Osteitis in the dens of axis caused by Treponema pallidum.

Background: Syphilis has been referred to as "the great imitator" due to its ability to imitate other diseases. Untreated syphilis becomes a systemic infection that can involve almost every organ systems. Treponema pallidum has a high affinity for bone tissue, but osteitis has mainly been described in late stages of the disease.

Accuracy of frozen section diagnosis: a retrospective analysis of 4785 cases.

During a 1-year period 4785 intraoperative consultations were performed. The pathology reports were retrospectively reviewed to determine the accuracy of frozen section diagnosis in various tissue types. Skin for evaluation of section margins and axillary sentinel lymph nodes for evaluation of metastatic disease were most frequently sent for frozen section diagnosis.

Primary cardiac tumors: a clinicopathologic evaluation of four cases.

Introduction: We report the clinical, pathological, and immunohistochemical features of four primary malignant cardiac tumors identified at the Department of Pathology, Rigshospitalet, Denmark. A panel of immunohistochemical markers for classification is proposed.

Methods: Between 2000 and 2008, four patients with malignant cardiac tumors were treated at our hospital.