Utilidad de la tomografía por emisión de positrones (PET) y biopsia del ganglio centinela (BGC) en el estadiaje cervical N0 del carcinoma epidermoide orofaríngeo / Usefulness of positron emission tomography (PET) and sentinel node biopsy (CNB) to determine the N0 cervical stage of oropharyngeal epidermoid carcinoma

- Introducción: con los métodos diagnósticos actuales, la determinación de metástasis cervicales ocultas (pN0) de carcinoma escamosos orofaríngeo resulta sumamente dificultoso.- Objetivos: el empleo de una nueva técnica diagnóstica evitará la realización innecesaria de disecciones cervicales.- Técnica: proponemos la realización de la identificación mediante linfogammagrafía del ganglio centinela, su posterior evaluación histopatológica y la realización de la tomografía por emisión de positrones (PET) en la evaluación de metástasis cervicales ocultas (pN0) (AU)

[Controversial aspects of verrucous carcinoma of the larynx: viral etiology, diagnosis and treatment]. / Aspectos controvertidos del carcinoma verrucoso de laringe: etiología viral, diagnóstico y tratamiento.

Verrucous carcinoma is a clinical and pathological entity which was recognized only in recent years. The laryngologist and pathologist must cooperate closely to formulate a correct diagnosis, because the microscopical findings may not show cytological criteria for malignancy, whereas the clinical behaviour is locally invasive. Suitable treatment remains controversial, as radiotherapy does not only control the tumour but may be followed by anaplastic transformation. There is increasing evidence of human papillomaviruses as etiologic agents, although further studies to determine their precise role in carcinogenesis are needed.

[Verruciform xanthoma of the penis]. / Xantoma verruciforme de pene.

A new case of penis verruciform xanthoma in a 28 years old patient with clinical suspicion of a pre-neoplasic condition is presented. Histology and ethiopathogenesis is commented upon, with special emphasis on differential diagnosis. Healing treatment is made through simple exeresis. The extreme rarity of this bening condition's presentation and location justifies publication since it represents one sixth of the reviewed literature.

[The problems posed by nasosinusal chondrosarcoma: a review of the literature and a case report]. / Problemas que plantea el condrosarcoma nasosinusal: revisión de la literatura y presentación de un caso.

Presenting the case of a massive chondrosarcoma arising from the nasal cavity. The related literature comprises less than 150 chondrosarcomas originated on the facial skeleton. The AA. discuss the protean manifestations of this kind of tumor and emphasize the aggressive therapy required. Correlation is made with the existing body of information regarding this entity.