Presentation of two cases of nasal type NK/T-cell lymphoma.

Nasal type NK/T-cell lymphoma is a rare type of predominantly extranodal non-Hodgkin lymphoma. Early and correct diagnosis with prompt treatment of NK/T-cell lymphoma is important in view of its potentially aggressive behavior and poor response to treatment with additional sites of tumor developing sometimes weeks or months after initial diagnosis. Unfortunately diagnosis of NK/T-cell lymphomas often proves difficult. The diagnosis is essentially based on the clinical presentation of extranodal ulcerative lesions in the upper aero-digestive tract and histopathologic analysis of biopsies using immunohistochemistry. Here we present two cases with nasal-type NK/T-cell lymphoma that illustrate that definitive diagnosis is often delayed due to the atypical initial presentation. We will discuss the pitfalls in diagnosing this rare type of neoplasm and review the treatment options.

[Loss of cranial-nerve function caused by early syphilitic meningitis: the comeback of a pre-war syndrome]. / Hersenzenuwuitval door vroege syfilitische meningitis: terugkeer van een vooroorlogs ziektebeeld.

Two men aged 39 and 38 who had had unprotected insertive and receptive anal sexual contact with men are presented: one had paralysis of the right half of his face and the other man had erythematous macules on the palms of his hands and the soles of his feet as well as partial alopecia, earache and progressive loss of hearing in his left ear. The latter one was also HIV-seropositive and on antiretroviral medication. Syphilitic meningitis was diagnosed in both men. The 2 patients recovered after being treated with intravenous benzyl penicillin. Syphilitic meningitis is a complication seen during the early stages of a syphilis infection. Since the introduction of penicillin it has become a rare disease. Early diagnosis is of importance since syphilitic meningitis has irreversible sequelae.

A space-occupying lesion of the skull base, masked by nasopharyngeal lymphatic tissue hypertrophy and causing cranial nerve dysfunction in an HIV-infected patient.

Patients infected with HIV are at increased risk of developing lymphoma. The lymphomas often involve extranodal sites and +/-90% are of B-cell phenotype. We describe an HIV-infected patient with unilateral multiple cranial nerve dysfunction, most likely as a result of a nasopharyngeal B-cell non-Hodgkin's lymphoma in which early histologic confirmation of the diagnosis was delayed by the simultaneous presence of nasopharyngeal lymphatic tissue hypertrophy. It is of practical importance to recognize non-Hodgkin's lymphoma as a cause of cranial nerve dysfunction and to be aware of the possibility and the implications of the simultaneous presence of nasopharyngeal lymphatic tissue hypertrophy in HIV-infected patients.

Late effects of radiotherapy on hearing.

The effect of radiotherapy on hearing was studied in 30 patients who were treated by surgery and radiotherapy for a parotid neoplasm. Functions of the irradiated ear were compared with those of the non-irradiated ear in the same patient. Tympanometry showed a small but significant reduction of static compliance on the irradiated side when compared with the non-irradiated side. Audiometry showed a significant increase in hearing loss in the 1-2, 4-8 and 10-20 kHz ranges that increased with frequency. This hearing loss was mainly sensorineural in contrast to hearing loss at 250-500 Hz, where it was more of a conductive type. There appeared to be a significant dose-effect relation in sound perception at 4-8 kHz. Doses to the cochlea of less than 55 Gy seldom caused a hearing loss, in contrast to doses exceeding 65 Gy. Overall, radiotherapy was found to cause significant, mainly sensorineural hearing losses, which were partly dose-dependent.