We reviewed 954 primary nonurothelial epithelial renal neoplasms with primary resection at Memorial Sloan-Kettering Cancer Center between the years 1980 and 1995 and classified 70 cases (7%) as renal oncocytomas. The study population was composed of 39 men and 31 women, and the mean age was 65 years (range 25 to 86 years). Fifty-six patients (80%) were asymptomatic at presentation, six (4%) had flank pain, six (4%) presented with a mass, and two (3%) had hematuria. Sixty-one were treated with total or radical nephrectomy, nine with partial nephrectomy. The right kidney was involved in 35 cases (50%), the left kidney in 32 (46%). Three cases (4%) were bilateral. Sixty-one cases (87%) were unifocal, nine (13%) multifocal. All the tumors were well circumscribed but unencapsulated. Forty-five (64%) were described as brown or red, whereas the remainder were variously described as tan to yellow. Central fibrosis or scar was described in 23 cases (33%), and gross areas of hemorrhage or cystic changes in 14 (20%). The mean size was 5.2 cm and median 5.0 cm (range 1.5 cm to 14 cm). Histologically, the tumors were characterized by a mixture of architectural patterns: compact cellular nests and acini embedded in a hyalinized, hypocellular stroma were present in 62 cases (89%), a solid nested architecture in 47 cases (67%), and a variable tubular component in 50 cases (71%). Small papillae, pseudopapillae, and intratubular epithelial tufts were seen in 19 cases (27%). Cytologically, the neoplasms also showed a mixture of cell types, the most common being the classic oncocyte, which consisted of round or polygonal cells with moderate to abundant granular, eosinophilic cytoplasm, and small round nuclei with evenly dispersed granular chromatin. Small basophilic nucleoli were visible in many of these cells in all cases. Thirty-one cases (44%) had a variable number of oncocytic cells with pyknotic nuclei and 20 (30%) contained clusters of small cells with a high nuclear/cytoplasmic ratio and dense hyperchromatic nuclei (so-called oncoblasts). Foci of tubules with clear cells embedded in a hyalinized stroma were present in six cases (9%). Cellular atypia was evident in 42 cases (60%) and was marked in 21 (30%). Eleven cases (16%) exhibited mitotic activity, albeit low. No case had atypical mitoses or necrosis. Twenty-two cases (31%) had areas of calcification within the hyalinized stroma, 12 (17%) had calcospherites, and three (4%) had osseous and myeloid metaplasia. Vascular invasion was present in three cases (4%), and invasion of perinephric fat in 14 (20%). One patient presented with liver metastasis. Fourteen cases (20%) were pT1, 42 (60%) pT2, and 14 (20%) pT3. After a mean follow-up of 58 months (range 1 to 181), 62 patients (89%) were alive with no evidence of tumor, six (9%) had died of other causes, one was alive with stable metastatic disease in the liver 58 months after diagnosis, and one died with metastatic disease to bone and liver. We conclude that renal oncocytomas have a varied morphologic appearance and their pa...
The authors report the clinicopathologic features of 14 cases of amyloid goiter (AG). Eleven patients were males and three females with ages ranging from 23 to 75 years (median, 54 years). Eight patients had secondary amyloidosis and six had primary amyloidosis. Nine cases were identified at autopsy. In symptomatic patients (n = 5), the clinical presentation included a nontender, rapidly enlarging neck mass with associated dysphagia, dyspnea or hoarseness. Clinical or laboratory evaluation failed to detect evidence of thyroid dysfunction. The histologic appearance of the thyroid predominantly consisted of diffuse amyloid deposition surrounding thyroid follicles. In two cases, a nodular pattern of amyloid deposition was seen resulting in compression and distortion of the follicular architecture. Areas of mature adipose tissue and focal lymphocytic thyroiditis with or without foreign-body type-giant cells were seen in approximately one third of the cases. Confirmation of amyloid was made by the presence of congophilia and apple-green birefringence under polarized-light microscopy. Immunohistochemical evaluation demonstrated the presence of amyloid A immunoreactivity. No Immunoreactivity was seen with calcitonin or thyroglobulin. Fine-needle aspiration may facilitate the diagnosis, as occurred in one the patients. In symptomatic patients, thyroidectomy is warranted to alleviate pressure symptoms.
Although the Ross II operation is difficult and harbors significant risk, it remains an option for patients with irreparable mitral disease who have a long life expectancy and who cannot be placed on lifelong anticoagulation.
HighlightsAdrenal incidetaloma could be mixed tumor, and should be considered in every case.Radiological signs play an important rules in differentiate malignant from benign adrenal tumor.Complete immunohistochemical study is necessary to confirm pheochromocytoma that presents normally in the clinic.Additional reported cases and clinical trials are needed to put more effective treatment plans for Mixed corticomedullary adrenal carcinoma.
Hodgkin Lymphoma (HL) is a systemic disease with involvement of the cervical, supraclavicular, and mediastinal lymph nodes. It is commonly diagnosed in patients within the second and third decades of their lives. Diagnosis is usually made based on the distinct morphological and immunohistochemical characteristics, with the tissue biopsy being the cornerstone of workup. Extranodal presentation of HL is unusual and seldom encountered. Primary HL of the central nervous system (CNS) is exceedingly rare. We herein report a case of a 38-year-old male patient who was diagnosed with primary CNS-HL. The patient was treated with complete surgical resection followed by radiotherapy and chemotherapy. The patient was disease-free for 7 years postoperatively without any clinical evidence of relapse. We also discussed a possible role of CNS regulatory T-cells (Tregs) in developmental primary CNS-HL.
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