- Metastatic Renal Cell Carcinoma in Maxillary Sinus: A case report.
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Gyeong Yeob Gong, Chang Hun Lee, Kang Suek Suh, Sun Kyung Lee
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Korean J Pathol. 1991;25(4):392-394.
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- Metastases to the sinonasal tract are infrequent occurrences from primaries below the clavicles. The total number of reported cases to date is less than 100. There is, however, complete unanimity concerning the histologic type of metastatic neoplasm most often encountered. An interesting phenomenon, generally attributable only to breast and renal cell carcinoma, is the late recurrence of the malignant tumor, even 10 or more years after operation. A 61 year-old-male was admitted to ENT due to frequent epistaxis and right facial swelling. CT scan revealed a huge soft tissue density mass I right maxillary sinus with extension into nasopharynx and deviation of nasal septum. The histologic diagnosis was metastatic renal cell carcinoma. He had left nephrectomy because of renal cell carcinoma, 14 years ago. We report a case of metastatic renal cell carcinoma of maxillary sinus in view of rarity, and a brief review of the literature related to this type of tumor is presented.
- Merkel Cell Carcinoma: A case report associated with squamous cell carcinoma.
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Chang Hun Lee, Gyeong Yeob Gong, Kang Suek Suh, Sun Kyung Lee
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Korean J Pathol. 1991;25(2):164-171.
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- Merkel cell carcinoma is a relatively uncommon, cutaneous, neuroendocrine neoplasm that was first recognized by Toker in 1972. Occasionally it is found concurrent with squamous cell carcinoma or basal cell carcinoma and in them cases, the coexistence of them is suggesive of presenting the effect of a common carcinogenic influence on two distinct precursor cells. Now the authors report a case of Merkel cell carcinoma associated with squamous cell carcinoma arising in the overlying epidermis, and a brief review of literatures is introduced. The patient was a 75-year-old female, who had noticed a reddish brown, ulcerated mass on the right buttock. It had progressively enlarged to become lemon-size during last 4 months. The right buttock mass excised measured 10x8x3 cm and was gray white, solid, with an ill-defined marigin. Histologically the tumor was located in the dermis and was lacking in connection with the epidermis in which invasive squamous cell carcinoma developed. The neoplastic cells were arranged in a diffuse, lymphoma-like pattern or trabecular arrangement and their cytologic details were reminiscent of small cell carcinoma of the lung, On electron microscopy the cells displayed many neurosecretory granules averaging about 100nm in diameter, intermediate filaments and desmosomes. Immunohistochemically a ball-like immunostaining for keratin, resembling an inclusion body, was seen, but other markers, including neuron-specific enolase, vimentin, S-100 protein and leukocyte common antigen, were unrewarded.
- Plasma prostaglandin E2 Levels in Patients wth Gastric Carcinoma.
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Gyeong Yeob Gong, Sun Kyung Lee
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Korean J Pathol. 1990;24(4):386-392.
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- This study was performed for the purpose of evaluation of plasma PGE2, levels in patients with gastric carcinomas. To carry out this study twenty-one gastrectomy patients with gastric carcinoma were selected. Serial plasma PGE2 levels were measured before and after operation by radioimmunoassay. Plasma PGE2 was also measured in five normal healthy volunteers or of patients with gastric ulcer.
The conclusion drawn therefrom were as followed: 1) In normal healthy volunteers, plasma PGE2 level was 50.2+/-16.5 pg/ml which ws higher than that of parients with gastric ulcer, 20.7+/-15.4 pg/ml, (p<0.001). 2) In patients with diffuse type of gastric carcinoma, preoperative and postoperative plasma PGE2 levels were 25.7+/-12.1 pg/ml, and 23.1+/-8.7 pg/ml, rewpectively. In parients with intestinal type of gastric carcinoma, preoperative and postoperastive plasma PGE2 levels were 26.2+/-8.9 pg/ml and 24.1+/-11.2 pg/ml, respectively. In both types of gastric carcinoma, plasma PGE2 levels were lower than that of normal healthy volunteers and there was no significant difference compaired with the levels in patients with gastric ulcer. 3) In diffuse and intestinal types of gastric carcinoma, postoperative PGE2 levels were lower that those of preoperative state but it was not significant. 4) In early and advanced gastric carcinoma, preoperative PGE2 levels were 29.0+/-11.7 pg/ml and 24.8+/-9.9 pg/ml, respectively.
There was no significant difference by the depth of invasion. From the result as mentioned above, it is concluded that plasma PGE2 levels of patients with gastric carcinoma and it is presumable that there is a factor decreasing plasma PGE2 levels in patients with gastric carcinoma or ulcer.
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