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M Taavitsainen

Publications and source records attributed to M Taavitsainen.

At least 19 recordsLinked to original sources
PubMed1992

Technetium-99m hexamethyl propylene amine oxine leucocytes in the assessment of disease activity in inflammatory bowel disease.

The inflammatory activity in 108 bowel segments of 40 patients with suspected or known inflammatory bowel disease was assessed macroscopically by endoscopy, histology and technetium-99m hexamethyl propylene amine oxine (99mTc-HMPAO) leucocytes using a numerical grading system (scores 0-3). A 4-h series of scintigrams showed a significant correlation with both histological and macroscopical assessment of disease activity (rho = 0.850, P less than 0.001 and rho = 0.773, P less than 0.001, respectively). Sensitivity, specificity and accuracy of scintigraphy in detecting active inflammatory segments were 85%, 92% and 89%, respectively. A normal scintigram did not completely exclude mild inflammatory activity, especially in the rectosigmoid area. 99mTc-HMPAO leucocytes offer an accurate and non-invasive alternative for the assessment of disease activity in ulcerative colitis and Crohn's disease.

Adult↗
PubMed1992

Technique of renal biopsy by ultrasound guided percutaneous puncture with a spring loaded "gun".

The study consisted of 89 consecutive patients (mean age = 41.5, range = 16-82, 64 men, 25 women) referred for renal biopsy because of clinical suspicion of renal parenchymal disease. Neither transplant kidneys nor tumour evaluation were included. A biopsy "gun" (Biopty) and 14 (2.0 mm) and 18 (1.2 mm) gauge needles were used with ultrasound guidance. Sixtyseven renal biopsies were guided using a freehand technique 42 using a fixed angle guide attachment. The mean glomerular yield was 9.4 glomeruli. Almost 25% of the 18 gauge needle biopsies (n = 57) had to be repeated and 29.3% of the 14 gauge needle biopsies (n = 75). The yield difference was not statistically significant (Chi-squared = 0.37, p = 0.54). There was no statistically significant difference between the distributions of failure to obtain a significant material for evaluation caused by the biopsy technique used (Chi-squared = 0.08, p = 0.78). When analysing cases of single successful pass the thinner needle produced 6.7 glomeruli (n = 36, SD = 5.08) and the thicker needle 13.8 glomeruli (n = 18, SD = 6.82). No serious complications occurred.

Adolescent↗
PubMed1992

Splenic abscess. Imaging and intervention.

We reviewed the imaging findings of 14 splenic abscesses in 13 patients. All patients underwent chest radiography, 12 ultrasonography (US), 9 CT, 4 plain abdominal radiography, 2 99mTc-HMPAO leukocyte scan and 2 99mTc-HIG scan. Three patients were treated with percutaneous catheter drainage, and 5 with diagnostic or therapeutic fine-needle aspiration (FNA). At US the abscess was hypoechoic (n = 9), anechoic (n = 2), or anechoic with gas-bubbles (n = 1), or the entire spleen was inhomogeneous with gas-bubbles (n = 1). At CT the abscesses appeared as low density (18-30 HU) lesions with (n = 2) or without (n = 7) gas. In 2 cases 99mTc-HMPAO leukocyte scan, and in one case 99mTc-HIG scan showed an intrasplenic defect, and in one case 99mTc-HIG scan was considered normal. At plain abdominal radiography extraintestinal gas was suggested in 2 patients, and the findings were normal in 2. US-guided FNA confirmed infectious etiology of the lesion in 4 patients, and a necrotic specimen suggested infection in one. One patient was cured with repeated aspirations. Catheter drainage was successful in all 3 patients who underwent the procedure. We conclude that US and CT are accurate in detecting splenic abscesses. Our results in splenic interventions advocate wider use of the procedures.

Abscess↗
PubMed1991

Scintigraphy with 99mTc-HMPAO labeled leukocytes in acute cholecystitis.

