Acinic cell carcinoma

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Acinic cell carcinoma
Classification and external resources
Acinic cell carcinoma - high mag.jpg
Micrograph of an acinic cell carcinoma (right of image) and acinar glands (parotid gland - left of image). H&E stain.
ICD-10 C07
ICD-9 142.0
ICD-O: M8550/3

Acinic cell carcinoma is a malignant tumor most commonly found in the parotid gland. The disease presents as a slow growing mass, sometimes associated with pain or tenderness.

These tumors which resemble serous acinar cells vary in their behavior from locally aggressive to blatantly malignant.

It can also appear in the breast. The pancreatic form of acinic cell carcinoma is a rare subtype of exocrine pancreatic cancer. Exocrine pancreatic cancers are the most common form of pancreatic cancer when compared to endocrine pancreatic cancer. [1]

Acinic cell carcinomas arise most frequently in the parotid gland. Other sites of primary tumors have included the submandibular gland and other major and minor salivary glands. There have been rare cases of primary tumors involving the parapharyngeal space and the sublingual gland. [2]

Epidemiology[edit]

Acinic cell carcinoma appears in all age groups, but presents at a younger median age (approx. 52 years) than most other salivary gland cancers. Occurrences in children are quite common. [2]

Acinic cell carcinoma of the lung[edit]

Acinic cell carcinoma of the lung is a very rare variant of lung cancer that, in this organ, is classified among the salivary gland-like carcinoma of the lung. Fewer than 1% of malignancies beginning in the lower respiratory tract are acinic cell carcinomas.[3]

Prognosis[edit]

Prognosis is good for acinic cell carcinoma of the parotid gland, with five-year survival rates approaching is 90%, and 20-year survival exceeding 50%.

The prognosis of an acinic cell carcinoma originating in the lung is much more guarded than cases of this rare histotype occurring in most other organs, but is still considerably better than for other types of lung cancer.[3]

Treatment[edit]

a) Surgical resection is mainstay of treatment, whenever possible. If tumor is completely removed, post-operative radiation therapy is typically not needed since acinic cell is considered a low-grade histology. Post-operative radiation therapy for acinic cell carcinoma is used if: 1) margins are positive, 2) incomplete resection, 3) tumor invades beyond gland, 4) positive lymph nodes. b) Neutron beam radiation c) Conventional radiation d) Chemotherapy [2]

Additional images[edit]

References[edit]

  1. ^ Coyne JD, Dervan PA (July 2002). "Primary acinic cell carcinoma of the breast". J. Clin. Pathol. 55 (7): 545–7. doi:10.1136/jcp.55.7.545. PMC 1769684. PMID 12101208. 
  2. ^ a b c "Acinic Cell Carcinoma Overview." Acinic Cell Carcinoma Information Center. Web. 07 Dec. 2009. <http://www.aciniccell.org/overview.html>.
  3. ^ a b Travis, William D; Brambilla, Elisabeth; Muller-Hermelink, H Konrad; Harris, Curtis C, eds. (2004). Pathology and Genetics of Tumours of the Lung, Pleura, Thymus and Heart. World Health Organization Classification of Tumours. Lyon: IARC Press. ISBN 92-832-2418-3. Retrieved 27 March 2010. 


Further reading[edit]

  • Kahn, Michael A. Basic Oral and Maxillofacial Pathology. Volume 1. 2001.
  • Neville, Brad W. (2002). Oral & maxillofacial pathology (2nd ed.). Philadelphia: W.B. Saunders. ISBN 0-7216-9003-3.