Journal of Pathology and Translational Medicine

Case Reports

Emphysematous Pyelonephritis in Diabetic Nephropathy A report of two cases.: Jae Ho Han, Lucia Kim, Sung Eun Kim, Soon Won Hong, Hyeon Joo Jeong; Korean J Pathol. 1999;33(5):367-370.

Abstract PDF: Diabetic nephropathy is characterized by one or a combination of the following lesions: (1) glomerular involvement with three distinctive patterns: diffuse glomerulosclerosis, nodular glomerulosclerosis, and exudative lesions; (2) arteriolo sclerosis; (3) urinary tract bacterial infection with pyelonephritis and sometimes emphysematous pyelonephritis. Emphysematous pyelonephritis is an uncommon life-threatening and acute suppurative infection of the kidney, and usually occurs in diabetic female patients. It is characterized by the production of intraparenchymal gas. Glucose fermentation has been considered the main cause of the gas formation. We presented two illustrative nephrectomy cases of emphysematous pyelonephritis in addition to the typical pathologic features of diabetic nephropathy.

Placental Transmogrification of the Lung: A Brief Case Report.: Eun Su Park, Joungho Han, Won Jung Koh, Kyung Soo Lee, Jhingook Kim, Jinwon Seo, Jiyoung Kim; Korean J Pathol. 2008;42(5):308-310.

Abstract PDF: Placental transmogrification (PT) is an unusual condition in which the alveoli develop a peculiar villous configuration that resembles the placental villi. We report a rare case of pulmonary PT in a 46-year-old man who presented with multiple cystic lesions and nodules on radiography. The patient was treated with a surgical excision. The cut surface of the lung lesion had a villous spongiform manifestation with a partly yellow granular appearance. Microscopically, multiple papillary cores mimicking the villous structures of the placenta were observed within the bullous airspaces. These papillary cores contained many vascular structures, lymphoid aggregates, interstitial clear cells, mature fat and dystrophic calcification. This case was solitary and not associated with other pulmonary or systemic diseases. The etiology is unknown, and further studies will be needed to understand the pathogenesis of the lesion.

Original Article

Pulmonary Lymphangioleiomyomatosis: Pathologic Analysis of Eight Korean Cases.: Seung Sook Lee, Jeong Wook Seo, Eul Keun Ham, Yong Il Kim, Nam Hee Won, Jung Gi Im, Young Soo Shim; Korean J Pathol. 1994;28(4):358-367.

Abstract PDF: Histopathology of pulmonary lymphangioleiomyomatosis(LAM) is studied using four new cases and six previously reported cases, which include two cases without definite evidence of LAM. The important diagnostic features of this lesion were nodular proliferation of immature smooth muscle and cleft or cyst formation within the nodules of smooth muscle cells. The nuclei of the smooth muscle cells were bigger than those of blood vessels or fibrotic lung, and the direction of nuclei was irregular. The lung parenchyma showed little inflammatory change but there were multiple air cysts with smooth muscle nodules at their margin. There were two cases with exuberant proliferation of smooth muscle nodules and two cases with papilliferous projections of the cells into lymphatic lumen. Whereas, three cases had only a few small slender nodules of smooth muscle cells at the margin of air cyst. The lymphatic lumen with smooth muscle nodules is dilated in four cases but other four cases show collapsed lumen. Pulmonary hemorrhage and hemosiderosis were prominent in three cases. There were variety of histology in terms of the cellularity of smooth muscle nodules, the size of the lymphatic lumen and the degree of pulmonary destruction, which may have significance on the clinical presentation and prognostication.

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