99mTc-HMPAO labeled leukocyte scanning was performed on 38 patients with clinically suspected acute cholecystitis (AC) to evaluate its diagnostic value. The typical finding was an increasing accumulation of the tracer in the gallbladder wall in a 4 hour series of scintigrams. Leukocyte scan was positive in 16 of 17 patients with surgically and histologically confirmed AC. There were no false-positive findings. The sensitivity, specificity, and accuracy of scintigraphy were 94, 100, and 96%, respectively. In 2 patients with acute acalculous cholecystitis true-positive findings were observed. Scintigraphy with 99mTc-HMPAO labeled leukocytes is a valuable new imaging method in AC.

Acute Disease↗
PubMed1991

Radiologic findings in renal oncocytoma.

The imaging findings of 36 renal oncocytomas in 32 patients were evaluated retrospectively. Twenty-two patients underwent ultrasound (US), 16 CT, 25 angiography, 19 urography, and 6 fine-needle biopsy. At US 8 of the oncocytomas were isoechoic, 7 hyperechoic, and 7 hypoechoic. The structure was homogeneous in 59% and nonhomogeneous in 41%. At plain CT 12 oncocytomas were homogeneously hypodense, 3 isodense, and one hyperdense. Contrast enhancement was homogeneous in 10 and inhomogeneous in 4 cases. A stellate scar was detected in one case, and in one case a contrast study was not performed. At angiography the oncocytomas were hypervascular in 21, hypovascular in 3 cases, and one was not detected. Nineteen of the tumors were well delineated. A spokewheel arterial pattern was detected in 3 tumors. The cytologic diagnosis was benign renal oncocytoma in 4 cases and highly suggestive of oncocytoma in 2 cases. We conclude that the homogeneity of a renal tumor at US and at CT may suggest the possibility of oncocytoma. US-guided fine-needle biopsy is a useful diagnostic tool in patients who need a precise presurgical diagnosis.

Adenoma↗
PubMed1991

Accuracy of adrenal biopsy guided by ultrasound and CT.

We reviewed the results of fine needle biopsy of the adrenal glands guided by ultrasonography or CT in 56 patients. The final diagnoses, obtained at operation, autopsy or follow-up were: metastasis (n = 22), adenoma (n = 21), adrenal cyst (n = 6), hematoma (n = 3), lymphoma (n = 1), pheochromocytoma (n = 1), lymph node (n = 1), and amyloid mass (n = 1). Sufficient cytologic material was obtained in 96.4% (54/56). The overall accuracy to differentiate benign from malignant disease was 85.7% (48/56), 2 were false-negative, one was false-positive. The biopsy was inconclusive ("possibly malignant") in 3 patients, 2 of whom had an additional cutting needle biopsy yielding a correct positive finding. No complications occurred. We conclude that in disseminated malignant disease with suspected adrenal metastases diagnostic results can be obtained with guided fine needle biopsy. Biopsy in primary adrenal lesions is helpful, especially if the aspirate of the lesion turns out to be composed of something other than adrenal cells.

Adrenal Gland Neoplasms↗
PubMed1991

Ultrasound guidance for pericardiocentesis.

Sonographic guidance with 41 punctures and 38 catheterizations was employed in 68 patients. The approach was either intercostal or subxiphoid. Most punctures were performed with a 1.4-mm-thick plastic-sheathed cannula after local anesthesia. Complications were observed in 7 patients. In one patient a catheter introduced with a movable core-type guidewire pierced the right ventricle wall with uneventful recovery after surgery. Intercostal drainage caused pleural pain in 2 patients, and in 2, leakage to the pleural space. Two patients with heart transplants had severe bradycardia and drop of blood pressure, one after needle drainage and the other during guidewire manipulation. Direct monitoring generally ensures a correct position of the instruments and hazards to adjacent organs can be avoided. In small effusions a simple needle aspiration with a plastic-sheathed cannula is safer than catheter drainage.

