scholarly journals Dosimetric validation of two different radiobiological models for parotid gland functionality of tongue cancer

2021 ◽  
Author(s):  
Srimanta Pramanik ◽  
Soumen Bera ◽  
Sanjoy Roy ◽  
Amitabh Ray ◽  
Sandip Sarkar ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Tongue Cancer ◽  
Radiobiological Models

SPECT-CT VISUALIZATION OF SENTINEL LYMPH NODES AND LYMPH FLOW FROM TONGUE CANCER

2019 ◽  
Vol 65 (2) ◽  
pp. 250-255
Author(s):  
Sergey Kanaev ◽  
Sergey Novikov ◽  
Pavel Krzhivitskiy ◽  
Zamira Radzhabova ◽  
Maksim Kotov ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Parotid Gland ◽  
Lymph Nodes ◽  
Treatment Planning ◽  
Tongue Cancer ◽  
Primary Tumour ◽  
Sentinel Lymph Nodes ◽  
Lymph Flow ◽  
Radiotherapy Planning ◽  
Radiation Fields

The main purpose of the study was to determine distribution of sentinel lymph nodes in patients with tongue cancer. SPECT-CT visualization of sentinel lymph nodes was performed in 19 primary patients with clinically T1-2N0M0 tongue cancer. SPECT-CT acquisition started 60-120 min after peritumoral injections of 99mTc-nannocolloids (100-150MBq in 0.3-0.4ml). Finally we analyzed lymph flow patterns and localization of lymph nodes with radiocolloids uptake. Bilateral lymph flow from the tongue cancer was detected in 9 (47%) of 19 patients. In 6 cases bilateral pattern was associated with tumors less than 5mm from medial sulcus of the tongue. On the contrary, in 9 of 10 patients with lesions more than 4mm from medial sulcus we detected monolateral lymph-flow. In 4 (21%) of 19 patients SPECT-CT visualized sentinel lymph nodes only in groups Ib-IIa. Modeling of radiotherapy with with standard and lymph-flow guided radiation fields was performed on Eclips treatment planning station. It demonstrated that with lymph-flow guided strategy irradiated volumes can be reduced from 1224 cm3 to 367 cm3, dose to spinal cord can be reduced from 24,7Gy to 14.3Gy, medial dose to contralateral parotid gland - from 24,6Gy to 12,4 Gy. SPECT-CT with radiocolloids can be successfully used for visualization of lymph flow from the primary tumour and subsequent radiotherapy planning.

scholarly journals Two cases of adenolymphoma in the lower end of the parotid gland with suspected metastasis of tongue cancer to the lymph nodes.

1996 ◽  
Vol 42 (3) ◽  
pp. 290-292 ◽  
Author(s):  
Hirotaka UENO ◽  
Tadayoshi KANEKO ◽  
Jun ISHII ◽  
Hiroyuki WATANABE ◽  
Masato WATANABE ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Lymph Nodes ◽  
Tongue Cancer

Ultrastructure of the Parotid Gland of the Nine-Banded Armadillo

1977 ◽  
Vol 35 ◽  
pp. 640-641
Author(s):  
J. R. Ruby
Keyword(s):  
Endoplasmic Reticulum ◽  
Parotid Gland ◽  
Periodic Acid ◽  
Acinar Cells ◽  
Duct System ◽  
Parotid Glands ◽  
Dasypus Novemcinctus ◽  
Anterior Portion ◽  
Periodic Acid Schiff ◽  
Thin Sections

Parotid glands were obtained from five adult (four male and one female) armadillos (Dasypus novemcinctus) which were perfusion-fixed. The glands were located in a position similar to that of most mammals. They extended interiorly to the anterior portion of the submandibular gland.In the light microscope, it was noted that the acini were relatively small and stained strongly positive with the periodic acid-Schiff (PAS) and alcian blue techniques, confirming the earlier results of Shackleford (1). Based on these qualities and other structural criteria, these cells have been classified as seromucous (2). The duct system was well developed. There were numerous intercalated ducts and intralobular striated ducts. The striated duct cells contained large amounts of PAS-positive substance.Thin sections revealed that the acinar cells were pyramidal in shape and contained a basally placed, slightly flattened nucleus (Fig. 1). The rough endoplasmic reticulum was also at the base of the cell.

Ultrastructure of myoepithelial cell in parotid gland

1988 ◽  
Vol 46 ◽  
pp. 342-343
Author(s):  
C. N. Sun
Keyword(s):  
Parotid Gland ◽  
Osmium Tetroxide ◽  
Individual Cell ◽  
Branching Processes ◽  
Muscle Cells ◽  
Myoepithelial Cells ◽  
Uranyl Acetate ◽  
Thin Sections ◽  
Gland Carcinoma ◽  
Parotid Gland Carcinoma

Myoepithelial cells have been observed in the prostate, harderian, apocrine, exocrine sweat and mammary glands. Such cells and their numerous branching processes form basket-like structures around the glandular acini. Their shapes are quite different from structures seen either in spindleshaped smooth muscle cells or skeletal muscle cells. These myoepithelial cells lie on the epithelial side of the basement membrane in the glands. This presentation describes the ultrastructure of such myoepithelial cells which have been found also in the parotid gland carcinoma from a 45-year old patient.Specimens were cut into small pieces about 1 mm3 and immediately fixed in 4 percent glutaraldehyde in phosphate buffer for two hours, then post-fixed in 1 percent buffered osmium tetroxide for 1 hour. After dehydration, tissues were embedded in Epon 812. Thin sections were stained with uranyl acetate and lead citrate. Ultrastructurally, the pattern of each individual cell showed wide variations.

MR-Elastography of the Parotid Gland: Feasibility and First Experiences

2006 ◽  
Vol 177 (01) ◽  
Author(s):  
CR Habermann ◽  
R Sinkus ◽  
A Albrecht ◽  
MC Cramer ◽  
F Weiss ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Mr Elastography

A Case of Sclerosing Polycystic Adenosis of Parotid Gland

2014 ◽  
Vol 57 (8) ◽  
pp. 559
Author(s):  
Young-Jun Kim ◽  
Jang-Won Choi ◽  
Young-Joong Kim ◽  
Soo-Kweon Koo
Keyword(s):  
Parotid Gland
Sign in / Sign up

Export Citation Format

Share Document