Biomedical subjects

Tae Woong Noh

Publications and source records attributed to Tae Woong Noh.

4 recordsLinked to original sources

PubMed2003

Steatocystoma multiplex: mammographic and sonographic manifestations.

OBJECTIVE: This study was performed to identify the typical imaging features of steatocystoma multiplex on mammography and sonography. CONCLUSION: Steatocystoma multiplex is manifest by multiple clinically palpable skin-colored or yellow nodules scattered on the axillae and the anterior chest wall. Steatocystoma multiplex is included in the differential diagnoses of lipoma, fat necrosis, galactocele, epidermal cyst, and so on, so radiologists need to be aware of its distinguishing features. The findings of a well-circumscribed round fat-density nodule on mammography or an intradermal hypoechoic nodule on sonography, combined with a family history of steatocystoma multiplex (40%) and an extensive bilateral spatial distribution of nodules, confirm the diagnosis of steatocystoma multiplex.

Adult↗

PubMed2002

Sclerosing lobular hyperplasia: sonographic pathologic correlation.

The objective was to evaluate the sonographic findings of sclerosing lobular hyperplasia (SLH) of the breast and to correlate the sonographic findings and the pathologic features. This study consisted of 9 patients with pathologically proven sclerosing lobular hyperplasia who had undergone a preoperative imaging study. We retrospectively reviewed 9 ultrasonograms and 6 mammograms. In each patient mammographic findings including, shape and margin, and ultrasonographic findings including the size, length-to-anteroposterior ratio, shape, margin, internal echo pattern, and the presence and location of internal echogenic septum, were evaluated. Histopathologic correlations focused on characteristic imaging findings. Of the 6 mammograms, 4 cases showed a lobular (3 of 6) or an oval shaped mass (1 of 6) with a partly obscured margin (4 of 6). The remaining 2 cases showed heterogeneously dense breast without visible mass. Ultrasonograms showed a lobular (5 of 9) or an oval (4 of 9) shaped mass with a circumscribed margin (9 of 9). The mean length/anteroposterior ratio was 1.98. Intratumoral echogenic septum was present in 8 cases. Six cases had a peripherally arising septum. Histopathologic review revealed that this septum was correlated to interlobular sclerosis. A peripherally arising intratumoral echogenic septum on ultrasonography seen in SLH might be explained by the interlobular sclerosis.

Adult↗

PubMed2002

Mucinous versus nonmucinous gastric carcinoma: differentiation with helical CT.

PURPOSE: To assess the capability of helical computed tomography (CT) to assist in the differentiation between mucinous and nonmucinous gastric carcinomas, with a focus on the thickened stomach wall itself. MATERIALS AND METHODS: In 62 patients with pathologically proved mucinous (n = 21) or nonmucinous (n = 41) gastric carcinomas, contrast material-enhanced helical CT images were obtained. The gross appearance, contrast enhancement pattern, predominant thickened layer, and degree of enhancement were retrospectively evaluated. Statistical analyses were performed with Fisher exact, chi(2), and Student t tests. A P value of less than.05 was considered to indicate a statistically significant difference. RESULTS: The most common type of gross appearance in both carcinomas was fungating: It occurred in 71% of patients with mucinous carcinomas and in 59% of patients with nonmucinous carcinomas. The next most common gross appearance type was ulcerative (24% of patients) in nonmucinous carcinomas and diffusely infiltrative (29% of patients) in mucinous carcinomas (P =.009). The most common contrast enhancement pattern was homogeneous (61% of patients) in nonmucinous carcinomas and layered (62% of patients) in mucinous carcinomas (P =.001). These findings were significantly different. The predominantly affected thickened layer was the high-attenuating inner layer or the entire layer (88% of patients) in nonmucinous carcinomas and the low-attenuating middle or outer layer (57% of patients) in mucinous carcinomas. Only two mucinous tumors showed miliary punctate calcifications in infiltrative lesions. CONCLUSION: Helical CT may assist in distinguishing mucinous from nonmucinous gastric carcinoma, primarily on the basis of enhancement pattern, predominant layer of the thickened wall, gross appearance, and presence of calcifications.

Adenocarcinoma, Mucinous↗

PubMed2002

Clinicopathologic review of pulmonary silicone embolism with special emphasis on the resultant histologic diversity in the lung--a review of five cases.

It is known that the subcutaneous injection of silicone can lead to severe pulmonary complications, followed in some patients by respiratory failure. Currently, silicone is being increasingly applied in the field of plastic surgery and, unfortunately, the illicit injection of silicone fluid by uncertified practitioners is not uncommon in Korea. We offer a critical pathologic review of 5 cases of pulmonary silicone embolism following illegal injection to the vaginal wall, four of which were fatal and came to legal autopsy. Our findings again confirm that subcutaneously injected silicone can gain access to the pulmonary vascular tree and cause pulmonary embolism. The histologic changes observed in the lung are variable and include four patterns i.e., the mere presence of silicone emboli, congestion and hemorrhage, acute pneumonitis, and diffuse alveolar damage despite the severe critical course in all cases. We were unable to find any histologic pattern that correlates well with the clinical course. Apart from producing emboli in the pulmonary vessels, subcutaneous injection of silicone can obviously cause serious pulmonary disease due to its ability to induce acute to induce acute pneumonitis and even possibly acute respiratory distress syndrome.

Adult↗