Gallbladder, Extrahepatic Biliary Tree, and Ampulla
The mucosal layer is thrown into variably sized branching folds, which are more prominent when the organ is contracted. The surface epithelium consists of a single layer of tall columnar…
Prostate and Seminal Vesicles
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…
Soft Tissues
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…
Nose, Paranasal Sinuses, and Nasopharynx
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…
Salivary Glands
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…
Bone Marrow
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…
Intestinal Neoplasms
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…
Bone Tumors
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…
