- Mesenteric Lymphadenitis Due to Yersinia enterocolitica: A case report.
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Hyang Mi Shin, Hwa Sook Jeong, Hyun Dug Wang, Young Don Lee, Ro Hyun Sung
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Korean J Pathol. 2000;34(12):1022-1024.
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- Mesenteric lymphadenitis due to Yersinia enterocolitica infection is not common in Korea. Although most cases of Yersinia enterocolitica-induced mesenteric adenitis are self limited, cardinal features of Yersinia enterocolitica-induced mesenteric adenitis are so similar to those of acute appendicitis that some of the patients undergo laparotomy with suspected appendicitis. The findings on laparotomy in such patients are usually enlarged mesenteric nodes with a normal or slightly inflamed appendix. Because histologic examination of the removed mesenteric lymph nodes reveals reactive hyperplasia in most cases, it is usually difficult to suspect Yersinia enterocolitica infection on morphology of the resected nodes. But suppurative granulomata of mesenteric lymph nodes, uncommonly encountered in Yersinia enterocolitica infection, strongly suggest yersinial infection. We report a case of mesenteric lymphadenitis in a 10-year-old boy, who underwent laparotomy with suspected acute appendicitis. The removed lymph node showed several suppurative granulomata in the cortex, suggesting yersinial infection. Serologic study confirmed Yersinia enterocolitica serotype O:3 infection.
- Proliferative Activity of Thyroid Lesions Evaluated by Mitotic Count and Proliferating Cell Nuclear Antigen (PCNA).
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Hwa Sook Jeong, Geon Kook Lee, Hyung Geun Song, Ro hyun Sung
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Korean J Pathol. 1997;31(12):1297-1307.
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- To evaluate the clinical and histopathological significance of the proliferative activity in neoplastic and non-neoplastic thyroid lesions, we analyzed the mitotic count and the proliferating cell nuclear antigen labeling index (PCNA-LI) by immunohistochemistry as the proliferation- related markers. In this study included were surgically removed normal thyroid tissue (27 cases), adenomatous goiter (15 cases), Hashimoto's thyroiditis (5 cases), follicular adenoma (13 cases), follicular carcinoma (7 cases), papillary carcinoma (44 cases), poorly differentiated carcinoma (2 cases) and undifferentiated carcinoma (3 cases). The median PCNA-LI was 0 in normal thyroid tissue, 0.5 in adenomatous goiter, 6.2 in Hashimoto's thyroiditis, 1.2 in follicular adenoma, 4.8 in follicular carcinoma, 8.5 in papillary carcinoma, 60.8 in poorly differentiated carcinoma, and 55.2 in undifferentiated carcinoma (p=0.0001). Although PCNA-LI was exceptionally high in Hashimoto's thyroiditis, it was suggested that PCNA-LI could be used as a marker differentiating benign lesions from malignant neoplasm.
Also, it could differentiate follicular adenoma from follicular carcinoma. Except clinical stage (p=0.0397), PCNA-LI was not related with sex, size, histologic subtype, and lymph node metastasis in papillary carcinoma. The presence of mitosis differentiated the neoplastic thyroid lesions from the non-neoplastic lesions (p<0.05), however, it could not divide benign and malignant neoplasm. These results suggest that an evaluation of the proliferative activity can help to differentiate the thyroid lesions. In addition, there was no significant correlation between the value of PCNA-LI and the presence of mitosis. It can be recommended to evaluate both the mitotic count and the PCNA-LI for determining the proliferative activity of the thyroid lesions.
- Potter's Syndrome with Adult Polycystic Renal Disease: An autopsy case report.
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Hwa Sook Jeong, Beom Soo Park, Geon Kook Lee
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Korean J Pathol. 1997;31(4):361-365.
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- Potter's syndrome including bilateral renal agenesis or polycystic renal disease, bilateral pulmonary hypoplasia and characteristic face was first described in 1946. Although a great number of cases of Potter's syndrome was reported, Potter's syndrome with adult polycystic kidney disease(Potter type III) was very rarely found. In this report, we described an autopsy case of Potter's syndrome having adult polycystic kidneys disease, bilateral pulmonary hypoplasia and characteristic face in conjunction with multiple hepatic cysts, features of congenital hepatic fibrosis and a pancreatic cyst. Microscopically, all cysts were lined by cuboidal epithelial cells, showing positive for epithelial membrane antigen and cytokeratins.
- Microvessel Quantitation and Assessment of its Utility by CD34 Staining in Invasive Breast Carcinoma.
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Hwa Sook Jeong, Ro Hyun Sung
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Korean J Pathol. 1997;31(4):298-307.
