Cistite glandular associada à metaplasia intestinal com extravasamento de mucina

case report

Abstract

The bladder’s mucosa, in the presence of aggressive agents, undergoes initially benign changes, but with chronicity may undergo potentially metaplastic modifications. Glandular cystitis presents nonspecific symptoms and biopsy is necessary for diagnosis and histological differentiation, subdividing it into classic and intestinal subtypes. After analyzing a medical record belonging to the Santa Rita Hospital from Maringá, the objective of this study is to report the case of a 32-year-old male patient with dysuria and pain in the hypogastric region, presenting on ultrasonography cystic lesion of 3.8 cm of diameter in the bladder. After removal of the lesion by transurethral resection, the histopathological analysis revealed the presence of Von Brunn nests, areas of mucosecretory epithelium and extracellular mucin in the bladder’s mucosa, suggesting the existence of a glandular lesion with intestinal metaplasia. It was performed an immunohistochemical study for differential diagnosis of well-differentiated mucosecretory adenocarcinoma. Glandular cystitis, when manifested macroscopically, resembles a neoplasm, since it can present an irregular aspect, diffuse and sometimes ulcerous. The diagnosis and treatment can be simultaneous, but in severe cases, the therapeutic options are restricted. Differential diagnosis is extremely important to rule out the possibility of bladder adenocarcinoma, therefore it is essential to follow up patients after treatment with specific tests periodically. The use of immunohistochemical markers has become relevant for the correct diagnosis, since genes related to the cell cycle, such as caudal type homeobox transcription factor 2 (CDX2), may represent a link between the onset of metaplasia and its possible progression to adenocarcinoma.