1/3. Inverted papilloma arising in a juvenile.A 15-year-old man presented with painless, gross hematuria. Excretory pyelography showed a filling defect in the bladder and ultrasonography revealed a solitary bladder tumor. cystoscopy showed a solitary, papillary tumor on the bladder neck. Transurethral resection was then performed and histological examination showed an inverted papilloma. In addition, the expression of proliferative cellular nuclear antigen and p53 in the surgical specimen were 37.1 and 0%, respectively. Since an inverted papilloma arising during the first two decades of life is quite rare, we herein report the above case and review previous reports.- - - - - - - - - - ranking = 1keywords = antigen (Clic here for more details about this article) |
2/3. Inverted papilloma of the nasal cavity presenting with massive amounts of squamous metaplastic cells in sputum. A case report.BACKGROUND: Squamous metaplasic cells are rarely seen in sputum of female nonsmokers. CASE: A 47-year-old female nonsmoker presented with massive amounts of squamous metaplasic cells in sputum and an elevated level of squamous cell carcinoma (SCC) antigen in serum present for months, while no causative lesion was detected either by lung computed tomography or bronchoscopy. The patient was eventually diagnosed as having inverted papilloma in the right nasal cavity. Resection of the tumor brought about disappearance of squamous metaplastic cells in sputum and return of serum SCC antigen to the normal range. CONCLUSION: This case clearly demonstrates that squamous metaplastic cells in sputum can originate in lesions in the nasal cavity, although they are rare. It should be kept in mind that the nasal cavity is a potential site producing squamous metaplastic cells in sputum.- - - - - - - - - - ranking = 2keywords = antigen (Clic here for more details about this article) |
3/3. Inverted papilloma of the urinary bladder: a case evaluated for malignant potential.We report a case of inverted papilloma in the urinary bladder with special reference to its malignant potential. A 77-year-old male patient complaining of microhaematuria was subjected to cystoscopic examination, which showed a non-papillary pedunculated tumour at the postero-lateral wall, and was treated with transurethral resection. The histological findings of the specimen were compatible with inverted papilloma of the urinary bladder, except for the presence of low grade dysplastic changes in the tumour nuclei. We revealed the malignant potential of this tumour, analyzing and evaluating nuclear dna content, proliferating cell nuclear antigen (PCNA) as well as p53 expression.- - - - - - - - - - ranking = 1keywords = antigen (Clic here for more details about this article) |