- Bile Ductular Proliferation in the Gastric Wall after Gastric Ulcer Penetration into the Liver.
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Eun Jung Cha
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Korean J Pathol. 2011;45(4):434-436.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.4.434
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- Liver penetration is one of the most serious complications of peptic ulcer diseases but is rarely encountered. A 57-year-old man was admitted to our hospital for further evaluation of a gastric malignancy. One month before admission, he was diagnosed with an adenocarcinoma by endoscopic biopsy at other hospital. A subtotal gastrectomy was performed to confirm malignancy and relieve the epigastric pain. Histologically, single glands were located between the ulcer base and attached liver tissue and stained positively for cytokeratin 19. The pathologic diagnosis was a gastric ulcer and bile ductular proliferation in the liver and gastric wall. Here, this report is the first Korean case of liver penetration of a gastric ulcer.
- Mature Teratoma in the Adrenal Gland.
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Eun Jung Cha
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Korean J Pathol. 2011;45:S98-S100.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S98
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- A teratoma is a germ-cell tumor composed of tissue components representing derivatives of three germ layers. A teratoma in the region of adrenal gland is a rare retroperitoneal tumor. We now report a case of a primary adrenal teratoma. A 38-year-old woman presented with an incidentally detected adrenal mass. The computed tomography scan revealed a 9x8x7.5 cm fat density mass with calcification in the left adrenal gland. The surgically resected tumor was round and well circumscribed and the adrenal gland was present at the periphery of the tumor. The cut surface contained fat tissue and a hair containing cyst.
Microscopically, the tumor consisted of adipose tissue, hair, skin appendage, nerve, muscle bundle and bone.
- Actinomycosis of the Penile Shaft Coexisting with Fibrous Pseudotumor of the Testis.
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Eun Jung Cha, Kyu Yun Jang, Ho Sung Park, Jong Kwan Park, Chang Seop Lee, Myoung Ja Chung, Woo Sung Moon, Dong Geun Lee, Myoung Jae Kang
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Korean J Pathol. 2008;42(1):50-53.
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- Here, we present an uncommon case of the penile shaft actinomycosis with coexisting fibrous pseudotumors of the testis. A 37-year-old, circumcised man presented with one penile and eight scrotal masses. The penile mass having a healed surface ulceration was located at the right side of the penile shaft. It was relatively circumscribed without a fibrous capsule. The cut surface showed a yellow-brown color with central focal necrosis. The scrotal tumors were circumscribed, whorled, white masses 0.3-2.0 cm in diameters, and were attached to the tunica vaginalis and tunica albuginea. Microscopically, the penile mass showed active inflammatory changes containing actinomyces displaying characteristic sulfur granules. Testicular masses were fibrous pseudotumors composed of bland spindle and stellate cells lying in dense collagenous stroma.
Actinomycosis of the penis has been reported to occur at the corona of the uncircumcised penis associated with pilonidal sinus. The present case was not associated with pilonidal sinus and, unusually, displayed co-existence with fibrous pseudotumors of the testis.
- Pseudometastasis in Sentinel Lymph Nodes with Cytokeratin Debris-containing Histiocytes in Breast Cancer Patient: A Case Report.
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Keum Ha Choi, Eun Jung Cha, Ha Na Choi, Woo Sung Moon
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Korean J Pathol. 2007;41(6):427-429.
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- Immunohistochemical staining for cytokeratins can detect false negative nodes in patients with breast carcinoma. We report on a patient with breast carcinoma and pseudometastasis detected by immunohistochemical staining within a negative sentinel lymph node. A 66-year-old woman underwent a simple mastectomy and sentinel lymph node biopsy. Immunohistochemical staining of the sentinel nodes for cytokeratin in permanent sections showed cells with intense cytoplasmic staining in the subcapsular sinus. The cells were negative for epithelial membrane antigen staining, but positive for CD68. In combination with morphologic findings and immunohistochemistry, cytokeratin-positive cells were confirmed as histiocytes with phagocytized cytokeratin debris. Careful correlation with histology and additional IHC could help avoid a misinterpretation of this type of pseudometastasis.
- PPARgamma Ligand-Induced Decrease of in vivo Tumor Growth Accompanied by Increased Cytolytic Activity of Splenocytes.
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Kyu Yun Jang, Ki Hoon Yu, Hak Yong Lee, Kyung Ryoul Kim, Ha Na Choi, Eun Jung Cha, Ho Sung Park, Woo Sung Moon, Myoung Jae Kang, Dong Geun Lee
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Korean J Pathol. 2007;41(1):7-14.
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- BACKGROUND
Recent studies have proposed the use of peroxisome proliferator activated receptor-gamma (PPARgamma) ligands as new chemotherapeutic agents for human malignant tumors. However the in vivo mechanism of PPARgamma ligands on cellular toxicity is not clear. Therefore we examined the anti-tumor effects of the PPARgamma ligand, rosiglitazone (ROS), in animal models.
METHODS
To evaluate the effect of RSO on splenocytes, an in vitro and in vivo study was performed. Cytolytic activity was measured by use of a 51Cr release assay. The splenic natural killer (NK) cell population and effector-target conjugation were measured by flow cytometric analysis.
RESULTS
In 9L glioma bearing rats, 30 mg/kg/d of ROS treatment induced a significant decrease of subcutaneous tumor growth accompanied by an increased cytolytic activity of splenocytes and of the splenic NKR-P1bright/CD3- NK cell population. In normal rats, systemic administration of ROS also increased the cytolytic activity of splenocytes, the splenic NK cell population, and effector-target conjugation.
Moreover, we found that a concentration of 20micrometer ROS caused an increase in the cytolytic activity of splenocytes, and a concentration of 50micrometer ROS increased effector-target conjugation in vitro.
CONCLUSIONS
These results suggest that increased splenic cytolytic activity and NK cell population may contribute to the anti-tumor effects of PPARgamma ligands in vivo.
However, the roles of NK cells in the PPARgamma ligand-induced anti-tumor activity should be further investigated.
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