Adenolymphoma ; pathology ; Humans ; Parotid Gland ; pathology ; Parotid Neoplasms ; pathology ; Sebaceous Gland Neoplasms ; pathology

Aged ; Female ; Humans ; Leiomyosarcoma ; pathology ; Parotid Gland ; pathology ; Parotid Neoplasms ; pathology ; Retrospective Studies

OBJECTIVE: To investigate the imaging manifestations of 16-slice enhanced CT of parotid adenolymphoma in the parotid gland and the corresponding pathology,in order to improve the understanding of the CT imaging manifestations of parotid adenolymphoma in the parotid gland. METHOD: The enhanced CT characteristics of 34 cases of parotid adenolymphoma in the parotid gland confirmed by histological pathology were retrospectively analyzed. RESULT: There were totally 86 lesions in 34 cases, of which 12 cases with lesions in bilateral sides and 22 cases with lesions in unilateral side. Sixty-six lesions located behind and below the superficial lobe of the parotid gland. The lesions showed moderate to obvious enhancement at arterial phase, and the cystic region within the lesions showed no enhancement. CONCLUSION The relatively specific enhanced MSCT manifestations of parotid adenolymphoma in parotid gland include lesions located behind and below the superficial lobe of parotid gland unilaterally or bilaterally, sometimes exhibited as multiple masses, with clear edge, obvious enhancement and cystic degeneration inside.
Adenolymphoma ; diagnosis ; pathology ; Humans ; Parotid Gland ; pathology ; Parotid Neoplasms ; diagnosis ; pathology ; Tomography, X-Ray Computed

Adenocarcinoma, Sebaceous ; pathology ; Humans ; Male ; Middle Aged ; Parotid Neoplasms ; pathology

OBJECTIVE: To investigate the cause, genetics, clinical features, pathological mechanism, diagonosis and treatment of the Giant pleomorphic adenoma of the parotid gland (GPA). METHOD: A case of GPA was reported and relevant literatures were reviewed. RESULT: GPAs were more commonly found in elderly patients, duration of more than 10 years, with a possible malignant degeneration. CT scan shows uneven density, different degrees of enhancement and clear boundary. Pathological examination shows that the composition of tumor tissue are epitheli al cells, myoepithelial cells and mucus. CONCLUSION GPA is an uncommon disease and is associated with human factors. The diagnosis of GPA is oriented by medical history, physical examination and imaging tests. The total resection of the tumor and preservation of the facial nerve is an effective way for the treatment of GPA.
Adenoma, Pleomorphic ; pathology ; Female ; Humans ; Middle Aged ; Parotid Neoplasms ; pathology

Carcinoma ; complications ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; complications ; Parotid Gland ; pathology ; Parotid Neoplasms ; diagnosis ; secondary

OBJECTIVETo study the pathological characteristics of salivary malignant myoepithelioma with characteristic multinodular architecture.

METHODSTo observe the histologic and cytologic characteristics of 19 cases of de novo salivary malignant myoepithelioma with multinodular growth pattern. Immunohistochemistry of calponin, SMA, S-100, GFAP, cytokeratin, PCNA was done on 11 cases and ultrastructure was observed on 3 cases.

RESULTS19 tumors presented characteristic multinodular growth pattern, mostly accompanied by central necrosis. Neoplastic nests invaded the surrounding normal tissue and tumor cells displayed a variety of pleomorphism. Epitheliod cell was the most predominant cell type. Tumor-related extracellular matrix formation was revealed among tumor cells. Immunohistochemical staining demonstrated that the tumor cells were positive for calponin, SMA, S-100, GFAP, AE1/AE3, CKH and PCNA. Myofilaments were found in neoplastic cell cytoplasm under the electron microscope.

CONCLUSIONHistologic and cytologic observation, immunostaining and ultrastructural study all supported the myoepithelial and malignant nature of the tumor.

Diagnosis, Differential ; Humans ; Myoepithelioma ; diagnosis ; pathology ; Parotid Neoplasms ; diagnosis ; pathology ; Salivary Gland Neoplasms ; diagnosis ; pathology

Carcinosarcoma ; pathology ; Dendritic Cells, Follicular ; pathology ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Parotid Neoplasms ; pathology ; Sarcoma ; pathology

No abstract available.
Humans ; Lung Neoplasms/*secondary ; Male ; Mixed Tumor, Malignant/*pathology ; Parotid Neoplasms/*pathology

Aged ; Epiglottis ; pathology ; Female ; Humans ; Laryngeal Neoplasms ; secondary ; Neoplasm Metastasis ; Neoplasm Staging ; Parotid Neoplasms ; pathology