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B Porcellini

Publications and source records attributed to B Porcellini.

7 recordsLinked to original sources
PubMed1999

Anatomy and surface geometry of the patellofemoral joint in the axial plane.

We studied the anatomy of the patellofemoral joint in the axial plane on cryosections from a cadaver knee and on MR arthrotomograms from 30 patients. The cryosections revealed differences in the geometry and anatomy of the surface of the articular cartilage and corresponding subchondral osseous contours of the patellofemoral joint. On the MR arthrotomograms the surface geometry of the cartilage matched the osseous contour of the patella in only four of the 30 knees. The articular cartilaginous surface of the intercondylar sulcus and corresponding osseous contour of the femoral trochlea matched in only seven knees. Since MR arthrotomography can distinguish between the surface geometry of the articular cartilage and subchondral osseous anatomy of the patellofemoral joint, it allows the surgeon and the radiologist to appraise the true articulating surfaces. We therefore recommend MR arthrotomography as the imaging technique of choice.

Adult↗
PubMed1995

Neoplastic invasion of the laryngeal cartilage: comparison of MR imaging and CT with histopathologic correlation.

PURPOSE: To compare the usefulness of computed tomography (CT) and gadolinium-enhanced magnetic resonance (MR) imaging in the detection of neoplastic invasion of laryngeal cartilage. MATERIALS AND METHODS: In a prospective study, 53 patients with carcinoma of the larynx or piriform sinus underwent CT and MR imaging before total or partial laryngectomy. The findings at imaging and pathologic examination were compared. RESULTS: At histologic examination, neoplastic invasion of cartilage was present in 34 patients and absent in 19. MR imaging was more sensitive than CT (89% vs 66%; P = .001). Inflammatory changes and fibrosis, however, were indistinguishable from tumor on MR images, resulting in overestimation of neoplastic invasion in a large number of patients. Therefore, MR imaging was less specific than CT (84% vs 94%; P = .004). CONCLUSION: MR imaging is more sensitive than CT in detecting neoplastic invasion of cartilage, but the inability to differentiate between nonneoplastic inflammatory changes and tumor with MR imaging leads to overestimation of neoplastic invasion.

Carcinoma, Squamous Cell↗
PubMed1987

Patterns of recurrence of esophageal carcinoma after transhiatal esophagectomy and gastric interposition.

Serial barium and CT studies were performed for follow-up of 35 patients who had undergone transhiatal esophagectomy with gastric interposition for esophageal carcinoma. The results were compared with the clinical and pathologic findings. Thirteen patients (37%) were clinically and radiologically free of tumor recurrence after a mean observation period of 18 months. Twenty-one patients (60%) developed recurrent carcinoma within 12 months and one patient (3%) within 14 months. Thirteen patients were clinically asymptomatic when recurrence was detected radiologically. Recurrence was initially confined to the mediastinum in one-half of the patients, whereas the others already had distant metastases when recurrence first became evident. Because most of the recurrent lesions originated outside the interposed stomach, CT was more useful than barium studies in showing early recurrence. Radiologic follow-up including CT allows earlier detection of limited recurrent carcinoma after surgery and, thus, offers the possibility of appropriate additional palliative radiotherapy or chemotherapy.

Adenocarcinoma↗
PubMed1984

[Computed tomographic classification of acetabular fractures].

The contribution of computed tomography (CT) in classifying acetabular fractures was analysed retrospectively in 33 cases. CT and plain radiography classification agreed in 27 cases (82%). CT revealed more extensive fractures in 6 patients (thereof 5 patients with associated fractures). In 10 patients (thereof 9 patients with associated fractures) CT showed intraarticular fragments; radiographically intraarticular fragments were seen only in 2 patients and suspected in 4. CT is of considerable aid in defining the fracture pattern. It should be used mainly in patients with radiographically difficult interpretable associated fractures in order to assess preoperatively the weight-bearing part of the acetabulum, the degree of displacement and the presence of intraarticular fragments.

Acetabulum↗
PubMedDate not supplied

CT evaluation of patients undergoing transhiatal esophagectomy for cancer.

Preoperative CT of 50 patients undergoing transhiatal esophagectomy for esophageal carcinoma was reviewed and compared with the surgical and histopathologic findings. Computed tomography was highly accurate in identifying those cases in which blunt esophagectomy was impossible owing to involvement of the airways or the aorta by the tumor. Preoperative detection of such involvement is important, because tumors of the upper thoracic esophagus are poorly visualized at transhiatal esophagectomy, and sharp or forced blunt dissection may result in accidental laceration of the trachea, mainstem bronchi, or aorta. In contrast, CT was of little value for guiding surgical management of tumors located in the middle thoracic and lower esophagus. Using the staging criteria of the International Union Against Cancer (UICC), the staging accuracy of CT was limited by its low sensitivity in detecting abdominal lymph node metastases.

Adenocarcinoma↗