Adult↗
PubMed1990

Fine-needle aspiration biopsy of liver hemangioma.

The results of 36 consecutive fine-needle aspiration biopsies of liver hemangiomas at two University Hospitals from the years 1981-1988 are described. The sizes of the lesions were 1 to 15 cm. Six patients had malignant disease, and liver metastasis was considered possible. In 2 cases the chief complaint was related to liver enlargement, and 28 patients had other abdominal symptoms. The aspiration was performed to confirm a suggested hemangioma in 18 and because of inconclusive findings at imaging in 18 cases. The aspirations were performed with sonographic guidance using 0.7 to 0.8 mm outer diameter needles. Cellular material from a hemangioma was obtained in 21 cases; only blood was aspirated in 5 cases. Hepatocytes were seen among abundant blood cells in 10, and some fibroblasts in 5 cases. One patient had significant bleeding that was treated with a transfusion of two units of blood. Nine patients were treated surgically, and histologic samples confirmed the diagnosis of hemangioma. None of the 27 non-operated patients showed progression of the liver lesion at 3 to 48 months follow-up. Fine-needle aspiration biopsy is helpful in the diagnosis of liver hemangioma. Confusion with malignancy is unlikely. Further experience will show the frequency of complications.

Adult↗
PubMed1990

Percutaneous evacuation of abdominal abscesses and fluid collections--aspiration or catheter drainage?

Ninety-three abdominal abscesses and fluid collections (pseudocysts, hematomas and bilomas) in 79 patients were treated under radiological guidance, for a total of 111 procedures (23 needle aspirations (NA) of 17 foci and 88 catheter drainages (CD) of 84 foci). In eight foci both methods were used. Catheter drainage was curative in 65% of abscesses and in 56% of pseudocysts and improved the patients' condition before surgery in another 11% or 10%, respectively. The aim of CD could not be achieved in 24% of the abscesses and in 34% of the pseudocysts. Needle aspiration showed little effect being curative in only 6% and partially beneficial in 24% as all the foci were considered. Complications occurred in 8% of CD:s and in 0% of NA:s. We suggest that radiologically guided CD of abscesses and fluid collections should be the primary therapeutic approach in all cases where this can be performed safely. The therapeutic effect of NA was poor.

Abdomen↗
PubMed1988

Delayed presentation of blunt splenic injury.

Eleven patients with delayed presentation of splenic injury after blunt abdominal trauma treated during a 10 year period have been described. They represented 24 percent of all patients treated for blunt splenic injury in our department in that time period. Ten patients required operative treatment and one was treated nonoperatively. There were no deaths. The value of computerized tomography and ultrasonography in the accurate preoperative assessment of splenic injury has been documented. In addition, the various diagnostic and therapeutic possibilities in blunt splenic trauma have been discussed.

Adolescent↗
PubMed1988

Epidermoid cyst of the testis. Case report with a review of the literature.

Epidermoid cysts of the testis are rare, benign testicular tumors. Only 188 cases have been reported in the world literature until July 1986. There is controversy in the literature regarding whether local excision or enucleation of the cyst and sparing the testicle or orchiectomy is the preferred treatment approach of these lesions. A case with epidermoid cyst of testis, diagnosed correctly by ultrasound and frozen section and treated successfully by an excisional operation, is presented.

Adult↗
PubMed1987

Xanthogranulomatous pyelonephritis in a functioning kidney. A case report.

A 34-year-old woman with xanthogranulomatous pyelonephritis mimicking a renal tumour is presented. Preoperative examinations including renal ultrasonography, computed tomography, renal angiography and fine needle biopsy could not exclude malignancy. The diseased kidney had good function and there was no history or signs of urinary tract infection or calculi. During operation a frozen section biopsy showed xanthogranulomatous pyelonephritis and a kidney-saving enucleation of the tumour was performed. The patient recovered uneventfully with good kidney function on the operated side.

Adult↗