A Comparative Study of Intraoperative Cytology and Frozen Sections of Sclerosing Pneumocytoma.

Sclerosing pneumocytoma (SP) is a rare benign neoplasm of the lung. Conservative surgical excision is curative with an excellent prognosis. Preoperative diagnosis of SP can be difficult.

Cytodiagnostic aspects of lung adenocarcinoma manifesting with micropapillary pattern in sputum: a case report of potential diagnostic pitfall.

The micropapillary pattern of lung adenocarcinoma was discussed in the 2004 World Health Organization classification and is now proposed as a distinct pattern in the new International Multidisciplinary Classification of Lung Adenocarcinoma Guidelines. The micropapillary pattern is histologically characterized by papillary tufts lacking a central fibrovascular core and is associated with an unfavorable prognosis. Herein, we report the cytological features of lung adenocarcinoma with the micropapillary pattern in a sputum specimen.

Langerhans Cell Sarcoma in a Chronic Myelogenous Leukemia Patient Undergoing Imatinib Mesylate Therapy: A Case Study and Review of the Literature.

Langerhans cell sarcoma (LCS) is a rare malignancy requiring differential diagnosis from other high-grade nonhematologic and hematologic tumors. The pathogenesis of LCS remains unknown. Notably, LCS and its benign counterpart, Langerhans cell histiocytosis (LCH), are frequently associated with other malignancies.