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Biomedical subjects

J H Lynch

Publications and source records attributed to J H Lynch.

47 records · Page 3Linked to original sources

Adrenal metastases by renal cell carcinoma. Incidence at nephrectomy.

Recently, there have been questions raised as to the results and feasibility of performing renal-sparing procedures for localized renal cell carcinoma. We reviewed the records of 72 patients treated with standard radical nephrectomy to determine the incidence of adrenal involvement and to determine if adrenal lesions were detectable by radiographic methods preoperatively. Four patients had evidence of adrenal involvement for an overall incidence of 5.5 per cent. All had upper pole lesions. Adrenal involvement in each case was apparent at surgery or on preoperative imaging studies. For patients with middle and lower pole localized renal cell carcinoma who have normal findings on preoperative computerized tomography scans, modified radical nephrectomy sparing the adrenal gland may be a surgical alternative to radical nephrectomy.

Adrenal Gland Neoplasms↗

Thrombosis of the inferior vena cava by seminoma.

We report a case of metastatic seminoma that caused thrombosis and obstruction of the inferior vena cava. The pathogenesis of this rare clinical entity is discussed. The diagnostic studies for detection of vena caval thrombosis and clinical management strategies are reviewed.

Adult↗

Invasion of the inferior vena cava by testicular seminoma: demonstration by computed tomography and venography.

Involvement of the inferior vena cava (IVC) by testicular neoplasms is unusual and often clinically unsuspected. We present a patient with testicular seminoma that involved the IVC secondarily and caused multiple pulmonary emboli requiring the placement of a caval filter. The radiographic features of this phenomenon are presented with special emphasis on the computed tomographic (CT) appearance of caval thrombosis and pulmonary embolus. The characteristically low density lymphadenopathy of seminoma may obscure the diagnosis of caval thrombosis on CT. Although the findings are nonspecific, tumor invasion of the IVC should be suspected in all patients with testicular neoplasms who demonstrate caval thrombosis radiographically.

Adult↗

Controversies in the radiologic diagnosis of pelvic malignancies.

Although vast differences exist among the many pelvic malignancies, several unifying concepts emerge from this discussion. First, there is a different role for diagnostic imaging for each type of pelvic malignancy. The radiologist should be aware that although the radiographic findings may be similar, the clinical impact varies greatly with a particular tumor. Second, although clinical staging is notoriously inaccurate, nevertheless diagnostic imaging techniques only improve upon but do not replace it because of false-positive and false-negative results. Third, because of the high false-negative rates of most of the modalities in use, negative studies do not in fact rule out the presence of disease. A surgical procedure may still be needed. Finally, several new techniques, including MRI and transrectal or transurethral ultrasound, may improve the accuracy rates. These developments will probably further enliven the controversies surrounding the radiologic evaluation of pelvic malignancies.

Female↗

Case report: complete response of metastatic transitional cell carcinoma of the bladder with chemotherapy alone.

Transitional cell carcinoma of the bladder has remained to date basically a surgical disease with the addition of preoperative radiation therapy to increase survival. Chemotherapy for bladder cancer is administered either in an adjuvant setting or in patients with metastatic disease, most of whom have been treated already with cystectomy and/or radiation. We report a complete response at 54 months in a patient with clinical stage D2 and pathologic stage D1 carcinoma using cisplatin, doxorubicin and cyclophosphamide. The patient was treated with urinary diversion and chemotherapy alone, and no attempt was made to remove the primary lesion.

Adenocarcinoma↗

Malacoplakia of the bladder: a case report of resolution with bethanechol, trimethoprim-sulfamethoxazole and ascorbic acid.

Malacoplakia is a granulomatous disease that most frequently involves the urinary tract but also may involve the genital tract, gastrointestinal tract and retroperitoneum. It is believed to be infectious in origin, secondary to a deficiency of intracellular lysosomal digestion, and heretofore considered a chronic problem. We report a case of malacoplakia of the bladder, which was treated successfully with a combination of bethanechol, trimethoprim-sulfamethoxazole and ascorbic acid.

Anti-Infective Agents, Urinary↗

Computed tomography of adrenal abscess.

We present a patient with a progressively enlarging adrenal mass detected by CT which extended to the renal hilum and inferior vena cava. Pathologic evaluation revealed an adrenal abscess containing purulent debris.

Abscess↗