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Supracricoid partial laryngectomy (SCPL) has been performed in selected patients with transglottic carcinoma of larynx who are not amenable to classically conservative Partial laryngectomy. We have applied this procedure for the complete removal of carcinoma and the satisfactory recovery of function in 74 supraglottic laryngeal cancer Patient with thyroid cartilage invasion. The 65-year-old man with supraglottic squamous carcinoma with thyroid cartilage invasion (74 stage) was treated by SCPL with bilateral lateral neck dissection. The part of larynx and whole thyroid cartilage with tumor invasion was completely removed with covering thyrohyoid muscle and fascia. External perichondrium of the thyroid cartilage containing carcinoma was not exposed from the overlying muscle and fascia on postoperative pathological examination. We confirmed the invasion of thyroid cartilage histopathologically. Tumor was confined in the specimen and the safety margin was proved in all direction. Postoperative course and functional results were uneventful. SCPL can be applied in selected cases of locally advanced 74 laryngeal cancer.
Dermoids are rare disease which arise during embryogenesis. They are the most common variety of teratomas occurring in the head and neck region and most arsies in the nasopharynx or oropharynx. They are invariably benign and derived from only two germinal layers, ectoderm and mesoderm. They usually present as repiratory distress and swallowing difficulty at or soon after birth. Treatment consists of surgical resection. We recently experienced a case of a neonatal nasopharyngeal dermoid which led to severe airway obstruction and feeding difficulty and necessitated the endotracheal intubation.
The Photodegradation efficient of total organic compounds in the drinking water has been studied using the methods of photocatalytic reaction and laser beam irradation. The results are summarized as follows; 1. The photodegradation efficiency of total organic compounds shows as 50% to 80% as within one hour and after this the efficiency is decreased slowly. 2. The photodegradation efficiency of total organic compounds shows as 65 to 90% within 3.3min. when Nd : YAG beam is irradiated to the water layer. 3. An excellent observation of the organic compound removal efficiency gives revealed in that case of the longest wavelength of 532nm is irradiated among the three kinds of laser beam sources of 532nm, 355nm and 266nm. 4. The organic compound removal efficiency shows high in the case of UV beam irradiation in the thin layer of water. However the efficiency is not depended on the thickness of water layer severely. 5. The removal efficiency of the organic compounds in the direct irradiation shows higher than the indirect irradiation in the case of UV beam, but the efficiency is not depended on the direction of irradiation in the case of Nd : YAG beam irradiation.
For many years it has been reported that seemingly benign neck cysts may contain carcinoma. Cystic metastases have often mistaken for either branchial cleft cysts or benign mass. Authors experienced two cases which presents cystic cervical metastatic cancer One was a tonsillar carcinoma and the other was a tongue carcinoma. Patients with a cystic squamous carcinoma in the neck likely have a primary in upper aero-digestive system and It is known that the tonsil is most common site. Radiologic examination and fine needle aspiration biopsy of the cyst proved to be non-diagnostic. The development of cervical lymph node metastases before clinical signs of carcinoma of the tonsil is also well recognized. So, in old patients, thorough head If neck examination, panendoscopy and ipsilateral tonsillectomy is mandatory to identify a primary carcinoma prior to cyst excision.