MICROSCOPIC FEATURES The glans of uncircumcised patients is lined by a 6- to 10-cell layer of nonkeratinizing to slightly keratinized squamous epithelium (Fig. 48.4). Lamina propria is 2 to 3…

Microscopically, the prostate is composed of glandular epithelium and fibromuscular stroma. The duct and glandular system is arranged in a complex architectural pattern. The ducts consist of elongated branching tubular…

RECOGNITION OF PSEUDOSARCOMAS Table 5.2 lists the lesions that mimic sarcomas. Knowledge of the histologic appearance of these lesions is critical to prevent incorrect diagnoses of sarcoma. The following discussion…

The superior one-third of the nasal septum, the superior turbinate, and the cribriform plate are covered with thinner olfactory mucosa. The latter develops at the embryonic stage from the respiratory…

HISTOLOGY Both the major and minor salivary glands possess acinar and ductal systems. These glands may be of the serous, mucous, or mixed seromucous type. The parotid gland and Ebner…

Infections. Herpes simplex virus (HSV) and Chlamydia trachomatis cause characteristic histologic findings, whereas Trichomonas vaginalis and Neisseria gonorrhoeae do not (2). HSV infections of the anogenital region are more commonly…

The design of most bone marrow biopsy needles is similar and the principle and technique for using them is basically the same (6). Needles with various-sized lumina are available, including…

Clinical Features Colonoscopic studies have reported the following incidence of endoscopically removed polyps: HPs (23.8% to 29%), SSA/P (2.2% to 9.0%), TSA (0.7% to 1.9%), and traditional adenoma (59% to…

Ideally, all patients with suspected bone tumors should be discussed in multidisciplinary team meetings, including the radiologist and pathologist involved in the diagnosis and the (orthopedic) surgeon and oncologist involved…

Microscopic Features. At low-power, several patterns may be encountered, and typically two or more are present in the same tumor (Figs. 55.4 to 55.9). The most common is a diffuse…