Giant cell tumor of the maxilla

@#OBJECTIVE/strong: To present a rare case of maxillary swelling; its investigation and management.br /br /strongMETHODS/strong:br /strongDesign/strong: Case Report br /strongSetting/strong: Tertiary Government Teaching Hospital br /strongPatient/strong: One br /br /strongRESULTS/strong: A 45-year-old female presented with a right maxillary swelling of six months duration. Radiological investigation revealed a radiolucent lesion arising from the inferior aspect of the right maxilla with no areas of calcification. Incisional biopsy report was consistent with giant cell tumor. The mass was excised via a Weber Ferguson incision under general anesthesia.CONCLUSION/strong: Though rare, giant cell tumor should be considered as one of the differential diagnosis in cases of maxillary swelling. Adequate surgical excision with long-term follow-up should be the treatment of choice for managing a giant cell lesion of the maxilla./p

Inverted papilloma: a clinico-pathological dilemma with special reference to recurrence and malignant transformation.

To study the clinicopathological profile, recurrence and malignant potential of the inverted papilloma of nose and paranasal sinuses in relation to the definitive diagnosis and the management undertaken. A total number of 52 cases of histologically proven inverted papilloma managed in our department of otolaryngology over a 10-year period (May 1998-April 2008) were followed up (until October 2009) and the results were analyzed retrospectively to find out any incidence of recurrence of these tumours. A total of 52 inverted papilloma cases were managed with different surgical interventions. Male:female ratio was found to be 10:1. The mean follow up period was 74 months (range 16 months-11 years). Recurrence was observed in 20 (38%) cases. 23% had recurrence without any specific histological pattern, 12% had recurrence with focal dysplasia and 4% had recurrence with malignant transformation into squamous cell carcinoma (SCC). Post-operative radiotherapy was given to 8% (four cases) with malignant transformation. The management of inverted papilloma depends on its size and extension. Recurrence can be minimized by an appropriate surgical planning. Careful endoscopic assessment is essential to detect early recurrence. Recurrent inverted papilloma should be treated more aggressively. Malignant transformation in inverted papilloma should be managed like any aggressive sino-nasal malignancy.

Malignant melanoma of vagina--a case report.

Malignant melanoma of vagina called mucosal lentigenous melanomas are extremely malignant. Malignant malanoma is a very rare tumour, it accounts for less than 3% of malignant tumours of vagina. Vaginal malanomas are aggressive and according to some authors they are less suitable for radical excision. Therefore wide local excision may be preferred. Multidisciplinary treatment modalities are required for more advanced lesions particularly in patients who have vaginal melanoma lesion more than 4 mm (AJCC stage IIB) in depth and high risk group.

Primary pleomorphic sarcoma of the ovary with rhabdomyosarcomatous differentiation.

A 49-year-old patient presented with a right ovarian mass, which, on microscopy, showed to consist of haphazardly oriented large pleomorphic cells with abundant cytoplasm. Periodic acid Schiff stain was positive but negative with diastase digestion. Immunohistochemical staining with Desmin showed intense cytoplasmic positivity in almost all the cells. Cytokeratin, epithelial membrane antigen, smooth muscle actin, HMB-45, S-100 and neurone-specific enolase were negative. Immunohistochemical staining with Myogenin showed intense nuclear positivity. There was no other primary tumor on extensive search. A diagnosis of primary sarcoma of the ovary with rhabdomyosarcomatous differentiation was made. The incidence of similar tumors of the ovary are low and therefore little data are available on this uniformly lethal tumor. Thus, such cases need to be reported to pool experience so that the tumor can be diagnosed early.

Infantile hemangioendothelioma of liver: report of two cases.

Infantile hemangioendothelioma, the commonest mesenchymal tumour of liver in infancy, though benign in nature, may behave aggressively. Here reports of two such cases are presented. Both were girls and less than 1-year old. Grossly, they presented with nodular hepatic masses with features of heart failure. Histopathology of both liver masses showed intercommunicating bloodvessels, lined by single layer of plump endothelial cells showing CD-34 positivity by immunohistochemistry. Entrapped biliary channels within tumour mass showed cytokeratin positivity.

Expression of cytokeratins in gliomas.

Metastatic carcinoma, which is a common malignant tumor seen in the central nervous system is often difficult to distinguish from glioblastoma multiforme. In general, neoplastic cells maintain fidelity in the expression of parent cell intermediate filament and immunohistochemistry remains the mainstay in diagnosis. A panel consisting of GFAP (usually positive for astrocytic tumors) and cytokeratin (usually positive for metastatic carcinomas) is most commonly used for this purpose. However, co-expression of two or more classes of intermediate filament proteins by neoplasms is a widespread phenomenon and there are reports of glial neoplasms expressing keratin markers. Our aims and objectives were to analyse the expression of both cytokeratin and GFAP in different glial tumors and metastatic carcinomas. Cases were collected for a period of two years. All the cases were diagnosed as primary or metastatic intracranial tumors. Formalin-fixed paraffin-embedded thin sections were taken on egg-albumin coated slides and immunostaining with GFAP and polyclonal cytokeratin was done. Forty-five tumors were analysed, including 35 glial neoplasms and 10 metastatic carcinomas of which 7 of the 32 astrocytic neoplasms (22%) showed focal immunoreactivity with pancytokeratin. All of the glial tumors but none of the metastatic carcinomas were positive with GFAP. So our conclusion was that co-expression of GFAP and CK is a fairly common phenomenon, especially in case of undifferentiated and high grade gliomas and this must be kept in mind while differentiating these cases from metastatic carcinoma, as CK positivity does not rule out the diagnosis of a glial neoplasm. Further studies with an expanded panel of CK is most useful for this.