Surgical procedures for primary, metastatic or adjacent parotid tumours.

OBJECTIVE: The retrospective analysis of the surgical procedures in primary parotid and metastatic or adjacent parotid tumors. PATIENTS AND METHODS: Retrospective review of the records of 145 patients operated on for primary, metastatic or adjacent parotid tumors revealed 85 patients with benign tumors, 24 with primary malignant tumors, 19 with squamous skin carcinomas, 12 with skin melanomas, 3 with basocellular carcinomas and 2 with sarcomas of the parotid region. The analysis included the type of parotidectomy, the need for facial nerve sacrifice (FNS), type of neck dissection and soft part reconstruction. RESULTS: Superficial parotidectomy was performed in 81% of the benign parotid tumors and 100% of skin melanomas. Total parotidectomy was frequent in malignant parotid tumors (62%), epidermoid skin tumors (64%) and in basocellular/sarcomas of the parotid region (80%). Skin graft or flaps was infrequent in primary malignant tumors (12.5%), and frequent in epidermoid skin tumors (74%), melanomas (58%) and basocellular/sarcomas (100%). FNS was necessary in primary malignant (25%), adjacent epidermoid (37%), melanomas (17%) and basocellular/sarcomas (80%). Details on neck dissections are provided. CONCLUSIONS: Superficial parotidectomy was an adequate procedure for most benign parotid tumors and for melanoma patients. In primary malignant and adjacent or metastatic skin tumors, total parotidectomy, neck dissection and soft part reconstruction were frequent procedures. FNS and soft part reconstruction should be anticipated more frequently in squamous/basocellular skin tumors or sarcomas adjacent to the parotid gland.

Treatment of locally aggressive well-differentiated thyroid cancer.

The object of this study, conducted at Unicamp between 1988 and 1998, was to evaluate retrospectively the outcome of patients treated for locally aggressive well-differentiated thyroid carcinomas (LATC). Nineteen (42%) of 45 patients with thyroid carcinomas were considered to have LATC. The preoperative diagnosis of carcinoma was made either by fine needle aspiration biopsy (15 patients) or during surgery (4 patients). The usual prognostic factors were analyzed and classified according to risk groups. Survival was evaluated using the Kaplan-Meier method. Most of the patients were female (73%), with a mean age of 48 years. Eighteen (95%) had papillary carcinomas. Four patients were classified as high risk (21%) and the remaining 15 (79%) as intermediate risk. All patients underwent total thyroidectomy and different types of neck dissections. The structures invaded by tumors were strap muscles and trachea (four cases); recurrent nerve and larynx (three cases); manubrium, esophagus, and jugular vein (two cases); and hyoid bone and pharynx (one case). Complete tumor resection was carried out according to the extent of local invasion; no postoperative deaths resulted. Details of the procedures are provided in Table 4 and in the Discussion. Postoperative radioactive iodine treatment was used in 15 patients (79%). A mean follow-up (+/-7 years) revealed 13 (68%) patients without disease, 4 patients (21%) alive with controlled systemic disease, and 2 (11%) deaths from distant metastasis. The Kaplan-Meir survival curve was comparable with other studies in the literature. This study found that the frequency of LATC (42%) was higher than in most studies. Aggressive surgical therapy to treat these tumors is compatible with a low recurrence rate and long-term survival in a significant proportion of patients.

Papillary carcinoma in a thyroglossal duct: case report.

CONTEXT: Thyroglossal duct cysts are the most common congenital cervical abnormality in childhood. Malignant lesions are rare in thyroglossal duct cysts (about 1%). OBJECTIVE: To report a case of papillary carcinoma in thyroglossal duct cysts. DESIGN: Case report. CASE REPORT: The patient was a 21-year-old female with a four-month history of an anterior midline neck mass but without other symptoms. The physical examination revealed a 4.0 cm diameter, smooth, painless, cystic nodule at the level of the hyoid bone. The thyroid gland was normal by palpation and no neck lymph nodes were found. Indirect laryngoscopy, fine-needle biopsy aspiration and cervical ultrasound were normal and compatible with the physical findings of a thyroglossal duct cyst. The patient underwent surgery with this diagnosis, under general anesthesia, and the mass was resected by the usual Sistrunk procedure. There were no local signs of invasion of the tissue surrounding the cyst or duct at surgery. The patient was discharged within 24 hours. Histopathological examination of the specimen showed a 3.5 x 3.0 x 3.0 cm thyroglossal cyst, partially filled by a solid 1.0 x 0.5 cm brownish tissue. Histological sections showed a papillary carcinoma in the thyroid tissue of a thyroglossal cyst, with normal thyroid tissue at the boundary of the carcinoma. There was no capsule invasion and the margins were negative. The follow-up of the patient consisted of head and neck examinations, ultrasonography of the surgical region and thyroid, and total body scintigraphy. The patient has been followed up for two years with no further evidence of disease.

