PubMed Health⌕ Search

Biomedical subjects

F Pombo

Publications and source records attributed to F Pombo.

At least 19 recordsLinked to original sources
PubMed2000

Colonic metastasis from renal cell carcinoma: helical-CT demonstration.

Clinically evident colonic metastasis from renal cell carcinoma (RCC) is rare. In the present study a hypervascular sigmoid mass was demonstrated on arterial-phase helical CT using a water enema in a patient who had suffered left nephrectomy 8 years previously for RCC. The intense and early enhancement of the lesion suggested the possibility of a solitary colonic metastasis from RCC, a diagnosis which was pathologically confirmed.

Aged↗
PubMed1999

Amyloidosis presenting as a perforated giant colonic diverticulum.

Colonic amyloidosis is frequent, although rarely radiographically evident. The radiological findings are varied and unspecific. We report a case of perforated giant colonic diverticulum (GCD) diagnosed by helical CT in which amyloid deposition was pathologically demonstrated. The patient was a renal transplant recipient who previously had undergone hemodialysis for 10 years. A possible role of amyloidosis in the pathogenesis of this case is discussed. Giant colonic diverticulum must be included in the spectrum of gastrointestinal manifestations of amyloidosis.

Aged↗
PubMed1998

Bilateral renal lymphangiomatosis: US and CT findings.

A case of bilateral renal lymphangiomatosis in an asymptomatic 50-year-old female is presented. Ultrasound and CT studies were performed. A finely septated fluid collection surrounding both kidneys and traversing the midline was found. Surgical biopsy was obtained and revealed findings compatible with lymphangiomatosis. A review of the literature of renal lymphangiomatosis is given.

Diagnosis, Differential↗
PubMed1998

Fibrosing mediastinitis: CT and MR findings.

The aim of this study is to present the computed tomography (CT) and magnetic resonance (MR) findings in three cases of fibrosing mediastinitis, probably secondary to tuberculosis. Two patients had diffuse involvement of the mediastinum and one patient presented with a posterior mediastinal mass. On CT, the patients with diffuse involvement showed infiltrating soft-tissue masses with multiple foci of dense calcifications. One of these lesions enhanced mildly with contrast and one did not enhance. On MR examination, diffuse masses were of heterogeneous, intermediate and low signal on T1-weighted images (n = 2) and were of homogeneous low signal (n = 1) or heterogeneous (n = 1) signal intensity on T2-weighted images. After administration of Gd-DTPA, these mediastinal masses showed heterogeneous enhancement. The posterior mediastinal mass showed homogeneous pronounced enhancement on CT and was homogeneous with intermediate T1 signal intensity and hypointense T2 signal intensity. The CT findings of an infiltrative or well-defined mediastinal mass with scattered calcifications should suggest the diagnosis of fibrosing mediastinitis in the appropriate clinical setting. Although the appearance of calcification on MR are not specific, this technique provides further information than CT especially in those cases in which the lesions appear noncalcified, because MR imaging revealed areas of low signal intensity characteristic of fibrous tissue.

Adult↗
PubMed1998

Elastofibroma dorsi: MR and CT findings.

Elastofibroma dorsi is a benign, pseudotumoral soft tissue lesion of the periscapular area. The characteristical findings in magnetic resonance images and computed tomography usually allow the diagnosis and prevent radical surgery. We report the MR and CT findings of elastofibroma dorsi in four women presenting as an elongated soft tissue mass intermingled with fat, between the ribs and the serratus muscle, deep to the inferior angle of the scapula.

Adult↗
PubMed1997

Cervical lymph node metastases of medullary thyroid carcinoma: CT findings.

Medullary thyroid carcinoma (MTC) is a rare malignancy which spreads frequently to cervical lymph nodes. We report the CT findings of MTC metastatic cervical adenopathies in two patients with previously resected MTC. The CT scans showed calcifications (one patient) and massive homogeneous postcontrast nodal enhancement. Medullary thyroid carcinoma should be included in the differential diagnosis of entities showing calcifications and intense homogeneous adenopathic enhancement on CT studies.

Aged↗
PubMed1997

CT-guided core-needle biopsy in omental pathology.

PURPOSE: To assess the accuracy and clinical usefulness of CT-guided core-needle biopsy in the diagnosis of omental pathology. MATERIAL AND METHODS: We retrospectively reviewed the results of CT-guided percutaneous core biopsies in 25 patients with focal (n = 2) or diffuse (n = 23) omental pathology. These results were compared to the final diagnoses as determined by laparotomy (n = 15), laparoscopic biopsy (n = 3), endoscopic biopsy (n = 1), or by the results of percutaneous biopsy and clinical-radiological and bacteriological modalities (n = 6). The final diagnoses showed 4 patients with isolated omental pathology and 21 with widespread peritoneal involvement. The CT-guided biopsies were performed with 1.0-1.8-mm Surecut core-needles. RESULTS: In 16 patients, the final diagnosis was metastatic adenocarcinoma--with the primary tumor sites in the ovary (n = 3), stomach (n = 1), appendix (n = 2), and unknown (n = 10). In the remaining 9 patients, the final diagnosis was hepatocellular carcinoma, lymphoma, and mesothelioma in 1 patient each; tuberculosis in 5; and actinomycosis in 1. Sufficient histological (n = 16) or cytological (n = 8) material was obtained by CT biopsy in 24/25 (96%) cases; the specimen was insufficient for diagnosis in 1 case. In differentiating benign from malignant disease, CT-guided biopsy showed a sensitivity, specificity and accuracy of respectively 89.5%, 100% and 92%. It gave a specific diagnosis in 78.9% (15/19) of patients with malignant conditions and in 50% (3/6) of patients with benign disorders. There were no biopsy-related complications. CONCLUSION: CT-guided percutaneous core-needle biopsy of the omentum is a safe, useful and highly accurate procedure for diagnosing malignant omental pathology.

Actinomycosis↗
PubMed1995

[Alveolar lipoproteinosis treated by bronchopulmonary lavage].

Alveolar lipoproteinosis is a rare disease, a review of the Spanish Medical Index for 1971 to June 1994 showing only 9 reported cases. The intra-alveolar deposit of lipoprotein-type matter produces severe hypoxemia and favors infection by opportunistic germs. Treatment with massive bronchial lavage (MBL) removes the matter from the alveolar space, improves gas exchange and decreases the risk of infection. We report a case of primary alveolar lipoproteinosis treated with MBL in which the patient developed infections by Aspergillus fumigatus before lavage and after starting steroid treatment. The procedure was performed without complications, with significant clinical and gasometric improvement. The natural evolution of this disease is poorly understood. Spontaneous remissions have been observed, and as MBL is not a risk-free procedures, its use in treatment is controversial. We believe that when severe hypoxemia is present, MBL should be used early, when the risk is slight; MBL improves gas exchange and probably reduces the risk of opportunistic infection.

Adult↗
PubMed1995

Tuberculosis of the nasal fossa manifested by a polypoid mass.

Since the introduction of effective antituberculous chemotherapy, upper respiratory tract tuberculosis is infrequent; nasal involvement is a very rare form of this disease. In this localization, tuberculosis is usually unilateral and typically discloses a definite granular mass or an ulcer. We report a case manifested by an intranasal mass on computerized tomography scans that evolved as chronic rhinitis.

Aged↗