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Luis Junquera

Publications and source records attributed to Luis Junquera.

9 recordsLinked to original sources
PubMed2005

Complete spontaneous regression of Merkel cell carcinoma.

Merkel cell carcinoma (MCC) is a very aggressive primary cutaneous neoplasm most often occurring on the head and neck of the elderly. Spontaneous regression of MCC was first described in 1986. A 79-year-old woman with MCC on the right cheek underwent spontaneous regression of the malignancy, documented by photographic follow-up, computed tomography, and histologic studies. A review of the literature is presented. Complete clinical and histologic regression of MCC was observed in the present case. Although the literature documents 11 similar cases, only 6 can be regarded as complete spontaneous regressions following exclusive performance of a biopsy (primary complete spontaneous regression). Primary complete spontaneous regression of MCC is infrequent, and most case reports describe this phenomenon in women with MCC on the cheek. The reasons underlying regression are unknown.

Aged↗
PubMed2003

Ameloblastoma revisited.

Ameloblastoma is a benign but locally aggressive neoplasm of the odontogenic epithelium, the treatment of which is controversial. A review was made of 22 patients treated for histologically diagnosed ameloblastoma between January 1975 and January 2000. We recorded data relating to patient sex, age, site of involvement, histologic type, surgical treatment, and number of recurrences. All ameloblastomas were located in the mandible. The most common histologic patterns were follicular and plexiform lesions. A total of 22.7% of the tumors were unicystic ameloblastomas. Unicystic lesions were seen to affect younger patients than the rest of the histologic types. Eighteen patients were initially treated in our center, and 4 cases were referred to our center for secondary treatment. The number of recurrences was significantly lower in patients initially treated in our center. Primary treatment comprised enucleation and bone curettage in 10 cases and radical surgery in 7. Forty percent of the unicystic lesions and 53.3% of the non-unicystic ameloblastomas of our study presented at least 1 recurrence. Ameloblastoma is a polymorphic neoplasm for which the treatment is conditioned by a number of clinical and histologic factors. An individualized preoperative study is essential for treatment.

Adult↗
PubMedDate not supplied

Autosomal dominant osteopetrosis and maxillomandibular osteomyelitis.

Osteopetroses represent a heterogeneous group of rare, hereditary bony dysplasias. They range from a devastating neurometabolic disease (including severe malignant infantile osteopetrosis) to 2 more benign conditions principally affecting adults: autosomal dominant osteopetrosis (ADO) type I and type II. The present study describes the maxillofacial manifestations associated with the 2 subgroups of ADO. In this paper, we present the oldest patient described in the literature with ADO type I (76 years old). We also document the first ADO type II patient described in the literature with synchronic osteomyelitis of the mandible and the maxilla.

Aged↗
PubMedDate not supplied

Hepatocellular carcinoma metastatic to the mandible: a case involving severe hemorrhage.

Hepatocellular carcinoma (HCC) is quite uncommon in Europe and USA, although in this last country more than 13,000 new cases are diagnosed every year. Mandibular metastases are unusual, with only 50 cases documented. In this article, we present a 54 year-old male patient with a metastasis of HCC in right mandibular body, one year after treating the primary tumor. Curettage and biopsy of the lesion was performed, followed by a profuse hemorrhage. The patient expired six months after the biopsy, with multiple metastases. We describe the different paths for hematogenic dissemination of the process.

Carcinoma, Hepatocellular↗
PubMedDate not supplied

Intraosseous odontoma erupted into the oral cavity: an unusual pathology.

OBJECTIVES: Odontoma arising in the extraosseous soft tissue is extremely uncommon. Two forms of odontoma are presently recognized: peripheral odontoma and erupted odontoma. We report an erupted odontoma arising in the posterior maxilla, and discuss the main differences between both forms of clinical presentation. STUDY DESIGN: Case study. RESULTS: A 23-year-old man presented with a firm gingival mass on the left posterior maxilla, that had gradually enlarged over one year. Orthopantomography showed a dense radiopaque mass occupying the posterior portion of the left maxilla. The pathology was reported as complex odontoma. CONCLUSIONS: This is the eleventh reported case of erupted odontoma. Unlike peripheral odontoma, erupted odontoma is generally a complex odontoma, and affects older patients.

Adult↗