Assessment of the biological potential of smooth muscle tumors can be difficult and depends primarily on tumor site, stage, and histologic parameters. In this study, we examined the clinicopathologic and immunohistochemical features of 55 noncutaneous inguinal smooth muscle tumors of women (age range, 20 to 82 y; median, 57 y). Histologically, 23 tumors were considered as leiomyomas. They showed low mitotic activity (range, 0 to 6 mitoses/10 high-power fields, without atypical mitotic figures), minimal cytologic atypia, and absence of coagulative necrosis. Fifteen of these tumors histologically resembled conventional uterine leiomyomas and 8 resembled their variants: lipoleiomyomas (n = 2) and epithelioid variants (n = 6). The mean size was 7.8 cm, and half of the tumors with specified location arose in association with the round ligament. Immunohistochemical expression of estrogen receptor (ER) and/or Wilms tumor protein (WT1) was detected in most cases (83%), supporting Müllerian derivation. Follow-up data (range, 10 to 29 y; median, 13 y) on 11 patients showed that all were alive without disease or death from unrelated causes. The second group, classified as leiomyosarcomas, consisted of 32 mitotically active smooth muscle tumors, almost invariably with atypical mitotic figures, and exhibiting significant cytologic atypia. These patients were older than those with leiomyomas, and their tumors were mostly subcutaneous with a mean tumor size of 5.4 cm. Two leiomyosarcomas showed a femoral vein origin, but none were associated with the round ligament. All but 3 leiomyosarcomas were negative for ER. Follow-up data on 13 patients (range, 2 mo to 30 y; median, 4.5 y) showed that 5 died of metastatic sarcoma. Six individuals were alive without disease (median, 16 y), and 2 died of unrelated causes. In conclusion, inguinal smooth muscle tumors in women are a dichotomous group. They consist of ER/WT1-positive Müllerian-type leiomyomas resembling uterine leiomyomas with an excellent prognosis and conventional LMSs that are usually ER/WT1-negative and show a variable malignant course. Separation of these 2 categories is important for prognostication and optimal patient management, and is aided by immunohistochemical studies for ER and WT1.
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http://dx.doi.org/10.1097/PAS.0b013e318208e361 | DOI Listing |
Head Neck Pathol
January 2025
Department of medical oncology, Habib Bourguiba Hospital, University of Sfax, Sfax, 3029, Tunisia.
Leiomyosarcoma (LMS) is a malignant mesenchymal neoplasm showing smooth muscle differentiation. Primary LMS of the thyroid gland is quite rare, accounting for only 0.014% of cases.
View Article and Find Full Text PDFOpen Life Sci
January 2025
Department of Pediatrics, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, No. 134 Dong Street, Fuzhou, Fujian, 350001, China.
Functional dyspepsia (FD) is a chronic disease that occurs in the gastroduodenal region and significantly impacts human health. Maslinic acid (MA), a pentacyclic triterpene acid, is the primary bioactive ingredient in Chinese medicinal herbs such as hawthorn, which exhibits beneficial impacts on the regulation of various disease progressions. However, the specific functions and associated pathways of MA in FD progression remain unclear and require further investigation.
View Article and Find Full Text PDFCommun Biol
January 2025
Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Key Laboratory of Forensic Medicine, Hebei Medical University, Shijiazhuang, 050017, China.
Aberrant autophagy in vascular smooth muscle cells (VSMCs) is associated with the progression of vascular remodeling diseases caused by neointimal hyperplasia. Platelet-derived growth factor-BB (PDGF-BB)-induced vascular remodeling is accompanied by autophagy activation, however, the involvement of circular RNAs (circRNAs) remains unclear. Here, we show the role of PDGF-BB-regulated hsa_circ_0001304 (circ-1304) in neointimal hyperplasia and its potential involvement in VSMC autophagy, while also elucidating the potential mechanisms.
View Article and Find Full Text PDFSci Rep
January 2025
General Hospital of Xinjiang Military Command, 359 North Friendship Road, Sayibak, Ürümqi, 830000, Xinjiang, China.
The inflammatory response of lung tissue and abnormal proliferation of pulmonary artery smooth muscle cells are involved in the pathogenesis of high-altitude pulmonary hypertension (HAPH). Halofuginone (HF), an active ingredient derivative of Chang Shan (Dichroa febrifuga Lour. [Hydrangeaceae]), has antiproliferative, antihypertrophic, antifibrotic, and other effects, but its protective effects on HAPH remains unclear.
View Article and Find Full Text PDFBMJ Open
January 2025
Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
Objective: The presence of the microcystic elongated and fragmented (MELF) pattern, distinguished by its microcystic, elongated and fragmented attributes, constitutes a common manifestation of myometrial invasion (MI) within endometrial carcinoma. However, the prognostic significance of this pattern has not been definitively established. Consequently, this research aimed to clarify the prognostic implications of the MELF pattern for individuals diagnosed with endometrial carcinoma.
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