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Biomedical subjects

G Liessi

Publications and source records attributed to G Liessi.

At least 55 records · Page 3Linked to original sources

[CT-guided percutaneous biopsy of adrenal masses. Experience of the technic in 54 neoplasm patients].

Cross-sectional CT and US imaging have allowed the visualization of adrenal glands anatomy and abnormalities. In cancer patients a unilateral or bilateral adrenal enlargement may result from metastasis because the adrenal gland is one of the most common locations for metastasis in thoracic and abdominal tumors. We report our experience in 54 patients who underwent adrenal biopsy for unilateral (44 cases) or bilateral (10 cases) masses during CT examination mostly for lung cancer studies. Twenty-nine of 54 patients (53.7%) had metastatic deposits in the enlarged parenchyma. Other lesions included various pathologic conditions such as primary malignant tumors (2 carcinomas, 2 lymphomas, and 1 pheochromoblastoma) (5.5%), pheochromocytomas (3.7%), nonfunctioning adenomas (14.8%), and simple hyperplasias (12.4%). Eight of 10 patients with bilateral enlargement were metastatic; the extant 2 had simple hyperplasia. Biopsy was useless in 5 cases (9.2%), especially in the beginning and due to poor technique. All procedures were carried out with 18 and 19 G needles and under CT guidance, after standard scanning. The posterior approach was initially used, for both right (15%) and left (7.4%) lesions, but 3 pneumothoraces occurred. At present, we prefer transhepatic approach for the right adrenal gland: this access route is, in our experience, the safest and quickest. Left adrenal masses were approached anteriorly through the left hepatic lobe; when possible, in other patients, we used an oblique posterior transrenal approach, even though macroscopic hematuria occurred in 2 patients, without sequelae. We never used trans-splenic approach, even though this access has been described in literature for pancreatic masses. Transhepatic and transrenal CT-guided biopsy for adrenal masses in cancer patients provides, in our opinion, a correct and unquestionable diagnosis of possible metastasis, also for lesions smaller than 3 cm.

Adenoma↗

[Cystic lymphangiomas of the abdomen. CT and US findings].

Cystic lymphangiomas of the abdomen are an uncommon kind of hamartoma. Their diagnosis is often difficult and calls for an accurate differential diagnosis of this disease and such lesions as cystic pancreatic neoplasms, pseudocysts, hematomas, abscesses and urinomas. Eight cases of abdominal lymphangioma are reported, in patients ranging 35 to 68 years; all lesions were uni/multilocular containing serous fluid. Lymphangiomas were located in the retroperitoneal space (3 cases), in the mesenteric bed (3 cases), close to the left lumbar ureter (1 case), and on the left colon wall (1 case); the symptoms were little characteristic, mostly due to pressure on the adjacent organs. Both CT and US were able to detect and evaluate the lesions; in particular, CT provided also with exact topography. A small lymphangioma in the left colon was revealed only by barium enema. In 2 huge retroperitoneal lymphangiomas the diagnostic evaluation was improved by the use of CT-guided fine-needle biopsy; in patients with mesenteric lesions angiography was employed, also for surgical planning. Lymphography was never performed because CT and US proved the best diagnostic procedures. All patients underwent surgery, whose results confirmed the previous diagnosis, but for the patient with para-ureteral location the surgeon thought nephrectomy necessary.

Abdominal Neoplasms↗

Retained surgical gauzes: acute and chronic CT and US findings.

Surgical sponges retained after laparotomy represent a diagnostic problem if they cannot be identified by radiopaque markers on standard radiographs. We report on 9 patients from different hospitals with an abdominal gossypiboma 7 days to 21 years after the surgical procedure. Plain radiographs may suggest the diagnosis if a textile foreign body is calcified, that is, is equipped with radiopaque marker, or when a characteristic "whirl-like" pattern is present. CT and US are necessary procedures in chronic cases, since the lesion may mimic a mass; US shows specific echogenic areas with acoustic shadow; CT usually reveals a hypodense mass with a thick peripheral rim.

Abdomen↗

[Traumatic hematomas of the adrenal glands: CT and US findings in 3 cases].

Traumatic hematomas of the adrenal gland are but little known; they are but seldom discussed in literature, and can be demonstrated only by US and CT due to their small size. These lesions are mostly located on the right side, probably following a direct trauma of the adrenal parenchyma against vertebral bodies, or as a result of the rupture of medullary sinusoids for a sharp rise in pressure into the inferior vena cava, during trauma. Bilateral traumatic hematomas can cause severe adrenal failure, and the healing is slow, without calcifications, and takes several months. Three new cases are reported, unilateral on the right adrenal bed. In 2 patients CT demonstrated a slight parenchymal enlargement after thoraco-abdominal traumas; the patients were young and healthy, and the lesions completely disappeared in some years. US detected a third hematoma in a young woman with suspected metastasis from ovarian carcinoma: CT confirmed the parenchymal swelling, and a percutaneous transhepatic biopsy clarified the diagnosis. Adrenal hematomas are to be reported in order to avoid confusing them with neoplastic lesions, even though only percutaneous biopsy allows a quick and reliable diagnosis.

Adrenal Gland Diseases↗

[Role of computerized tomography and ultrasonic diagnosis in adrenal neoplasms with an adipose matrix].

Ten cases of adrenal lipomatous tumors discovered incidentally with ultrasounds (US) and computed tomography (CT) during examinations for the staging of malignant tumors are reported. Transparietal bioptic approach and surgery revealed three histologic diagnosis: non-functioning adenomas, lipomas and myelolipomas. Those findings confirmed that adrenal tumours with low density are mainly benign; but in neoplastic patients biopsy and surgery are still mandatory.

Adrenal Gland Neoplasms↗

[Critical considerations on the "innominate grooves" of the colon (author's transl)].

The authors discuss the meaning of the "innominate grooves" of the colon after having determined their anatomic substratum with a microradiographic study. In the iconographic and methodological critical evaluation of the double contrast technique the "innominate grooves" must be considered as an important sign of today's radiologic semeiotics and as elementary mucous structures which are first affected by pathologic situations.

Castor Oil↗

[Microangiographic examination of the normal and diseased gall bladder (author's transl)].

Microangiographic and anatomical examination of 30 surgically removed gall bladders is reported. The findings in normal subjects and in some forms of chronic disease (lithiatic, atrophic, hypertrophic and porcelain cholecystopathy) are described, illustrated and discussed with reference to signs that aid in the interpretation of angiographic pictures in vivo.

Angiography↗

[Thanatophoric dwarfism (author's transl)].

Two cases of thanatophoric dwarfism, one associated with cloverleaf skull diagnosed in the uterus and complete with histological findings are reported. Differential diagnosis with respect to similar forms of dwarfism and the genetic problem are discussed.

Diagnosis, Differential↗