ObjectiveTo investigate the clinical features, differential diagnosis and treatment for chromophobe cell renal carcinoma (CRCC) and renal oncocytoma. MethodsFrom December 2009 to May 2013, we selected 41 cases of CRCC and 22 cases of renal oncocytoma, retrospectively analyzed their clinical features, ultrasonography and CT findings and performed immunohistochemical staining for CK7, CD10, PAX-2, and Ksp-cadherin. ResultsCRCC could be associated with lower back pain or hematuria, and renal oncocytoma generally did not have clinical symptoms. Ultrasonography and CT examination were not specific for the differentiation between the two diseases. The expression rates of CK7, CD10, PAX-2, and Ksp-cadherin in CRCC were 66% (21/32), 22% (7/32), 23% (3/13) and 93% (14/15), respectively. In patients with oncocytoma, 7% (1/15) were positive for CK7, 7% (1/15) were positive for CD10, 86% (13/15) were positive for PAX-2, and 31% (4/13) were positive for Ksp-cadherin. Pearson chi-square analysis was performed with a significant P value set at <0.05. The results of CK7(-)CD10(-)PAX-2(+) and CK7(-)CD10(-)Ksp-cadherin(-) immunohistochemistry were integrated, which also showed the differences. ConclusionThe combination of CK7(-)CD10(-)PAX-2(+) and CK7(-)CD10(-)Ksp-cadherin(-) immunohistochemistry may be useful for differentiating between CRCC and oncocytoma. Combined with imaging examination, it can further improve the differential diagnosis of the two diseases.
ObjectiveTo investigate the clinical features, diagnosis, therapeutic methods of Paget's disease involving the scrotum. MethodsThe clinical data of 18 patients with Paget's disease treated in our hospital between 2008 and 2013 involving the scrotum were analyzed retrospectively. The patients' age ranged from 55 to 81 years old with an average of 69. The disease course ranged from 9 months to 18 years, averaging 6 years and 3 months. The main clinical pr was itching (94.4%), followed by exudation (66.7%), pain (11.1%), and desquamation (5.6%). All patients underwent extended resection. ResultsThe patients were followed up for 8 to 52 months averaging 34 months. Four patients' postoperative pathological report found focus on the excision margin, and one of them had local recurrence after 14 months. The remaining 14 cases had no local recurrence. One patient's pathological findings reported Paget's disease combined with invasive adenocarcinoma which invaded subcutaneous fat tissue layer, and this patient developed inguinal lymph node metastasis 20 months after operation. Another patient combined with adenocarcinoma which invaded deep dermis layer developed liver and lung metastasis 18 months after operation. ConclusionPaget's disease involving the scrotum is more commonly seen in older patients, and its main clinical presentation is itching. Paget's disease is usually misdiagnosed, so patients should undergo pathological examination early to clear diagnosis. Surgery is the main treatment. Paget's disease combined with invasive adenocarcinoma has poor prognosis.