Uncommon synchronous association between ovarian carcinoma and gastrointestinal stromal tumor: a case study and literature review.

Background: The association of gastrointestinal stromal tumors (GIST) and other cancers is well known, but its synchronous occurrence with gynecological malignancies is very uncommon. Usually, the diagnosis is accidentally established. We describe a patient with GIST and concurrent ovarian cancer and discuss the clinical implications of this finding.

Immunohistochemical evaluation of endometriotic lesions and disseminated endometriosis-like cells in incidental lymph nodes of patients with endometriosis.

Objective: To investigate the frequency of endometriotic lesions and disseminated endometriotic-like cells in a series of incidentally removed lymph nodes (LNs) in patients with endometriosis.

Design: Retrospective study.

Setting: University hospital endometriosis center.

Bronchial atresia is common to extralobar sequestration, intralobar sequestration, congenital cystic adenomatoid malformation, and lobar emphysema.

Congenital cystic adenomatoid malformation (CCAM), intralobar sequestration (ILS), extralobar sequestration (ELS), and lobar emphysema (LE) are well-accepted entities; however, certain findings are common to all, particularly the parenchymal maldevelopment characterizing CCAM. Isolated reports have described bronchial atresia (BA) in some specimens in all 4 entities, but this finding has not been evaluated in a prospective manner. With the aid of a dissecting microscope, we prospectively examined 47 lung specimens resected during the past 4 years and submitted with the clinical impression of ELS (n=11), ILS (n=11), CCAM (n=20), LE (n=4), and airway-esophageal communication (n=1).

Pulmonary vein stenosis: expression of receptor tyrosine kinases by lesional cells.

Background: Primary pulmonary vein stenosis (PVS) is a progressive disorder of infants. Although catheter based intervention and chemotherapy are used to manage the disorder, the benefit of these approaches is reduced considerably by restenosis. The nature of the intimal cells causing the occlusive lesions in PVS is poorly understood.

Solid extratesticular masses in children: radiographic and pathologic correlation.

Objective: The purpose of this pictorial essay is to review the sonographic and pathologic appearances of the most common solid and complex extratesticular masses in children.

Conclusion: Solid or complex extratesticular masses, especially those that are rapidly growing and are painless, raise concerns regarding malignant rhabdomyosarcoma. Mimickers of rhabdomyosarcoma include inflammatory processes such as pseudotumor, chronic epididymitis, or meconium periorchitis.

Myogenic markers in the evaluation of embryonal botryoid rhabdomyosarcoma of the female genital tract.

Rhabdomyosarcoma presents special diagnostic problems when it involves the uterine cervix in young children because tumor cells may lack marked atypia and may blend with the normal, immature, condensed, cellular stroma, rendering diagnosis difficult. Myogenic makers are a valuable ancillary technique for establishing a diagnosis of rhabdomyosarcoma. However, desmin positivity has been reported in cervical stromal cells, which can confound diagnosis.

Myogenic markers in the evaluation of embryonal botryoid rhabdomyosarcoma of the female genital tract.

Rhabdomyosarcoma presents special diagnostic problems when it involves the uterine cervix in young children because tumor cells may lack marked atypia and may blend with the normal, immature, condensed, cellular stroma, rendering diagnosis difficult. Myogenic makers are a valuable ancillary technique for establishing a diagnosis of rhabdomyosarcoma. However, desmin positivity has been reported in cervical stromal cells, which can confound diagnosis.

Tumefactive necrobiotic granulomas (nodulosis) of the pancreas in an adult with long-standing rheumatoid arthritis.

Rheumatoid nodules are well-documented clinical and pathologic lesions in patients with seropositive rheumatoid arthritis (RA). The current report documents the occurrence of rheumatoid nodulosis of the pancreas in an adult woman with a 7-year history of seropositive RA who presented with upper abdominal pain and was found to have multiple masses in the body and tail of the pancreas by imaging studies. An elevated serum pancreatic polypeptide (PP) and the development of new lesions in the pancreas prompted a subsequent distal pancreatectomy.

Primary thyroid teratomas in children: a report of 11 cases with a proposal of criteria for their diagnosis.

Cervical teratomas are uncommon neoplasms, although the commonest neck tumors in newborns and infants. Presence of associated thyroid tissue often causes speculation as to the site of origin, ie, arising from within thyroid, adjacent soft tissue with secondary involvement of thyroid, or as innate part of a cervical teratoma. Twenty-eight cases of cervical teratomas were identified over 75 years, including 11 cases containing associated thyroid tissue.

Mucoepidermoid carcinoma of the skin: a distinct entity from adenosquamous carcinoma: a case study with a review of the literature.

Mucoepidermoid carcinoma (MEC) of the skin is an exceedingly rare but distinctive neoplasm with respect to its histopathologic features. It is similar if not identical in most respects to MEC of the salivary gland, a neoplasm whose prognosis is correlated with the pathologic grade. We report a case of MEC of the skin in a 79-year-old white woman who presented with an axillary mass.

Congenital bilateral renal arteriovenous malformation: an unrecognized cause of renal failure.

Congenital renal arteriovenous malformations (AVM) are very rare abnormal communications between arteries and veins. These lesions are almost always unilateral, predominantly in the right kidney, and usually asymptomatic until adulthood. We present a unique case of bilateral renal AVM in a 10-year-old white boy who developed renal failure requiring renal transplantation.