such findings. herein, we introduce a case of a giant ovarian cyst, which was mismanaged in a young virgin female patient. the patient had received gastrointestinal medications ...

Uveoretinitis was observed in a 9-year-old girl 6 months prior to the clinical appearance of a pineal tumour. Surgical removal was not successful but biopsy revealed a parenchymal neoplasm with differentiated pinealocytes and absent mitotic activity. Some of the tumour cells contained S-antigen, rhodopsin, and serotonin. Systemic glucocorticoid therapy followed by radiation therapy caused consi...

BACKGROUND Cavernous hemangiomas are rare tumors, mainly localized in the liver and skin, but also reported in the cerebellum and eye fundus as a part of von Hippel Lindau Syndrome. Adrenal hemangiomas are less than 1% of all the adrenal neoplasms and usually are reported as benign, non-functioning tumors, originating from the adrenal cortex and surrounded by normal or hyperplastic adrenal tiss...