RESUMO
Occurrence of clear cell carcinoma of the prostate is exceedingly rare and presents a diagnostic dilemma. We describe a case of a 47-year-old male nonsmoker, who presented with a history of frequency, dribbling urination, and dysuria for 6 months. In a digital rectal exam, enlarged prostate with a hard consistency was identified. All results for hematological and biochemical tests were normal. Also, the serum prostate-specific antigen (PSA) level was 2.7 ng/mL (within normal range). Open prostatectomy was done and the result showed a 300 g specimen, and a histopathological examination revealed clear cell carcinoma. A computerized tomography scan and ultrasound did not show any mass in the kidneys, but three nodules in both lungs in favor of metastasis were identified. Three months after surgery, a PET scan revealed hyperactivity in the abdominal wall, pelvic lymph nodes, and lung fields in favor of metastasis; thereafter, systemic therapy with tyrosine kinase inhibitor was prescribed. To the best of our knowledge, clear cell carcinoma of the prostate has been reported very rarely.
RESUMO
Primary pulmonary mucinous cystic neoplasm is a rare tumor and there are only a few case reports in the English literature. Herein we report a very unusual multifocal pulmonary mucinous neoplasm. Microscopic sections revealed ovarian type stroma which was diffusely positive for estrogen receptor, same as its pancreaticobiliary counterpart. To the best of our knowledge such a presentation of pulmonary mucinous neoplasm has not been previously reported in the English literature.
