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Biomedical subjects

L E Loh

Publications and source records attributed to L E Loh.

16 recordsLinked to original sources
PubMed1994

A prospective study of ingested foreign bodies in Singapore.

OBJECTIVE: To evaluate the following: the symptoms, physical signs, investigation, and treatment of impacted foreign bodies (FBs); the dimensions of FBs according to site of impaction; and epidemiology, risk factors, and complications of FB ingestion. DESIGN: Prospective analysis of 397 patients with a history of FB ingestion. SETTING: Department of Otolaryngology, Tan Tock Seng Hospital, Singapore, a referral center with institutional practice. PATIENTS: Of the 397 patients treated between May and December 1991, ingested FBs were found in 197 patients. INTERVENTION: Foreign bodies were removed with forceps under direct or indirect vision; if this was impossible, removal was done endoscopically. RESULTS: Dysphagia, positive laryngeal rub, and drinking water tests had high sensitivity and specificity for esophageal FBs. Large and rigid FBs of various shapes tend to lodge in piriform fossae and esophagus and might cause complications if not removed early. The risk factors of FB ingestion were use of dentures and Chinese method of cooking and eating. The complication rate of impacted FBs was 5.1% and increased with the delay in seeking treatment. Flexible esophagoscope was found to be as effective as rigid esophagoscope in retrieving esophageal FBs. Lesions simulating impacted FBs were found in nine patients. In 162 patients in whom no FB was found, the symptoms resolved spontaneously within 16 days. CONCLUSION: Dysphagia, positive laryngeal rub, and drinking water tests are indicative of impacted FBs that must be removed early to prevent complications. Ability to use both rigid and flexible esophagoscopes is advantageous in FB retrieval.

Adolescent↗
PubMed1994

Hemangioma of the ethmoidal sinuses.

A report of a rare case of hemangioma of the ethmoidal sinuses with erosion of bony orbital wall and anterior cranial fossa. An outline of the management is presented.

Adult↗
PubMed1993

The use of fine needle aspiration biopsy in patients with multiple lymphadenopathy before open biopsy.

When a clinician is faced with a patient who presents with lymphadenopathy and in whom the clinical examination and routine investigations are normal, excision biopsy is usually the next step of management to obtain a tissue diagnosis. In a patient who has multiple lymphadenopathy, deciding on which node to biopsy can be difficult because some of the enlarged nodes may not reflect the true disease process. When such a lymph node is biopsied, the actual diagnosis can be delayed or even missed. Fine needle aspiration biopsy has been shown to be an effective tool in the investigation of multiple lymphadenopathy. Many, if not all, of the enlarged lymph nodes can be sampled at one sitting. If this procedure fails to provide a definitive diagnosis, the clinician should then proceed on to an open biopsy. Two cases of multiple lymphadenopathy in which open biopsies failed to reveal the true nature of the disease but subsequent fine needle aspiration biopsies did are presented and discussed.

Adult↗
PubMed1992

Sphenoid mucocele: detection and surgery by intranasal endoscopy.

Sphenoid sinus mucoceles are uncommon and difficult to diagnose clinically owing to the inaccessibility of the sphenoid sinus to clinical examination. A case of infected sphenoid mucocele in which the patient complained of chronic sore throat and in which routine intranasal endoscopy contributed significantly to the diagnosis is presented. The pathology of mucocele and endoscopic sinus surgery as the treatment for sphenoid sinus mucocele is discussed.

Adult↗
PubMed1992

Buccal carcinoma--a case comparison of two modalities of reconstruction.

Buccal carcinoma, though a rare disorder in this part of the world, is often advanced at the time of diagnosis requiring full thickness resection of the cheek resulting in a through and through full thickness defect of the cheek. Such a defect confronts Head & Neck Surgeons with problem of reconstruction. The author presents, compares and contrasts two modalities of reconstruction.

Cheek↗
PubMed1991

The anatomy of the Fossa of Rosenmuller--its possible influence on the detection of occult nasopharyngeal carcinoma.

The Fossa of Rosenmuller (FOR) is a well established site of origin of nasopharyngeal carcinoma (NPC). Detection of early NPC requires a sound knowledge of the anatomy of the FOR. The authors study the anatomy of the FOR with the aid of CT Scan and discuss the possible influence of the anatomy of the FOR on the detection of occult NPC. This paper reveals that there are cases of postnasal space which cannot be fully inspected clinically due to the peculiar anatomy of the FOR.

Adolescent↗
PubMed1989

How I do it--post mastoidectomy reconstruction.

Traditionally, there are two approaches for mastoidectomy, namely:canal wall up and canal wall down. Canal wall up approach avoids an open mastoid cavity post-operatively but harbours the disadvantage of a reported higher incidence of recurrence of disease. Canal wall down approach has a reciprocal advantage and disadvantage. This paper reveals a methods of post mastoidectomy reconstruction of the posterior canal wall using the posterior canal skin.

Cholesteatoma↗