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Bronchioloalveolar carcinoma

 

 
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Bronchioloalveolar carcinoma
 
 
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Bronchioloalveolar carcinoma (BAC) is a rare type of lung cancer
Lung cancer

Lung cancer is a disease of uncontrolled cell growth in tissue of the lung. This growth may lead to metastasis, which is the invasion of adjacent tissue and infiltration beyond the lungs....
. It occurs more frequently among never-smokers, women and Asians.

By definition, BAC is not an invasive tumor. Therefore, pathologists
Surgical pathology

Surgical pathology is the most significant and time-consuming area of practice for most anatomical pathology. Surgical pathology involves the gross and microscopic examination of surgery specimens, as well as biopsy submitted by non-surgeons such as internal medicine, internal medicine, dermatologists, and interventional radiologists....
 classify it as a form of carcinoma in situ
Carcinoma in situ

Carcinoma in situ is an early form of carcinoma defined by the absence of invasion of surrounding tissues. In other words, the neoplasm proliferate in their normal habitat, hence the name 'in situ' ....
 (CIS). However, unlike other forms of CIS, its behavior is malignant
Malignant

Malignant is a medical term used to describe a severe and progressively worsening disease. The term is most familiar as a description of cancer....
, often lethal. Major surgery, either a lobectomy
Lobectomy

Lobectomy means surgical excision of a lobe. This may refer to a lobe of the lung, a lobe of the thyroid or a lobe of the brain .A lobectomy is performed in early stage non-small cell lung cancer patients....
 or a pneumonectomy
Pneumonectomy

A pneumonectomy is a surgery procedure to remove a lung. Removal of just one lobe of the lung is specifically referred to as a lobectomy , and that of a segment of the lung as a wedge resection ....
, is needed to control it, and recurrences are frequent. For this reason, oncologists
Oncology

Oncology is the branch of medicine that studies tumors . A medical professional who practices oncology is an oncologist. The term originates from the Greek onkos , meaning bulk, mass, or tumor and the suffix -logy, meaning "study of"....
 classify it among the other malignant tumors, which are invasive tumors
Cancer

Cancer is a class of diseases in which a group of cell display uncontrolled growth , invasion , and sometimes metastasis . These three malignant properties of cancers differentiate them from benign tumors, which are self-limited, do not invade or metastasize....
.

Classification
Bronchioloalveolar carcinoma is a sub-type of lung adenocarcinoma
Lung cancer

Lung cancer is a disease of uncontrolled cell growth in tissue of the lung. This growth may lead to metastasis, which is the invasion of adjacent tissue and infiltration beyond the lungs....
.






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Encyclopedia


Bronchioloalveolar carcinoma (BAC) is a rare type of lung cancer
Lung cancer

Lung cancer is a disease of uncontrolled cell growth in tissue of the lung. This growth may lead to metastasis, which is the invasion of adjacent tissue and infiltration beyond the lungs....
. It occurs more frequently among never-smokers, women and Asians.

By definition, BAC is not an invasive tumor. Therefore, pathologists
Surgical pathology

Surgical pathology is the most significant and time-consuming area of practice for most anatomical pathology. Surgical pathology involves the gross and microscopic examination of surgery specimens, as well as biopsy submitted by non-surgeons such as internal medicine, internal medicine, dermatologists, and interventional radiologists....
 classify it as a form of carcinoma in situ
Carcinoma in situ

Carcinoma in situ is an early form of carcinoma defined by the absence of invasion of surrounding tissues. In other words, the neoplasm proliferate in their normal habitat, hence the name 'in situ' ....
 (CIS). However, unlike other forms of CIS, its behavior is malignant
Malignant

Malignant is a medical term used to describe a severe and progressively worsening disease. The term is most familiar as a description of cancer....
, often lethal. Major surgery, either a lobectomy
Lobectomy

Lobectomy means surgical excision of a lobe. This may refer to a lobe of the lung, a lobe of the thyroid or a lobe of the brain .A lobectomy is performed in early stage non-small cell lung cancer patients....
 or a pneumonectomy
Pneumonectomy

A pneumonectomy is a surgery procedure to remove a lung. Removal of just one lobe of the lung is specifically referred to as a lobectomy , and that of a segment of the lung as a wedge resection ....
, is needed to control it, and recurrences are frequent. For this reason, oncologists
Oncology

Oncology is the branch of medicine that studies tumors . A medical professional who practices oncology is an oncologist. The term originates from the Greek onkos , meaning bulk, mass, or tumor and the suffix -logy, meaning "study of"....
 classify it among the other malignant tumors, which are invasive tumors
Cancer

Cancer is a class of diseases in which a group of cell display uncontrolled growth , invasion , and sometimes metastasis . These three malignant properties of cancers differentiate them from benign tumors, which are self-limited, do not invade or metastasize....
.

Classification


Bronchioloalveolar carcinoma is a sub-type of lung adenocarcinoma
Lung cancer

Lung cancer is a disease of uncontrolled cell growth in tissue of the lung. This growth may lead to metastasis, which is the invasion of adjacent tissue and infiltration beyond the lungs....
. However it is distinct from other lung adenocarcinomas by different clinical features, prognosis and response to treatment.

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