Metastasis of renal clear-cell carcinoma to the oral mucosa, an atypical location.

The majority of cases of metastatic tumors involve the mandible and some the maxilla but they are considerably less common in intraoral soft tissues. In addition, the primary tumor is known in the majority of cases; although in one-third of such cases, metastasis is the first clinical manifestation. The most common primary tumors metastasizing to the mouth are lung carcinoma in men and breast carcinoma in women.

Costochondral graft with green-stick fracture used in reconstruction of the mandibular condyle: experience in 13 clinical cases.

Since its publication in 1920 by Gillies, costochondral grafts have been used by surgeons to replace and injured mandibular condyle and to reconstruct the temporomandibular joint. This procedure is currently applied in cases of congenital dysplasia, developmental defects, temporomandibular ankylosis, neoplastic disease, osteoarthritis and post-traumatic dysfunction. Over the years, various procedures for the reconstruction with this type of graft have been described.

Amyloidosis of the submaxillary gland.

Amyloidosis can be defined as an extracellular deposit of the amyloid fibrillar protein in one or more locations in the organism. Multiple clinical and biochemical forms of amyloid exist, and are characterized according to their fibrillar structural characteristics. The Red Congo stain presents green fluorescence when histologic cuts are observed by polarized light.