@entity8523 presenting as a solitary lip XXXX : case report and review of the literature.

@entity1 @entity662 @entity353 @entity1353 @entity5 @entity649 @entity448 @entity8523 @entity1897 @entity358 @entity3 @entity221
@entity8523 ( @entity8523 ) is an uncommon primary @entity358 . This @entity5 was first described by Barrett and Barnard in 1945. The @entity5 is composed of immature epithelial and mesenchymal tissues which may recapitulate early embryological lung development. Under the microscope, the globular component resembles immature bronchus and connective tissue as seen in embryonic lung. More than one hundred cases have been reported in the literature. @entity8523 is more frequent in older @entity1 and in males and tends to affect blacks at younger ages. Symptomatology varies from asymptomatic to symptoms of a non-specific @entity358 . Cough, hemoptysis, @entity1353 , @entity662 , @entity649 , @entity221 , @entity448 and @entity353 are the most common presenting features. The most common roentgenologic pattern is a well-demarcated @entity1897 , encapsulated by compression or atelectatic lung tissue, although in some cases there is a tendency to lobulation and cavitation. The size of the mass varies from a small peripheral nodule to a mass occupying the entire lobe or hemithorax. The treatment of choice has been surgical excision, radiation and, in selected cases, a combination of chemotherapy with radiation. The prognosis of this malignancy is poor; overall five-year survival is approximately 16 percent. No correlation has been established between histopathologic criteria and survival. The factors that indicate poor prognosis are @entity5 recurrence, @entity3 at initial presentation, @entity5 size over 5 cm and lymph node @entity3 . Liver, central nervous system and bones are the most frequent location of distant metastases. A rare case is presented of a @entity8523 with an upper lip @entity3 occurring in a paraplegic male. Diagnosis was confirmed by autopsy findings.(ABSTRACT TRUNCATED AT 250 WORDS)
