CARCINOMA EX SEROUS CYSTADENOMA Figure 4-30 CARCINOMA EX SEROUS CYSTADENOMA There are regions resembling a benign microcystic serous cystadenoma, with variably sized cysts and glands lined by cytologically bland cells (A), alternating with nests and sheets of polygonal clear cells with enlarged n... More about this image found in CARCINOMA EX SEROUS CYSTADENOMA There are regions resembling a benign micr...

CHRONIC PANCREATITIS Figure 7-14 CHRONIC PANCREATITIS A benign gland approaches, but does not involve, a nerve. More about this image found in CHRONIC PANCREATITIS A benign gland approaches, but does not involve, a ne...

CHRONIC PANCREATITIS Figure 7-15 CHRONIC PANCREATITIS Extremely rare examples of benign glands encroaching upon (left) or within (right) nerves. More about this image found in CHRONIC PANCREATITIS Extremely rare examples of benign glands encroaching ...

DUCTAL ADENOCARCINOMA Figure 7-17 DUCTAL ADENOCARCINOMA Carcinoma involves an islet of Langerhans. Benign glands can also be seen in islets of Langerhans, and this feature is therefore not diagnostic of carcinoma. More about this image found in DUCTAL ADENOCARCINOMA Carcinoma involves an islet of Langerhans. Benign gl...

SEROUS CYSTADENOCARCINOMA Figure 4-29 SEROUS CYSTADENOCARCINOMA A metastasis in the liver is histologically indistinguishable from a benign microcystic serous cystadenoma. More about this image found in SEROUS CYSTADENOCARCINOMA A metastasis in the liver is histologically indi...

MATURE CYSTIC TERATOMA Figure 13-43 MATURE CYSTIC TERATOMA In this example, respiratory epithelium overlies mature cartilage at the bottom and smooth muscle at the top. Benign pancreatic parenchyma is at the top. More about this image found in MATURE CYSTIC TERATOMA In this example, respiratory epithelium overlies ma...

SEROUS MICROCYSTIC CYSTADENOMA Figure 4-26 SEROUS MICROCYSTIC CYSTADENOMA The individual cells are bland and obviously benign appearing, with even chromatin and absent or inconspicuous nucleoli. The cytoplasm may be finely vacuolated but mucin vacuoles are absent (direct smear; Papanicolaou). More about this image found in SEROUS MICROCYSTIC CYSTADENOMA The individual cells are bland and obviousl...

NON-NEOPLASTIC ACINAR CELLS AND ACINAR CELL CARCINOMA Figure 9-28 NON-NEOPLASTIC ACINAR CELLS AND ACINAR CELL CARCINOMA Neoplastic acinar cells have hyperchromatic chromatin and high nuclear: cytoplasmic ratio (left). On the right, cytoplasmic granularity is decreased in acinar cell carcinoma and... More about this image found in NON-NEOPLASTIC ACINAR CELLS AND ACINAR CELL CARCINOMA Neoplastic acinar ce...

ENDOCERVICOSIS Figure 4-26 ENDOCERVICOSIS Benign mucinous glands involve pelvic tissues such as the bladder, vagina, and outer cervical wall. In this example, the lesion was identified in an excisional sample from the pelvic side wall. More about this image found in ENDOCERVICOSIS Benign mucinous glands involve pelvic tissues such as the b...

ANGIOMYOFIBROBLASTOMA Figure 5-65 ANGIOMYOFIBROBLASTOMA Left: This benign tumor characteristically shows alternating zones of cellularity and a rich capillary vascular component. Right: The neoplastic cells are spindled to epithelioid, tend to cluster around the vessels, and are set within a col... More about this image found in ANGIOMYOFIBROBLASTOMA Left: This benign tumor characteristically shows alt...

DIFFUSE LAMINAR ENDOCERVICAL HYPERPLASIA Figure 3-82 DIFFUSE LAMINAR ENDOCERVICAL HYPERPLASIA Left: The superficial cervical stroma contains a band-like proliferation of closely packed benign endocervical glands. Right: The glands are lined by banal endocervical-type epithelium. Inflammation and... More about this image found in DIFFUSE LAMINAR ENDOCERVICAL HYPERPLASIA Left: The superficial cervical st...

DEEP ENDOCERVICAL GLANDS AND ENDOCERVICOSIS Figure 3-88 DEEP ENDOCERVICAL GLANDS AND ENDOCERVICOSIS Left: Deep endocervical glands are present in the outer half of the cervical wall, as in this example; they are well-formed and lined by simple mucinous epithelium. Right: In endocervicosis, well-... More about this image found in DEEP ENDOCERVICAL GLANDS AND ENDOCERVICOSIS Left: Deep endocervical glands...

TUNNEL CLUSTERS Figure 3-80 TUNNEL CLUSTERS A: Markedly crowded endocervical glands/crypts are organized in relatively well-defined groups or “clusters.” B: The glands, which are often cystically dilated, are lined by benign simple mucinous epithelium. C: Rarely, cytologic atypia in the form of... More about this image found in TUNNEL CLUSTERS A: Markedly crowded endocervical glands/crypts are organiz...

SMARCB1-DEFICIENT TUMOR Figure 5-77 SMARCB1-DEFICIENT TUMOR A: Lesions that fall into the spectrum of proximal-type epithelioid sarcoma are typically infiltrative (see tumor interface with underlying adipose tissue), sometimes with a vague nodular appearance. B: The tumor cells are predominantly... More about this image found in SMARCB1-DEFICIENT TUMOR A: Lesions that fall into the spectrum of proximal...