Acinus

(redirected from acinic)
Also found in: Dictionary, Thesaurus, Medical.
Related to acinic: Acinic cell carcinoma

acinus

[′as·ə·nəs]
(anatomy)
The small terminal sac of an acinous gland, lined with secreting cells.
(botany)
An individual drupelet of a multiple fruit.

Acinus

 

(1) A structural and functional unit or the terminal secretory portion of the salivary, pancreatic, lacteal, sebaceous, or other saccular (alveolar) glands. The acinus is a bubble-like formation of one or more types of gland cells situated on a basement membrane and surrounded by connective tissue, capillaries, and nerve fibers. The apexes of the cells with their microvilli are directed toward the chamber of the acinus into which the secretion is discharged.

(2) A part of the respiratory apparatus in mammals that includes a section of the lung corresponding to the branches of the terminal bronchus—that is, the bronchioles, alveolar passages, and alveoli. One pulmonary lobule consists of 12–18 acini.

References in periodicals archive ?
Other less frequent malignant tumours included acinic cell carcinoma, salivary duct carcinoma and non-Hodgkin lymphoma comprising of 3 cases (3.
Three false-negatives for malignancy (4%) were 2 monomorphic adenomas diagnosed as high-grade muco-epidermoid carcinoma and acinic cell carcinoma, and a benign cyst diagnosed as acinic cell carcinoma.
Acinic cell carcinoma constitute approximately 2-4% of all salivary gland neoplasms.
Acinic cell carcinoma of the parapharyngeal space: Case report.
The fact that MASC, like its breast counterpart, is associated with rearrangement of the ETV6 gene has been a great benefit in the early identification and characterization of this entity from morphologic mimickers (predominantly acinic cell carcinoma [AciCC] and adenocarcinoma, not otherwise specified), which has allowed a relatively quick and robust recognition of this entity.
The parotid acinic cell carcinoma in our patient seemed to be unrelated to her generalized enchondromatosis.
Acinic cell carcinoma shows overlapping architectural features with MASC, (3,8) but it typically shows basophilic cytoplasm containing periodic acid-Schiff-positive zymogen granules ("blue dot tumor"; Figure 2).
Non odontogenic tumor with clear cell feature include Acinic cell carcinoma, squamous cell ca with clear cell, clear cell oncocytoma, glycogen rich salivary tumor, hyalinising clear cell carcinoma, sebaceous cell tumor, epithelial myoepithelial ca, clear cell variant of adenocarcinoma of salivary gland tumor.
Eneroth reported that 80 to 90% of all malignant lesions of the salivary glands in children were mucoepidermoid, adenoid cystic, or acinic cell carcinomas; the corresponding figure in adults was only 45%.
c) Malignant Salivary Gland neoplasm: Acinic cell carcinoma.
Acinic cell carcinoma (AcCC) is a malignant epithelial salivary gland neoplasm that demonstrates serous acinar cell differentiation with cytoplasmic zymogen secretory granules.
Specimen Diagnosis Review Diagnosis 1 Biopsy Mucoepidermoid Acinic cell carcinoma carcinoma Table 5.