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- Tumor angiogenesis, the development of new blood vessels by tumor, is a widely observed phenomenon associated with the growth of human solid tumors. To investigate how tumor angiogenesis correlates with other prognostic features i.e.
menopause status, tumor size, lymph node metastasis, mitosis, angioinvasion, estrogen receptor (ER), p53 protein expression, histologic grade and clinical stage, we counted microvessels by immunohistochemistry using antibody for CD34 antigen in 56 cases of invasive breast carcinoma (27 with and 29 without axillary lymph node metastases) and 20 cases of non-inflammatory benign breast lesion. CD34 antigen is expressed on the surface of hematopoietic progenitor cells and more sensitively expressed than factor VIII in vascular endothelial cells. Microvessel count (MVC) was performed at a single hot field of 200x magnification (0.74 mm2 per field). The results are summarized as follows; 1) The mean MVC of invasive carcinoma and benign breast lesion were 92.0+/-54.4 (range, 7-237) and 20.7+/-16.6 (range, 4-73), respectively (p<0.0001). 2) Although MVC had no correlation with all other prognostic factors i.e. menopause status, tumor size, lymph node metastasis, mitosis count, angioinvasion, ER, p53 protein expression, histologic grade, and clinical stage (p>0.05), MVC had a tendency to increase in tumors with axillary LN metastasis or without ER expression. 3) Without correlation with MVC, ER (+), angioinvasion (-) and higher histologic grade correlate to significantly higher mitosis count (p<0.0005). Also, angioinvasion correlate to a significantly higher histologic grade (p<0.05). In conclusion, angiogenesis is related to tumorigenesis, but MVC may not be related to other clinicopathologic factors.
- Endotracheal Neurilemmoma.
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Hwa Sook Jeong, Jong Myeon Hong, Yoon Woo Noh, Hyung Geun Song
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Korean J Pathol. 1997;31(1):79-82.
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- Neurilemmomas of the trachea are extremely rare. The most common site of them is the distal third of the trachea and the age of the patients at presentation varied from 6 to 78 years old. They usually have a freqeuntly very long natural history, causing symptoms only after they have attained a considerable size. We experienced a case of near-total obstruction of the trachea by an intraluminal sessile neurilemmoma. The patient was a 66-year-old man with 2-year history of progressive exertional dyspnea and had several episodes of pneumonitis associated with productive cough.
Grossly, the tumor was a well-circumscribed mass.
Microscopically, typical cellular Antoni A and myxoid Antoni B areas were revealed.
- Diffuse Leiomyomatosis of the Esophagus: A case report.
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Ok Jun Lee, Hwa Sook Jeong, Jong Myeon Hong, Ro Hyun Sung
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Korean J Pathol. 1996;30(12):1159-1162.
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- Diffuse leiomyomatosis of the esophagus is a rare condition and usually extends from the mid-esophagus to the proximal third of the stomach. Macroscopically, there is a marked diffuse thickening of the esophageal wall, with or without nodularity, predominantly affecting the circular muscle coat. Microscopically, the disorder is characterized by the loss of the normal orientation of the smooth muscle fibers of all three layers. We report a case in a 37-year-old woman which was incidentally discovered at exploratory thoracotomy.
- Fine Needle Aspiration Cytology of Metastatic Pulmonary Seminoma: A Cese Report.
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Hwa Sook Jeong, Geon Kook Lee, Wun Jae Kim, Jae Ho Earm, Hyung Geun Song
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Korean J Cytopathol. 1996;7(1):97-102.
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- Fine needle aspiration cytologyof a pulmonary mass was performed on a 51-year-old man who had a left testicular mass. Cytologic features were composed of a homogeneous population of malignant cells associated with a background of foamy and lacelike material. The cellular features were characterized by monomorphous cell proliferation of relatively regular large cells, generally isolated or grouped. Occasionally, fine branching stroma with large tumor cells and scanty lymphocytes were noted. The tumor cells had a round, regular nucleus, prominent round nucleoli, and a thin rim of cytoplasm containing large vacuoles or lacunae filled with glycogen. The fine needle aspiration cytologic diagnosis was highly consistent with metastatic seminoma from testis and less likely primary or other metastatic carcinoma. The diagnosis of resected testicular mass was classic seminoma. Despite the fact that cytopathologists were not familiar with diagnosis of seminoma due to clinician's lack of interest in fine needle aspiration cytology of germ cell tumors including seminoma, it appears that a diagnosis of this tumor should not be problematic in cytologic material if specific histologic criteria are applied.
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