Nonneoplastic Liver Disease
Blood draining from the gastrointestinal (GI) tract flows through the portal veins and eventually into terminal portal venules and then sinusoids, where it mixes with arterial blood (which enters the…
Adult Renal Diseases
TISSUE SAMPLING AND PREPARATION Renal tissue samples are usually obtained by percutaneous or open renal biopsy or by nephrectomy. The biopsy is divided for LM, IF, and EM. The specimen…
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…
