A Rare Case of Collecting Duct Carcinoma With Extensive Coagulative Necrosis.

Collecting duct carcinoma (CDC) is an aggressive renal malignancy with limited diagnostic and therapeutic consensus. We report a case of a 69-year-old male with CDC and extensive coagulative necrosis who presented with lower extremity swelling, abdominal distention, and an enlarged left kidney causing grade IV hydronephrosis. Initial treatment with a left percutaneous nephrostomy was followed by clinical deterioration and a diagnosis of emphysematous pyelonephritis.

Ultrasound-guided fine-needle aspiration biopsy of thyroid neoplasms with lipomatous stroma: Report of two cases.

Thyroid tumors with abundant adipose tissue component are rare, reportedly accounting for 0.98-2.8% of all thyroid nodules, and include entities such as thyroid lipoadenoma and thyroid carcinoma with lipomatous stroma (TCLS).

Infarction with associated pseudosarcomatous changes mimics anaplasia in otherwise grade I meningiomas.

We describe a morphologically distinct pattern of tumor infarction and associated sarcoma-like changes, mimicking focal anaplasia, in otherwise WHO grade I meningiomas. The described cases (n = 9) all demonstrated a discrete spindle-cell (pseudosarcomatous) component with brisk mitotic activity (12-14 mitoses/10 HPF), elevated Ki-67 (mean 75.5 ± 25.

Angioleiomyoma of the Foot.

Angioleiomyomas are benign soft-tissue tumors that present painfully and are more commonly found in the extremities. Although benign soft-tissue tumors do not require excision, the clinician may not always know the type of tumor, and patient symptomatology may require removal of the offending body. In this article, we present our case findings of a 45-year-old man presenting with a subcutaneous angioleiomyoma subcalcis.

Solitary Polypoid Angiodysplastic Lesion Mimicking a Tumor in the Jejunum.

Small bowel bleeding should be considered in patients with overt or occult gastrointestinal hemorrhage after normal upper and lower endoscopic examination. Angiodysplasia appearing as multiple flat vascular tufts is the most common cause of small bowel bleeding in patients over 40 years old. Polypoid angiodysplasia, however, is extremely rare.