Parapharyngeal space tumors: considerations in 26 cases.

CONTEXT: Parapharyngeal space tumors comprise less than 0.5% of all head and neck neoplasms. The majority of these tumors are benign, but surgery is usually required to establish the diagnosis and treat the patients. We present 26 patients treated surgically for tumors arising in the parapharyngeal space (PPS) at the State University of Campinas Hospital--UNICAMP. CASES SERIES: Of these, 17 (65.5%) had benign and 9 (34.6%) malignant neoplasms. The surgical and pathological data relevant to these cases are highlighted, observing any local recurrence, surgical complications and the five-year survival. Neurogenic tumors and soft tissue sarcomas were, respectively, the most frequent benign (35.3%) and malignant neoplasms (44.5%). Benign tumors accounted for the majority of the cases and involved minimal surgical morbidity with no recurrence during a median follow-up of five years. Malignant tumors had a high rate of recurrence and mortality. Surgery is the treatment of choice for PPS tumors. A knowledge of the anatomy of this site is essential for the safe performance of surgical procedures. Malignant neoplasms have a poor prognosis. Fine needle aspiration was helpful in diagnosis of all tumors.

Use of omentum pedicled graft to protect great vessels in gastric transposition for pharyngoesophageal cancer.

BACKGROUND AND OBJECTIVES: Transmediastinal gastric transposition and pharyngogastric anastomosis is perhaps one of the most widely accepted methods for restoration of the alimentary continuity after pharyngoesophageal resection. The need of neck dissection, mediastinal tracheostomy, and previous radiotherapy may favor exposure and rupture of major vessels. Protection with omentum may prevent this complication. A comprehensive review of omentum flap use in surgery was undertaken. METHODS: A modified omentum pedicled flap was used in 6 out of 36 patients submitted to total pharyngolaryngoesophagectomy and gastric transposition (PLE>). RESULTS: None of the patients had major vessel rupture as compared with a 13% carotid and innominate artery rupture of a series of 30 patients previously operated on without omentum pedicled flap protection. CONCLUSIONS: The omental pedicled flap, performed as described, may provide reliable protection for carotid and innominate artery exposure, adding little time to the procedure.

Diagnosis of superficial esophageal cancer and dysplasia using endoscopic screening with a 2% lugol dye solution in patients with head and neck cancer.

BACKGROUND: Head and neck cancer (HNC) has a high incidence in Brazil, with cancer of the oral cavity being one of the five most common cancers among Brazilians. Alcohol and tobacco consumption may contribute to synchronous or metachronous HNC and esophageal cancer. The early detection of superficial esophageal cancer and dysplasia in asymptomatic patients with HNC, after successfully treating the primary cancer, may provide an effective cure. METHODS: A prospective study involving 60 patients with HNC was carried out at the State University of Campinas (UNICAMP) to screen for superficial esophageal cancer and dysplasia using endoscopy and a 2% lugol dye solution followed by biopsy of the suspicious areas. RESULTS: Five patients (8.3%) had superficial esophageal cancer, which was diagnosed as intraepithelial carcinoma in three of them (5.0%). In four patients, the superficial esophageal cancer was synchronous, and in one it was metachronous to HNC. Five patients (8.3%) had dysplasias in the esophageal epithelium (three were classified as mild and two as moderate). CONCLUSION: These results demonstrate the value of endoscopic screening of the esophagus using lugol dye in patients with HNC, particularly because superficial esophageal cancer is extremely difficult to detect by conventional methods in asymptomatic patients.