Biomedical subjects

R M DeMay

Publications and source records attributed to R M DeMay.

23 records · Page 2Linked to original sources

PubMedDate not supplied

Fine needle aspiration cytology of the oxyphil variant of papillary carcinoma of the thyroid. A report of three cases.

BACKGROUND: A number of histologic variants of papillary carcinoma of the thyroid have been described, including an oxyphil cell subtype (OVPC). Few OVPC cases have been detailed cytologically. CASES: Smears prepared from aspiration biopsies, as well as the corresponding histologic sections and clinical histories, were reviewed for three cases. Two patients had asymptomatic thyroid tumors, and the third developed neck tumors after thyroid cancer surgery. All smears revealed scattered papillary groups and monolayered sheets. The large, neoplastic cells had abundant, granular cytoplasm and eccentrically placed nuclei. Nuclear grooves and intranuclear inclusions were variably present. Psammoma bodies and colloid were not identified. Histologically the tumors consisted predominantly of oxyphil cells arranged in papillary patterns and with nuclear features of usual papillary carcinoma (UPC). CONCLUSION: OVPC can be diagnosed in smears composed predominantly of large oxyphil cells but showing features associated with UPC and can be cytologically distinguished from follicular oxyphilic tumors and UPC.

Aged↗

PubMedDate not supplied

Percutaneous transperitoneal aspiration of renal adenocarcinoma guided by ultrasound. Morphologic appearance of normal and malignant cells.

An aspiration guided by ultrasound of a clear cell renal adenocarcinoma provided abundant, well-preserved material. Surgical specimens of the granular and sarcomatoid (spindle cell) varieties of renal adenocarcinoma were aspirated with the same gauge needle as that of the Chiba University. The cytomorphologic appearances of these entities are described.

Adenocarcinoma↗

PubMedDate not supplied

Signet-ring-cell (colloid) carcinoma of the urinary bladder. Cytologic, histologic and ultrastructural findings in one case.

A 65-year-old female presented with a one-and-a-half-year history of intermittent, painless, gross hematuria. She was found to have a large bladder neoplasm. A cytologic diagnosis of signet-ring-cell (colloid) carcinoma was made on a bladder washing and was confirmed histologically by a cystoscopic biopsy. Subsequently, a radical cystectomy was performed. The cytologic findings of this rare pure signet-ring-cell carcinoma of the bladder, not previously described, are presented along with the histologic and ultrastructural findings.

Adenocarcinoma, Mucinous↗

PubMedDate not supplied

Percutaneous transperitoneal aspiration of pancreas guided by ultrasound: morphologic and cytochemical appearance of normal and malignant cells.

A pancreatic aspirate was obtained by fine needle biopsy guided by ultrasound in a patient clinically suspected of having a pancreatic malignancy. The cytomorphologic features of well-differentiated adenocarcinoma are described and illustrated. Comparison is made between the carcinoma and normal pancreatic cells. PAS-Trichrome stain is described as a useful cytochemical technique to properly identify normal acinar and islet cells.

Adenocarcinoma↗

PubMedDate not supplied

Uterine Müllerian adenosarcoma with psammoma bodies: cytologic, histologic and ultrastructural studies of a case.

Epithelial cells associated with psammoma bodies and undifferentiated sarcomatous tumor cells were found in peritoneal washings obtained during laparotomy for removal of metastatic lesions from a uterine stromal sarcoma. Histologic studies of the primary and recurrent tumors showed characteristics of Müllerian adenosarcoma. The cytologic, histologic and ultrastructural features are described.

Adult↗