Bulky pulmonary mucosa-associated lymphoid tissue lymphoma treated with yttrium-90 ibritumomab tiuxetan.

An 84-year-old woman was admitted to our hospital with nonproductive cough and dyspnea on exertion. Computed tomography (CT) scan revealed extensive consolidation in the right lung. She was diagnosed with pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma using CT-guided lung biopsy.

Establishment and characterization of a cell line (OMC-9) originating from a human endometrial stromal sarcoma.

Cell lines are very useful for clinical and basic research. The establishment of uterine malignant tumor cell lines with unusual histology is especially important. We describe the establishment and characterization of a new human endometrial stromal sarcoma cell line of the uterus.

Intrahepatic portosystemic venous shunt: occurrence in a child patient without liver cirrhosis.

There are multiple reports of intrahepatic portosystemic venous shunt (PSVS) cases in adult patients. We report the case of a 4-year-old child with PSVS and pulmonary arteriovenous malformation (PAVM). Abdominal sonography and computed tomography (CT) revealed the presence of PSVS.

[A case of uterine cystic adenomatoid tumor mimicking malignant ovarian tumor on MR imaging].

We report a case of adenomatoid tumor of the uterus. MR images demonstrated a cystic mass with septae attached to the posterior wall of the uterus, making it difficult to distinguish from a malignant ovarian tumor. However, normal bilateral ovaries and beak sign continuing to the uterus were detected on MR images, enabling us to distinguish the cystic mass from a malignant ovarian tumor.

Nasal-type NK/T cell lymphoma of the orbit with distant metastases.

A case of a nasal-type NK/T cell lymphoma of the orbit with distant metastases is reported. The orbital lymphoma was angiodestructive with prominent necrosis and frequent apoptosis. Lymphoma cells were positive for CD56, cytotoxic molecules (granzyme B and TIA-1), and EBV.

Ectopic thymus presenting as neck mass.

A 3-month-old girl presented with an asymptomatic soft tissue mass in the right neck. Her preoperative data were normal. CECT of the neck showed a 3-cm solid mass with homogeneous mild enhancement without mass effect.

Chordoma in the sella turcica.

A 75-year-old man presented with a rare case of chordoma in the sella turcica of the skull base. He had been treated for hypertension and chronic renal failure since 1990. Computed tomography detected a tumor in the sella turcica in 1994, but the patient had no clinical complaints and the serum pituitary hormone levels were normal.