Episodes of recurrent pneumonia in the same lung field should prompt evaluation for a possible foreign body in the airway.Whether or not the foreign body is removed, complications such as chemical bronchitis, mucosal reactions, and the development of granulation tissue are possible.Complications can also arise from interventions used to remove a foreign body from the airway. Rigid bronchoscopy is the gold standard for removal of a foreign body, however this intervention does have potential risks. The most common complication from rigid bronchoscopy is damage to the patients teeth. Other less common complications include cuts to the mouth or esophagus, perforation of the bronchial tree, damage to the vocal cords, pneumothorax, atelectasis, stricture, and perforation. Prevention

There are many factors to consider when determining how to decrease the likelihood of aspiration, especially in the extremely young and elderly populations.The major considerations in children are their developmental level in terms of swallowing and protecting their airway via mechanisms such as coughing and the gag reflex. Also, certain object characteristics such as size, shape, and material can increase their potential to cause choking among children. When there are multiple children in a shared environment, toys and foods that are acceptable for older children often pose a choking risk to the younger children. Education for parents and caretakers should continue to be prioritized when possible. This can be through positions such as pediatricians, dentists, and school teachers as well as media advertisements and printed materials.
A thyroid adenoma is a benign tumor of the thyroid gland, that may be inactive or active (functioning autonomously) as a toxic adenoma. Signs and symptoms
A thyroid adenoma may be clinically silent ("cold" adenoma), or it may be a functional tumor, producing excessive thyroid hormone ("warm" or "hot" adenoma). In this case, it may result in symptomatic hyperthyroidism, and may be referred to as a toxic thyroid adenoma. Diagnosis
Morphology
Thyroid follicular adenoma ranges in diameter from  3 cm on an average, but sometimes is larger (up to 10 cm) or smaller. The typical thyroid adenoma is solitary, spherical and encapsulated lesion that is well demarcated from the surrounding parenchyma. The color ranges from gray-white to red-brown, depending upon

the cellularity of the adenoma
the colloid content.Areas of hemorrhage, fibrosis, calcification, and cystic change, similar to what is found in multinodular goiters, are common in thyroid (follicular) adenoma, particularly in larger lesions. Types
Almost all thyroid adenomata are follicular adenomata. Follicular adenomata can be described as "cold", "warm" or "hot" depending on their level of function. Histopathologically, follicular adenomata can be classified according to their cellular architecture and relative amounts of cellularity and colloid into the following types:

Fetal (microfollicular) - these have the potential for microinvasion. These consist of small, closely packed follicles lined with epithelium. Colloid (macrofollicular) - these do not have any potential for microinvasion
Embryonal (atypical) - have the potential for microinvasion. Hürthle cell adenoma (oxyphil or oncocytic tumor) - have the potential for microinvasion. Hyalinizing trabecular adenomaPapillary adenomata are very rare.