[Synovial sarcoma in a patient with metal-on-polyethylene total hip replacement. A case report].

We present the case of a synovial sarcoma five years after primary total hip arthroplasty in a male 65 year-old patient who was surgically treated for left hip pain due to coxarthrosis. A 32 mm uncemented prosthesis with metal-on-polyethylene tribology was placed in the patient. The latter developed synovial sarcoma that caused lung metastasis.

[Scintigraphy with 99mTc-MIBI for assessment of tumor response to preoperative chemotherapy in patients with osteosarcoma].

In osteogenic sarcoma an increase in patient survival has been observed due to improvement of diagnostic and treatment methods. The objective of the investigation was to determine the usefulness of scintigraphy with 99mTc-MIBI in comparison to clinical revaluation, in order to assess tumor response (sarcoma) to chemotherapy previous to surgery. Patients with histopathological osteogenic sarcoma that received chemotherapy were included, clinical and scintigraphy response was assessed previous to the surgery.

Patterns of recurrence in squamous cell carcinoma of the anal canal.

The objective of the study was to identify the patterns of recurrence in patients with squamous cell carcinoma of the anal canal (SCCAC) vs. the size of the primary tumor and its further possible impact on its treatment outcome. We reviewed 78 patients treated between 1975 to 1991.

[Dermatomyositis and adenosquamous carcinoma of the ovary. Report of a case].

A case of adenosquamous ovarian carcinoma in a 50 years old female is reported. The patient had marked improvement of her symptoms after resection of the tumor and chemotherapy. The knowledge of this association forces to rule out an ovarian carcinoma.